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WO2016063313A1 - Dispositif d'alimentation électrique stabilisée - Google Patents

Dispositif d'alimentation électrique stabilisée Download PDF

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Publication number
WO2016063313A1
WO2016063313A1 PCT/JP2014/005353 JP2014005353W WO2016063313A1 WO 2016063313 A1 WO2016063313 A1 WO 2016063313A1 JP 2014005353 W JP2014005353 W JP 2014005353W WO 2016063313 A1 WO2016063313 A1 WO 2016063313A1
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WO
WIPO (PCT)
Prior art keywords
relay
power supply
unit
voltage
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/005353
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English (en)
Japanese (ja)
Inventor
寺澤　章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to PCT/JP2014/005353 priority Critical patent/WO2016063313A1/fr
Publication of WO2016063313A1 publication Critical patent/WO2016063313A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/14—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
    • H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
    • H02M5/10—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using transformers
    • H02M5/12—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using transformers for conversion of voltage or current amplitude only

Definitions

  • the present invention relates to a stabilized power supply device, and more particularly, to a stabilized power supply device that adjusts and outputs an input voltage within a predetermined voltage range.
  • the power supplied from an electric power company, etc. may be unstable, the maximum value of the voltage may fluctuate greatly, or power outages may occur frequently.
  • a power transmission / distribution network supplied from an electric power company or the like to a facility is referred to as a system power supply. If the load device has a large fluctuation range of the maximum value of the input voltage from the system power supply, the load device may cause a failure or abnormal operation. Therefore, in an environment where the fluctuation range of the input voltage from the system power supply is large, a stabilized power supply apparatus that adjusts and stabilizes the voltage supplied to the load device may be used for the purpose of protecting the load device.
  • the stabilized power supply is required to have a more reliable structure, and the above-described structure of the stabilized power supply alone is not sufficient, and further improvement is required.
  • an object of the present invention is to provide a stabilized power supply device that can be more reliable.
  • the stabilized power supply device (10) of the present invention includes an input terminal portion (1), an output terminal portion (2), and a voltage adjustment portion (3).
  • the input terminal unit (1) is connected to the system power supply.
  • the output terminal unit (2) is connected to a load device.
  • the voltage adjustment unit (3) adjusts the input voltage input to the input terminal unit (1) so as to be within a predetermined voltage range, and outputs the input voltage from the output terminal unit (2).
  • the voltage adjustment unit (3) includes a transformer (3a), a relay (3b), a control unit (3c), and a state detection unit (3d).
  • the primary coil (3a1) is electrically connected to the input terminal portion (1).
  • the secondary coil (3a2) is electrically connected to the output terminal portion (2).
  • the relay (3b) is configured to change the electrical connection between the input terminal (1) or output terminal (2) and the transformer (3a).
  • the control unit (3c) has a function of monitoring the input voltage and controlling switching of the relay (3b) so that the output voltage from the output terminal unit (2) falls within the predetermined voltage range.
  • a state detection part (3d) detects the state of a relay (3b), It is characterized by the above-mentioned.
  • the stabilized power supply device of the present invention has an effect that the reliability can be further increased by including the state detection unit that detects the state of the relay.
  • FIG. 1 is a configuration diagram illustrating a stabilized power supply device of Embodiment 1.
  • FIG. FIG. 3 is a circuit diagram illustrating the stabilized power supply device according to the first embodiment.
  • 1 is a schematic diagram illustrating a stabilized power supply device according to a first embodiment.
  • FIG. 3 is a configuration diagram illustrating a main part of the stabilized power supply device according to the first embodiment.
  • FIG. 5 is a configuration diagram illustrating a stabilized power supply device according to a second embodiment.
  • FIG. 6 is a configuration diagram illustrating a stabilized power supply device according to a third embodiment.
  • FIG. 10 is a flowchart for explaining the operation of the stabilized power supply device of the third embodiment.
  • each element constituting the embodiment may be configured such that a plurality of elements are constituted by one member and the plurality of elements are shared by one member, and conversely, a plurality of functions of one member are provided. It can also be realized by sharing these members.
  • the stabilized power supply device 10 of the present embodiment includes an input terminal unit 1, an output terminal unit 2, and a voltage adjustment unit 3, as shown in FIGS.
  • the input terminal unit 1 is connected to a system power supply.
  • the output terminal unit 2 is connected to a load device.
  • the voltage adjustment unit 3 adjusts the input voltage input to the input terminal unit 1 so as to be within a predetermined voltage range and causes the output terminal unit 2 to output the input voltage.
  • the voltage adjustment unit 3 includes a transformer 3a, a relay 3b, a control unit 3c, and a state detection unit 3d.
  • the primary coil 3a1 is electrically connected to the input terminal portion 1.
  • the secondary coil 3 a 2 is electrically connected to the output terminal portion 2.
  • the relay 3b is configured to change the electrical connection between the input terminal portion 1 or the output terminal portion 2 and the transformer 3a.
  • the control unit 3c has a function of monitoring the input voltage and controlling switching of the relay 3b so that the output voltage from the output terminal unit 2 falls within the predetermined voltage range.
  • the state detection unit 3d detects the state of the relay 3b.
  • the stabilized power supply 10 according to the present embodiment is more reliable due to the structure having the state detection unit 3d that detects the state of the relay 3b that is relatively likely to cause a malfunction among the components of the stabilized power supply 10. It becomes possible to make high.
  • the stabilized power supply apparatus 10 includes a disconnect relay 4 and a notification unit 5 in addition to the input terminal unit 1, the output terminal unit 2, and the voltage adjustment unit 3.
  • the state detection unit 3d constitutes the abnormality detection unit 3d1.
  • the abnormality detection unit 3d1 is configured to detect a state of the relay 3b in which the relay 3b is not switched even when a control signal for controlling switching of the relay 3b is output from the control unit 3c to the relay 3b, as an abnormal state.
  • Stabilized power supply 10 can be configured to be plugged directly into a consumer outlet.
  • the stabilized power supply device 10 can be configured such that the voltage adjusting unit 3 can be accommodated in a rectangular box-shaped case 11.
  • the case 11 can be formed using a synthetic resin.
  • the stabilized power supply device 10 includes an output terminal portion 2 on the front surface of the case 11.
  • the output terminal portion 2 has a pin insertion hole 2aa into which a plug pin in a power plug of a load device can be inserted.
  • a power supply cord 1aa for electrically connecting the system power supply and the input terminal unit 1 is led out from the case 11.
  • the system power supply is a single-phase three-wire AC power supply.
  • the stabilized power supply 10 is provided with a light emitting device 6 a 1, a display device 6 a 2, and a sound source device 6 c on the front surface of the case 11 as the notification unit 5.
  • Examples of the load device connected to the stabilized power supply 10 include various electronic devices and electric devices such as a television, a refrigerator, and an air conditioner.
  • the stabilized power supply 10 is not limited to a configuration in which a plug provided at the tip of the power cord 1aa is directly plugged into a home outlet.
  • the stabilized power supply device 10 can be configured to be connected between the system power supply and the main breaker of the indoor distribution board.
  • the stabilized power supply 10 may be configured to be connected between the main breaker and the branch breaker.
  • the stabilized power supply apparatus 10 is not limited to a structure connected between the main breaker and the plurality of branch breakers.
  • the stabilized power supply device 10 may be configured to be connected between a branch breaker and an outlet in a customer's home.
  • the stabilized power supply 10 may be configured to be connected between the system power supply and the uninterruptible power supply.
  • the input terminal unit 1 functions as a terminal unit to which power from the system power supply is input.
  • the input terminal unit 1 includes a first input terminal 1a to which a live wire on the non-grounding electrode side is connected, a second input terminal 1b to which a neutral wire on the grounding electrode side is connected, and a grounding wire to be grounded Is connected to a third input terminal 1c.
  • the input terminal part 1 can be made into the structure of a plug provided with a pin that can be inserted into a household outlet.
  • the input terminal unit 1 may be a terminal block to which wiring connected to the system power supply can be fixed.
  • the terminal block may have a structure including a quick connection terminal.
  • the input terminal part 1 can be comprised by the terminal using metal materials, such as copper and a copper alloy.
  • the output terminal unit 2 functions as, for example, a terminal unit that supplies power to a load device in the house.
  • the output terminal unit 2 can output the power of the output voltage adjusted by the voltage adjusting unit 3 so as to be within a predetermined voltage range to the load device.
  • the output terminal portion 2 includes a first output terminal 2a to which a live wire on the non-grounding electrode side is connected, a second output terminal 2b to which a neutral wire on the grounding electrode side is connected, and a grounding wire to be grounded Is connected to the third output terminal 2c.
  • the output terminal part 2 can be made into the structure provided with the pin receptacle of the outlet socket which can insert the plug of a load apparatus.
  • the output terminal unit 2 may be a terminal block to which wiring connected to the load device can be fixed.
  • the output terminal part 2 can be comprised by the terminal using metal materials, such as copper and copper alloy.
  • the voltage adjustment unit 3 is configured to be able to adjust the voltage so that the output voltage is within a predetermined voltage range. As shown in FIG. 2, the voltage adjusting unit 3 is electrically connected to the first input terminal 1a of the input terminal unit 1 and one end of a primary coil 3a1 that serves as a primary winding of the transformer 3a. In the voltage adjusting unit 3, the second input terminal 1b of the input terminal unit 1 and the other end of the coil 3a1 on the primary side of the transformer 3a are electrically connected. The voltage adjusting unit 3 is electrically connected to one end of a secondary coil 3a2 serving as a secondary winding of the transformer 3a and the first output terminal 2a of the output terminal unit 2. In the voltage adjusting unit 3, the other end of the secondary coil 3a2 of the transformer 3a and the second output terminal 2b of the output terminal unit 2 are electrically connected.
  • the input voltage depends on the turns ratio N2 / N1 of the transformer 3a.
  • the transformer 3a can output the input voltage input to the primary side coil 3a1 from the secondary side coil 3a2 as it is.
  • the transformer 3a can step down or step up the input voltage input to the primary side coil 3a1 and output it from the secondary side coil 3a2.
  • the transformer 3a includes a plurality of taps 3t in the secondary coil 3a2. The tap 3t is connected to a lead wire provided for leading out the coil 3a2 on the secondary side of the transformer 3a in order to adjust the input voltage.
  • the tap voltage refers to an output voltage extracted from the tap 3t.
  • the transformer 3a includes a first tap 3t1, a second tap 3t2, a third tap 3t3, and a fourth tap 3t4 as taps 3t having different numbers of turns in the winding of the coil 3a2 on the secondary side. ing.
  • the first tap 3t1 is electrically connected to the second output terminal 2b and set to the reference potential.
  • the second tap 3t2 constitutes a tap 3t in which the turns ratio N2 / N1 of the transformer 3a is 4/5.
  • a tap voltage having a magnitude 4/5 of the input voltage input to the primary coil 3a1 of the transformer 3a is generated.
  • the third tap 3t3 constitutes a tap 3t in which the turns ratio N2 / N1 of the transformer 3a is 1.
  • a tap voltage having the same magnitude as the input voltage input to the primary coil 3a1 of the transformer 3a is generated between the first tap 3t1 and the third tap 3t3.
  • the fourth tap 3t4 constitutes a tap 3t having a winding ratio N2 / N1 of the transformer 3a of 6/5. Between the first tap 3t1 and the fourth tap 3t4, a tap voltage having a magnitude of 6/5 of the input voltage input to the primary coil 3a1 of the transformer 3a is generated.
  • the transformer 3a can change the transformation ratio by appropriately switching the connected tap 3t by the relay 3b.
  • a plurality of taps 3t may be appropriately provided in the secondary coil 3a2 according to the adjustment range of the input voltage.
  • the transformer 3a is not limited to the case where the plurality of taps 3t are provided in the secondary side coil 3a2, but may be provided in the primary side coil 3a1 so as to change the transformation ratio.
  • an insulating transformer in which the primary side coil 3a1 and the secondary side coil 3a2 are electrically insulated can be used.
  • the transformer 3a is not limited to the structure of an insulating transformer.
  • the transformer 3a may be a single-winding transformer in which the primary winding and the secondary winding share a part, and the primary winding and the secondary winding are not electrically insulated.
  • the single-winding transformer has a small impedance of the shunt winding, which is a shared portion of the primary winding and the secondary winding, and tends to have a smaller output voltage fluctuation rate than the insulating transformer. In the shunt winding, only the current corresponding to the turn ratio N2 / N1 between the primary winding and the secondary winding flows, so that the wire diameter of the winding can be made smaller than that of the insulating transformer.
  • the voltage adjustment unit 3 may include one or more relays 3b according to the adjustment range of the input voltage.
  • the voltage adjustment unit 3 includes, for example, three relays 3b for adjusting the input voltage in three stages.
  • the three relays 3b are also referred to as a first relay 31a, a second relay 31b, and a third relay 31c.
  • the first relay 31a to the third relay 31c are provided so as to correspond one-to-one with the second tap 3t2 to the fourth tap 3t4.
  • the first relay 31a is connected to the second tap 3t2 and the first output terminal 2a.
  • the second relay 31b is connected to the third tap 3t3 and the first output terminal 2a.
  • the third relay 31c is connected to the fourth tap 3t4 and the first output terminal 2a.
  • the relay 3b constitutes a part of a tap selector that selects any one of the plurality of taps 3t of the transformer 3a.
  • the relay 3b is electrically connected to the relay control unit 3e so that a control signal from the relay control unit 3e of the control unit 3c is input.
  • the first relay 31a to the third relay 31c are electrically connected to the relay control unit 3e so as to be independently driven.
  • the first relay 31a to the third relay 31c are configured to be able to switch each based on a control signal from the relay control unit 3e.
  • the first relay 31a to the third relay 31c can change the electrical connection state between the secondary coil 3a2 and the first output terminal 2a of the transformer 3a.
  • the voltage adjustment unit 3 can change the transformation ratio of the transformer 3a by changing the electrical connection state between the secondary coil 3a2 and the first output terminal 2a by the relay 3b.
  • the number of relays 3b is not limited to three, that is, the first relay 31a, the second relay 31b, and the third relay 31c.
  • the stabilized power supply 10 can finely adjust the output voltage as the number of the taps 3t provided in the secondary coil 3a2 of the transformer 3a and the relays 3b provided corresponding to the taps 3t increases.
  • the relay 3b and the tap 3t are not necessarily limited to a structure provided in a one-to-one correspondence.
  • the relay 3b is good also as a structure which can switch the connection of the two taps 3t and the 1st output terminal 2a by comprising c contact.
  • the relay 3b that constitutes the c contact has a configuration in which two relays 3b that constitute the a contact are connected in parallel, a configuration in which the relay 3b that constitutes the a contact and the relay 3b that constitutes the b contact are connected in parallel, Similar functions can be achieved.
  • the relay 3b which comprises one c contact can be used instead of the 1st relay 31a and the 2nd relay 31b, for example.
  • the relay 3b can be configured to include, for example, a contact device and an electromagnet device.
  • the contact device includes a fixed contact portion and a movable contact.
  • the relay 3b is configured to be able to move between a contact position where the movable contact is in contact with the fixed contact portion and a separation position where the movable contact is separated from the fixed contact portion.
  • a material of the fixed contact portion for example, copper or the like can be used.
  • the movable contact can be formed by punching or bending a metal plate.
  • As a material of the movable contact for example, copper can be used.
  • the electromagnet device can be configured to include an armature and an electromagnet unit that moves the armature by electromagnetic force.
  • the electromagnet device moves the armature by the electromagnetic force from the electromagnet unit based on the control signal from the relay control unit 3e.
  • the electromagnet device can move the movable contact by moving the armchair.
  • the control unit 3c includes a state detection unit 3d, a relay control unit 3e, and a voltage monitoring unit 3g.
  • the state detection unit 3d is provided in the control unit 3c, but the state detection unit 3d may be provided separately from the control unit 3c.
  • the control unit 3c preferably includes a notification control unit 3f and a cutting control unit 3h.
  • the control part 3c can be comprised by the microcomputer driven with a suitable program, for example.
  • the voltage monitoring unit 3g is electrically connected to the voltage detection unit 3k that detects the input voltage.
  • the voltage monitoring unit 3g is electrically connected to the relay control unit 3e.
  • the voltage monitoring unit 3g monitors the input voltage of the system power input to the input terminal unit 1 based on the signal from the voltage detection unit 3k.
  • the voltage monitoring unit 3g can be configured to identify the maximum value of the AC voltage from the input system power supply and determine whether the maximum value is within a predetermined voltage range.
  • the maximum value of the input AC voltage is also referred to as a target voltage.
  • the voltage monitoring unit 3g compares the target voltage with a preset upper limit value or lower limit value of the voltage.
  • the upper limit value of the voltage and the lower limit value of the voltage may be stored in a storage device provided separately from the storage device of the control unit 3c and the control unit 3c.
  • the voltage monitoring unit 3g may be configured to compare the target voltage with a preset upper limit value or lower limit value of the voltage using a comparison circuit.
  • the comparison circuit can have an appropriate configuration using a comparator.
  • the voltage monitoring unit 3g allows the electric power between the output terminal unit 2 and the transformer 3a so that the output voltage falls within a predetermined voltage range.
  • An adjustment signal is output to the relay control unit 3e in order to change the connection and change the voltage.
  • the voltage monitoring unit 3g may be configured to monitor the voltage of the relay 3b and output a monitoring signal to the relay control unit 3e.
  • the voltage detection unit 3k is configured to detect the input voltage input to the input terminal unit 1.
  • the voltage detection unit 3k is provided in the stabilized power supply device 10, but is not necessarily provided in the stabilized power supply device 10 itself.
  • the stabilized power supply 10 may have a configuration in which the voltage detection unit 3k is separately provided outside the stabilized power supply 10 as long as the input voltage can be detected.
  • the voltage detection unit 3k may include a diode bridge circuit 4a and a series circuit of a first voltage dividing resistor 4b and a second voltage dividing resistor 4c.
  • the diode bridge circuit 4a has an AC input terminal electrically connected between the first input terminal 1a and the second input terminal 1b.
  • the diode bridge circuit 4a has a DC output terminal connected between both ends of the series circuit of the first voltage dividing resistor 4b and the second voltage dividing resistor 4c.
  • the diode bridge circuit 4a rectifies the voltage input from the input terminal unit 1 and outputs the rectified voltage to a series circuit of the first voltage dividing resistor 4b and the second voltage dividing resistor 4c.
  • a connection point between the first voltage dividing resistor 4b and the second voltage dividing resistor 4c is electrically connected to the voltage monitoring unit 3g of the control unit 3c.
  • the voltage detector 3k and the primary coil 3a1 of the transformer 3a are connected in parallel.
  • the input voltage is applied to the voltage detection unit 3k and the primary coil 3a1 of the transformer 3a.
  • the voltage detector 3k rectifies the input voltage and divides it to a predetermined voltage level.
  • a voltage corresponding to the voltage division ratio between the first voltage dividing resistor 4b and the second voltage dividing resistor 4c is applied to the voltage monitoring unit 3g of the control unit 3c.
  • the relay control unit 3e controls the relay 3b based on the adjustment signal from the voltage monitoring unit 3g.
  • the relay control unit 3e is configured so that the output voltage is within the predetermined voltage range.
  • the relay 3b is controlled.
  • the relay control unit 3e only needs to be able to control each of the first relay 31a, the second relay 31b, and the third relay 31c according to the magnitude of the input voltage so that any one of them is on and the rest are off.
  • the relay control unit 3 e In the stabilized power supply 10, if the input voltage is within a predetermined voltage range, the relay control unit 3 e outputs an ON signal to the second relay 31 b to turn on the contact device of the second relay 31 b in order to output it as it is. When the input voltage is within a predetermined voltage range, the relay control unit 3e controls the second relay 31b to be turned on so that only the second relay 31b is turned on. The relay controller 3e turns off the first relay 31a and the third relay 31c when the input voltage is within a predetermined voltage range. In the stabilized power supply 10, when the input voltage is within a predetermined voltage range, the input voltage input to the input terminal unit 1 is output from the output terminal unit 2 via the transformer 3 a having a transformation ratio of 1.
  • the stabilized power supply apparatus 10 may be configured to output the input voltage input to the input terminal unit 1 from the output terminal unit 2 without passing through the transformer 3a when the input voltage is within a predetermined voltage range.
  • the stabilized power supply device 10 is configured to output without passing through the transformer 3a, thereby reducing power loss as compared with the case of passing through the transformer 3a. it can.
  • the relay control unit 3e when the target voltage falls below a lower limit value of a predetermined voltage range, the relay control unit 3e outputs an ON signal for conducting only the contact device of the third relay 31c to the third relay 31c.
  • the relay control unit 3e outputs an on signal for conducting only the contact device of the third relay 31c to the third relay 31c, and outputs an off signal for interrupting the contact device of the second relay 31b to the second relay 31b.
  • the relay control unit 3e When the input voltage is within a predetermined voltage range, the relay control unit 3e outputs an off signal to the first relay 31a so as to maintain the state where the contact device of the first relay 31a is cut off. .
  • the relay control unit 3e When the contact device of the first relay 31a is cut off, the relay control unit 3e does not need to newly output an off signal to the first relay 31a.
  • the magnitude of the input voltage input to the input terminal unit 1 is boosted 6/5 times by turning off the contact device of the second relay 31 b and turning on the contact device of the third relay 31 c. A voltage can be output from the output terminal portion 2.
  • the relay control unit 3e when the target voltage exceeds the upper limit value of the voltage, the relay control unit 3e outputs an ON signal for conducting only the contact device of the first relay 31a to the first relay 31a.
  • the relay control unit 3e outputs an ON signal to the first relay 31a, and outputs an OFF signal that shuts off the contact device of the second relay 31b to the second relay 31b.
  • the relay control unit 3e When the input voltage is within a predetermined voltage range, the relay control unit 3e outputs an OFF signal to the third relay 31c so as to maintain the state where the contact device of the third relay 31c is cut off. .
  • the relay control unit 3e does not need to newly output an off signal to the third relay 31c.
  • the magnitude of the input voltage input to the input terminal unit 1 is lowered by 4/5 times by turning off the contact device of the second relay 31 b and turning on the contact device of the first relay 31 a.
  • a voltage can be output from the output terminal portion 2.
  • the relay control unit 3e constitutes a part of the tap selector. The relay control unit 3e controls the relay 3b so that the output voltage is within a predetermined voltage range.
  • the stabilized power supply device 10 may be configured to control the relay 3b to stop the relay 3b by a signal from the relay control unit 3e when the transformed output voltage is outside a predetermined voltage range.
  • the relay control unit 3 e when the output voltage is outside the predetermined voltage range even after transformation, the relay control unit 3 e outputs an off signal that shuts off all of the first relay 31 a to the third relay 31 c. It can be configured to output to the relay 31c.
  • the stabilized power supply device 10 stops so that the output voltage from the output terminal unit 2 is not output.
  • the stabilized power supply 10 When the output voltage is outside the predetermined voltage range, the stabilized power supply 10 automatically shuts off all of the first relay 31a to the third relay 31c and then automatically passes through the first relay 31a to the first relay after the elapse of a predetermined return time. You may comprise so that it may return to the state before interrupting all the 3 relays 31c. For example, even if power supply to a load device having a motor is stopped, the stabilized power supply 10 operates the load device normally if the return time is set so that power is supplied after the motor of the load device is completely stopped. Can be made.
  • the stabilized power supply 10 switches the relay 3b so that the output power is within a predetermined voltage range.
  • the stabilized power supply 10 monitors the input voltage from the system power supply, performs tap selection of the transformer 3a according to the input voltage by the relay 3b, and realizes stabilization of the output voltage by switching the transformation ratio.
  • the stabilized power supply 10 may drive the relay 3b several tens of times a day, depending on the system power supply. For example, with the occurrence of an open / close arc caused by switching between ON and OFF, the relay 3b may be melted or melted at a part of the contact device, or melted at the contact of the contact device, and may not operate normally.
  • the relay 3b may not operate normally due to a contact failure due to repeated use or a conduction failure due to the formation of an insulating film such as an oxide film. Furthermore, there is a possibility that the relay 3b does not operate normally because the mechanical movable part does not move in either the contact device or the electromagnet device.
  • the stabilized power supply 10 may not operate normally due to a failure of the relay 3b even when using a contactless relay 3b such as a semiconductor relay.
  • the state detection unit 3d constitutes an abnormality detection unit 3d1 capable of detecting an abnormality of the relay 3b such as a failure that prevents the relay 3b from operating normally.
  • the abnormality detection unit 3d1 detects an abnormality of the relay 3b based on whether or not the amount of current flowing through the relay 3b changes. Can do.
  • the abnormality detection unit 3d1 is preferably configured to detect the presence or absence of a control signal output from the relay control unit 3e to the relay 3b.
  • the abnormality detection unit 3d1 may be configured to estimate that a control signal for controlling switching of the relay 3b is output based on an adjustment signal output from the voltage monitoring unit 3g to the relay control unit 3e. As shown in FIG. 4, the abnormality detection unit 3d1 can be configured to be connected to a first current detection circuit 3k1 connected to the output terminal of the relay 3b. The first current detection circuit 3k1 detects whether there is a change in the amount of current flowing through the relay 3b.
  • the first current detection circuit 3k1 may be configured to include, for example, a shunt resistor and a current transformer.
  • the abnormality detection unit 3d1 is not limited to a configuration that detects whether there is a change in the amount of current flowing through the relay 3b before and after the relay control unit 3e drives the relay 3b.
  • the abnormality detection unit 3d1 may be configured to detect a change in potential difference between both ends of the input end and the output end of the relay 3b.
  • the abnormality detection unit 3d1 can be configured to be connected to a voltage detection circuit 3k2 that detects a change in potential difference between both ends of the relay 3b.
  • the abnormality detection unit 3d1 includes a second current detection circuit 3k3 that detects a change in the current flowing through the coil of the electromagnet device of the relay 3b when the relay control unit 3e drives the relay 3b.
  • Abnormal conditions can also be detected.
  • the relay 3b detects by the second current detection circuit 3k3 that the reactance of the coil of the electromagnet device does not change even when the contact device is driven. An abnormal state can be detected.
  • the second current detection circuit 3k3 may be configured to include a shunt resistor, for example.
  • the abnormality detection unit 3d1 can detect that the contact of the contact device of the relay 3b is in an abnormal state due to welding or the like. Even if the relay control unit 3e turns off the relay 3b, the abnormality detection unit 3d1 is in a state where the contact device of the relay 3b is closed and the relay 3b is in an abnormal state when the current flows through the first current detection circuit 3k1. Can be detected. Even when the relay control unit 3e turns on the relay 3b, the abnormality detection unit 3d1 is in a state where the contact device of the relay 3b is open and the relay 3b is in an abnormal state when no current flows through the first current detection circuit 3k1. It can be detected.
  • the abnormality detection unit 3d1 is preferably electrically connected to the cutting control unit 3h.
  • the abnormality detection unit 3d1 can output an abnormal signal to the disconnection control unit 3h, and the disconnection control unit 3h can turn off the disconnection relay 4. It is preferable that the abnormality detection unit 3d1 is electrically connected to the relay control unit 3e.
  • the abnormality detection unit 3d1 can output an abnormality signal to the relay control unit 3e so that the relay control unit 3e controls the relay 3b to be turned off.
  • the state detection unit 3d is not limited to the structure of the above-described abnormality detection unit 3d1 that detects an abnormal state in which switching of the relay 3b is not performed.
  • the state detection unit 3d may be configured to detect heat generation and sound generated in the relay 3b.
  • the state detector 3d may be configured to detect a state in which heat and sound generated in the relay 3b are larger than heat and sound generated when the relay 3b is normally driven.
  • the disconnect control unit 3h is configured to turn off the disconnect relay 4 and disconnect the voltage adjusting unit 3 of the stabilized power supply device 10 from the system power supply based on the abnormality signal from the abnormality detection unit 3d1.
  • the disconnect control unit 3h controls the disconnect relay 4 to control the voltage from the system power supply when the input voltage detected by the voltage detection unit 3k cannot be within a predetermined output range. 3 may be separated.
  • the disconnecting relay 4 is less frequently used than the relay 3b used for switching the tap 3t, so that it is less likely to cause an abnormality such as a failure, and the reliability of the stabilized power supply 10 can be improved. .
  • the notification control unit 3f controls the notification unit 5 that notifies the user of the state of the relay 3b.
  • the notification control unit 3f preferably includes a display control unit 3f1 and a sound source control unit 3f2.
  • the display control unit 3f1 outputs a display control signal to the light emitting device 6a1 and the display device 6a2.
  • the notification unit 5 can notify the user of the state of the relay 3b whether or not the relay 3b is out of order, based on the control state of the light emitting diode such as turning on, turning off, or blinking of the light emitting diode.
  • the stabilized power supply device 10 preferably includes a disconnect relay 4 electrically connected between the system power supply and the voltage adjusting unit 3 as in the present embodiment.
  • the control unit 3c can be configured to turn off the disconnect relay 4 and disconnect the voltage adjustment unit 3 from the system power supply.
  • the disconnection relay 4 is turned on and off by the disconnection control unit 3h, thereby disconnecting the electrical connection between the system power supply and the load device without controlling the first relay 31a to the third relay 31c. be able to.
  • the disconnect relay 4 may use a breaker that can turn on and off the electrical connection between the system power supply and the load device by a disconnect signal from the disconnect control unit 3h.
  • the stabilized power supply 10 can provide a breaker for separating the voltage adjustment unit 3 from the system power supply, so that when the abnormal state of the relay 3b is detected, the system power supply and the voltage adjustment unit 3 can be disconnected by the breaker.
  • the stabilized power supply apparatus 10 may be configured to use a breaker capable of disconnecting the system power supply as a main breaker or a branch breaker of a distribution board in the house.
  • the disconnection relay 4 can be configured not only using a main breaker or branch breaker of a distribution board in the house, but also using a breaker separate from the distribution board.
  • the stabilized power supply device 10 may control the relay 3b in order to switch the electrical connection state between the system power supply and the load device.
  • the stabilized power supply 10 may be configured to turn off the breaker that functions as the disconnecting relay 4 after controlling the relay 3b when the abnormality detecting unit 3d1 detects an abnormal state.
  • the breaker can be configured to have a communication function in which on / off control is performed by remote operation.
  • the stabilized power supply 10 can be configured to have a communication unit for remotely operating the breaker.
  • the stabilized power supply device 10 controls the breaker on and off based on the state of the relay 3b detected by the state detection unit 3d by the communication unit. In the stabilized power supply 10, the communication unit may perform on / off control of the breaker by wire, or may perform on / off control of the breaker wirelessly.
  • the notification unit 5 is configured to be able to notify the user of the state of the relay 3b. When the relay 3b does not operate normally, the notification unit 5 can notify the user so that it can be visually and audibly recognized.
  • the stabilized power supply 10 can be configured to always light up the light emitting device 6a1 during operation and to blink the light emitting device 6a1 when the relay 3b is in an abnormal state.
  • reporting part 5 can have a function which alert
  • the notification unit 5 can notify the state of the relay 3b based on the notification signal from the notification control unit 3f.
  • reporting part 5 can be set as the structure using light-emitting devices 6a1, such as a light emitting diode, EL (Electro * Luminescence) apparatus, a neon lamp, an incandescent lamp, for example.
  • the notification unit 5 is not limited to the configuration using the light emitting device 6a1, but may be configured using a display device 6a2 such as a liquid crystal display device.
  • reporting part 5 can alert
  • the display device 6a2 can be configured to include, for example, a rectangular light guide member, a reflective layer on the back side of the light guide member, and a liquid crystal device on the front side of the light guide member.
  • the light guide member is configured to function as a backlight by providing a light emitting diode on one end side of the light guide member.
  • the backlight can be made to function as the light emitting device 6a1 by lighting when the relay 3b fails.
  • the liquid crystal device is configured in a matrix display type in which a large number of pixels are arranged in a matrix form vertically and horizontally, and displays characters, figures, and the like by appropriate pixels.
  • the liquid crystal device constituting the display device 6a2 can display, for example, “being out of order” or “need replacement”.
  • the display device 6a2 may display “input voltage” and “output voltage” so as to notify the user.
  • reporting part 5 can also be set as the structure provided with light-emitting device 6a1 and display device 6a2 with the liquid crystal display device which uses a light emitting diode as a backlight, for example.
  • the notification unit 5 may have a configuration using a sound source device 6c such as a buzzer or a speaker.
  • reporting part 5 can alert
  • the notification unit 5 may be configured to include an appropriate amplifier 6b in order to notify the state of the relay 3b from the sound source device 6c by a notification signal from the sound source control unit 3f2.
  • the amplifier 6b can amplify the notification signal from the sound source control unit 3f2 and output it from the sound source device 6c.
  • the stabilized power supply device 10 of the present embodiment includes a notification unit 5 that notifies the state of the relay 3b detected by the state detection unit 3d. By providing the notification unit 5, the stabilized power supply 10 of the present embodiment can notify the user of the failure of the relay 3 b and the replacement of the relay 3 b and the stabilized power supply 10.
  • the stabilized power supply 10 starts the operation, so that the relay control unit 3e controls the relay 3b so that the voltage monitoring unit 3g monitors the input voltage and the output voltage falls within a predetermined voltage range.
  • the relay 3b is switched by a control signal from the relay control unit 3e.
  • the abnormality detection unit 3d1 detects whether or not a current is flowing through the relay 3b based on a signal from the first current detection circuit 3k1. To do.
  • the stabilized power supply 10 adjusts the voltage from the system power supply by turning off the disconnecting relay 4 in the disconnecting control unit 3h. Part 3 is cut off.
  • the notification control unit 3f controls the notification unit 5 to notify the user.
  • the stabilized power supply 10 displays on the display device 6a2 that the relay 3b is in an abnormal state, and prompts the user to replace the relay 3b or the stabilized power supply 10. Can be configured.
  • the stabilized power supply 10 of the present embodiment includes an abnormality detection unit 3d1 as the state detection unit 3d, thereby detecting an abnormal state of the relay 3b and using it to suppress the failure of the load device and the occurrence of malfunction. be able to.
  • Embodiment 2 The stabilized power supply 10 of the second embodiment shown in FIG. 5 is different from the first embodiment shown in FIG. 1 mainly in the configuration of the state detection unit 3d.
  • symbol is attached
  • the state detection unit 3d detects the state of the relay 3b in which the number of times of control for switching the relay 3b exceeds a predetermined number as an excess state. It is comprised by the frequency
  • the stabilized power supply 10 has a structure having the number detection unit 3d2, so that even when the relay 3b is driven normally, the user can grasp the state of the relay 3b, and the reliability can be further increased. .
  • the number detection unit 3d2 may include a storage unit and a comparison unit.
  • the storage unit is configured to store a predetermined number of times set in advance.
  • the storage unit is not limited to the configuration provided in the number detection unit 3d2, and may be a storage device provided separately from the control unit 3c.
  • the storage unit can be configured using a semiconductor memory such as an EEPROM (ElectricallylectErasable Programmable Read Only Memory), for example.
  • the comparison unit can be configured using a comparator circuit so that the stored predetermined number of times can be compared with the counted number of times of control.
  • the number-of-times detection unit 3d2 counts the number of times the relay control unit 3e performs switching control of the relay 3b, and can detect an excess state exceeding a predetermined number of times.
  • the number detection unit 3d2 can be configured to output a control signal for controlling the relay control unit 3e, the notification control unit 3f, and the disconnection control unit 3h based on the output value of the comparison unit.
  • the predetermined number of times for example, the number of times corresponding to the durability number of the relay 3b or the guaranteed number of times of the relay 3b specified by the manufacturer of the relay 3b can be cited.
  • the durability of the relay 3b is defined by the manufacturer of the relay 3b, and refers to the number of times the relay 3b operates without any abnormality.
  • the guaranteed number of times of the relay 3b is, for example, the number of times that a manufacturer or the like guarantees the relay 3b.
  • the guaranteed number of times of the relay 3b can be set to a number smaller than the number of durability times of the relay 3b.
  • the number of times corresponding to the number of endurances or the number of guarantees means the number of times of endurance or guarantees detected by the number detection unit 3d2 before reaching the number of times of endurance or the number of guarantees so that the user can be notified that the number of times of durability or the number of guarantees is close
  • the number of times may be less than the number of times.
  • the switching frequency of the contact device generally associated with switching of the relay 3b is determined by the manufacturer of the relay 3b or the like.
  • the relay 3b may be set to a guaranteed number of times, for example, 100,000 times, with one opening / closing operation of the contact device. In the stabilized power supply 10, if the number of times the relay 3b is switched is 100,000 or more, the manufacturer of the relay 3b may not guarantee the operation of the relay 3b.
  • the relay 3b can be used even if the number of times of guarantee is exceeded, but the number of times of guarantee serves as a guideline for lowering the reliability. When the relay 3b is used beyond the guaranteed number of 100,000 times, it is considered that the probability that it becomes difficult to operate normally due to, for example, wear of the contact device or the drive unit is increased.
  • the relay 3b when configured by a contact relay having a contact device, it can be manufactured at a low cost with a relatively simple configuration, as compared with a non-contact relay that is a semiconductor relay. However, since the contact relay has a mechanical movable part, the life of the relay 3 b itself may determine the life of the stabilized power supply 10.
  • the number detection unit 3d2 can detect the current number of times of control with respect to a predetermined number of times set as the upper limit value of the number of times of control of the relay 3b by counting the number of times of control for switching the relay 3b.
  • the number of times of control of the relay 3 b is counted, and if the counted number of times of control exceeds a threshold corresponding to the guaranteed number of times as a predetermined number, the relay 3 b and the stabilized power supply 10 are in a replacement period.
  • This can be configured to notify the user. If the user can recognize the state of the relay 3b by the frequency detection unit 3d2, the user can grasp the life of the stabilized power supply 10 in the stabilized power supply 10. If the number of times of control of the relay 3b exceeds the threshold value corresponding to the guaranteed number of times, the stabilized power supply 10 can be connected to the relay 3b by the relay controller 3e before the relay 3b becomes conductive due to welding of the contacts of the contact device.
  • a relay 3b is a non-contact relay such as a semiconductor relay, if the number of times the relay 3b is controlled exceeds a predetermined number, the reliability of the stabilized power supply 10 is improved by turning the relay 3b off. It can also be increased.
  • the number detection unit 3d2 compares the threshold corresponding to the guaranteed number of times with the number of times of control in the number detection unit 3d2.
  • the number detection unit 3d2 stores in advance a threshold corresponding to the guaranteed number of times in the storage unit.
  • the threshold value is set to a number slightly smaller than the guaranteed number of times guaranteed by the manufacturer.
  • the number detection unit 3d2 may have a function of notifying the user of replacement of the relay 3b or the stabilized power supply 10 when the number of times of control of the relay 3b exceeds a threshold corresponding to the guaranteed number of times.
  • the stabilized power supply 10 can provide the user with information on the replacement time of the relay 3b and the stabilized power supply 10 by comparing the number of times of control of the relay 3b with a threshold corresponding to the guaranteed number of times.
  • the storage unit stores a threshold value corresponding to the guaranteed number of times in advance, and compares the control number in the number detection unit 3 d 2 with the threshold value corresponding to the guaranteed number of times.
  • the stabilized power supply 10 may be configured to provide a function for notifying the replacement of the relay 3b or the stabilized power supply 10 if the number of times of control of the relay 3b reaches the guaranteed number of times.
  • the stabilized power supply device 10 preferably includes a disconnect relay 4 electrically connected between the system power supply and the voltage adjusting unit 3 as in the present embodiment.
  • the control unit 3c can be configured to turn off the disconnect relay 4 and disconnect the voltage adjustment unit 3 from the system power supply.
  • the stabilized power supply device 10 includes the number detection unit 3d2 as the state detection unit 3d and the disconnecting relay 4, thereby detecting an excess state of the relay 3b and suppressing occurrence of a failure or malfunction of the load device. Can be used.
  • the number-of-times detecting unit 3d2 detects from the comparison result of the comparing unit that the number of times of control exceeds a preset threshold corresponding to the number of times of durability of the relay 3b
  • the number-of-times detecting unit 3d2 outputs an operation signal to the cutting control unit 3h.
  • the disconnection control unit 3h outputs a disconnection signal to be turned off to the disconnection relay 4 based on the operation signal from the number detection unit 3d2.
  • the stabilized power supply device 10 determines whether or not the state of the relay 3b exceeds the endurance count based on a comparison result between the control count of the relay 3b and a threshold value corresponding to the endurance count of the relay 3b. To do.
  • the control unit 3c determines that the state of the relay 3b exceeds the endurance number and determines that the voltage from the system power supply is disconnected by the disconnecting relay 4. It can comprise so that the adjustment part 3 can be cut away.
  • the stabilized power supply device 10 detects an excess state in which the number of times of control of the relay 3b exceeds a predetermined number of times of control, and is disconnected from the system power supply by the disconnect relay 4, so that the relay 3b breaks down and damages load equipment. The possibility of making it possible can be reduced.
  • the stabilized power supply 10 may turn off the relay 3b by the relay control unit 3e if the number of times the relay 3b is controlled exceeds a threshold value corresponding to the number of durability times.
  • the notification control unit 3f controls the notification unit 5 that notifies the user of the state of the relay 3b.
  • the notification unit 5 indicates to the user whether or not the relay 3b exceeds a threshold corresponding to the guaranteed number of times or a threshold corresponding to the number of endurances depending on the control state of the light emitting diodes such as turning on, turning off, and blinking of the light emitting diodes.
  • the state of 3b can be notified.
  • the notification unit 5 can notify the user of the state of the relay 3b, such as the number of times the relay 3b is driven, based on information displayed on the display device 6a2.
  • the notification unit 5 may have a function of displaying the number of times of control of the relay 3b.
  • reporting part 5 can have a function which alert
  • the stabilized power supply 10 can make the user visually or audibly recognize the notification contents by setting the replacement time of the relay 3b or the stabilized power supply 10 as the notification contents of the notification unit 5.
  • the notification unit 5 can display the number of times the relay 3b is controlled, the number of times the relay 3b is guaranteed, the number of times of durability, the number of times of guarantee, the remaining number of times until the number of times of durability, and the like by the liquid crystal device constituting the display device 6a2. If the threshold value stored in advance in the storage unit exceeds the threshold value, the notification control unit 3f can alert the user by controlling the backlight to blink.
  • the stabilized power supply 10 has a function of displaying the number of times of control of the relay 3b as the display content of the notification unit 5, so that the user recognizes the life of the relay 3b and the replacement timing of the relay 3b or the stabilized power supply 10 Can be predicted.
  • the notification unit 5 notifies the user of the replacement or replacement timing of the relay 3b or the stabilized power supply 10 by displaying that the replacement time of the relay 3b or the stabilized power supply 10 has come as the notification content. Can do.
  • the number of control times of the first relay 31a to the third relay 31c tends to be different.
  • the stabilized power supply 10 has the largest number of times of control of the second relay 31b, although it depends on the fluctuation of the input voltage.
  • the stabilized power supply 10 when the first relay 31 a to the third relay 31 c have the same structure, the number of control times of the second relay 31 b tends to reach the guaranteed number of times earlier.
  • the stabilized power supply 10 can be configured to notify the user of the state of the relay 3b with reference to the relay 3b having the largest number of times of control among the plurality of relays 3b.
  • the stabilized power supply 10 starts operation, and the relay control unit 3e controls the driving of the relay 3b so that the voltage monitoring unit 3g monitors the input voltage and falls within a predetermined voltage range.
  • the number detection unit 3d2 counts the number of control times for performing the switching control of the relay 3b.
  • the number-of-times detecting unit 3d2 counts the number of times incremented to the number of times of control of the relay 3b stored in the storage unit as a new number of times of control, and stores it in the storage unit.
  • the number detection unit 3d2 compares the counted control number with a predetermined number stored in the storage unit by the comparison unit.
  • the number-of-times detecting unit 3d2 sets the number of times smaller than the number of guaranteed times or the number of durability times specified by the manufacturer for the relay 3b as the predetermined number of times.
  • the number-of-times detecting unit 3d2 only needs to set, for example, a number of times less than the guaranteed number of times or the number of durability times specified by the manufacturer for the relay 3b as a threshold value.
  • the number-of-times detecting unit 3d2 detects whether or not the number of times of control exceeds the threshold value corresponding to the guaranteed number of times or the durability number.
  • the notification control unit 3f notifies the state of the relay 3b from the notification unit 5.
  • the stabilized power supply 10 causes the user to recognize that the replacement time of the relay 3b or the stabilized power supply 10 is approaching, and prompts the user to replace the relay 3b or the stabilized power supply 10. In this way, it can be displayed on the display device 6a2.
  • the stabilized power supply device 10 may be configured to stop driving of the relay 3b by the relay control unit 3e when the relay 3b is in an excess state.
  • the stabilized power supply device 10 of the present embodiment is not limited to the above-described configuration, and may be configured by replacing the configuration of the present embodiment with the appropriate configuration described in the first embodiment.
  • a stabilized power supply 10 according to the third embodiment illustrated in FIG. 6 includes, as the state detection unit 3d, an abnormality detection unit 3d1 similar to that according to the first embodiment illustrated in FIG. The point provided with is different from the first embodiment. Further, the stabilized power supply 10 of the present embodiment differs from the first embodiment in the configuration of the voltage monitoring unit 3g.
  • symbol is attached
  • the stabilized power supply apparatus 10 of the present embodiment includes both an abnormality detection unit 3d1 and a frequency detection unit 3d2 as the state detection unit 3d.
  • the voltage monitoring unit 3g detects the voltage between both ends of the relay 3b, and detects whether or not the input power is within a predetermined range.
  • the voltage monitoring unit 3g detects the voltage across the relay 3b, for example, the output from the voltage detection circuit connected between the both ends of the first relay 31a, the second relay 31b, and the third relay 31c is input. Can be configured.
  • the stabilized power supply 10 starts the operation, and the relay control unit 3e controls the driving of the relay 3b so that the voltage monitoring unit 3g monitors the input voltage and falls within a predetermined range.
  • the relay control unit 3e controls the relay 3b so that the input voltage from the system power supply can be output to the load device with the output voltage transformed so as to be within a predetermined voltage range by the transformer 3a. (Step 1). In FIG. 7, the step is indicated by S.
  • the abnormality detection unit 3d1 detects whether or not the relay 3b is normally driven by a signal from the first current detection circuit 3k1 ( Step 2).
  • the disconnection control unit 3h electrically disconnects the system power supply and the voltage adjustment unit 3 by turning off the disconnection relay 4, and the voltage from the system power supply The adjustment part 3 is cut off.
  • the notification control unit 3f notifies the abnormal state of the relay 3b from the notification unit 5 (step 7).
  • the stabilized power supply 10 informs the user to prompt the user to replace the relay 3b or the stabilized power supply 10 with the blinking of the light emitting device 6a1 or the display unit of the display device 6a2. It can be configured.
  • the stabilized power supply 10 when the switching control of the relay 3b is normally performed, the process proceeds to the next step 3.
  • the number detection unit 3d2 counts the number of times the relay 3b is switched (step 3).
  • the number-of-times detecting unit 3d2 compares the number of times of control with a threshold corresponding to the guaranteed number of times stored in the storage unit.
  • the number-of-times detecting unit 3d2 sets the number of times smaller than the guaranteed number of times specified by the manufacturer for the relay 3b as the predetermined number of times. For example, the stabilized power supply 10 only needs to set the number of times less than the guaranteed number of times specified by the manufacturer for the relay 3b as the threshold value.
  • the number-of-times detecting unit 3d2 When counting the number of times of control, the number-of-times detecting unit 3d2 counts the number of times incremented to the number of times of control of the relay 3b stored in the storage unit as the counted new control number. The number detection unit 3d2 stores the counted new control number in the storage unit.
  • the stabilized power supply 10 if the number of times of control exceeds the threshold value corresponding to the guaranteed number of times, it is determined that the number of times of control has reached the specified number (step 4).
  • the counted number of times of control is indicated as Nc
  • the threshold corresponding to the guaranteed number of times is indicated as Nw.
  • the notification control unit 3f When the number detection unit 3d2 detects the prescribed state of the relay 3b, the notification control unit 3f notifies the ground state of the relay 3b from the notification unit 5 such as the light emitting device 6a1, the display device 6a2, or the sound source device 6c (step 5). .
  • the stabilized power supply 10 monitors the input voltage again if the number of times of control is equal to or less than a threshold value corresponding to the guaranteed number of times.
  • the number of times detector 3d2 proceeds to the next step 6.
  • the number detection unit 3d2 compares the counted number of times of control with a threshold corresponding to the endurance number that is the predetermined number of times stored in the storage unit (step 6).
  • the number-of-times detecting unit 3d2 sets the number of times smaller than the number of endurances specified by the manufacturer for the first relay 31a as the predetermined number of times.
  • the stabilized power supply 10 only needs to set the number of times that is several percent less than the number of durability specified by the manufacturer for the first relay 31a as the threshold value.
  • the threshold value corresponding to the number of times of endurance is indicated as Ne.
  • the stabilized power supply 10 determines that the relay 3b is in an excess state if the number of times of control exceeds a threshold value corresponding to the number of durability times.
  • the relay control unit 3e turns off the disconnect relay 4 when the number detection unit 3d2 detects an excess state of the relay 3b (step 8).
  • the stabilized power supply 10 allows the user to recognize that the replacement time of the relay 3b and the stabilized power supply 10 is approaching before the relay 3b breaks down. Notify you to encourage replacement.
  • the stabilized power supply 10 can perform notification from the notification unit 5 to the user and disconnect the voltage adjustment unit 3 from the system power supply.
  • the stabilized power supply apparatus 10 monitors the input voltage again.
  • the stabilized power supply device 10 of this embodiment it has the alerting
  • the number detection unit 3d2 is configured so that the notification unit 5 can notify the specified state in which the number of times of control has reached the specified number of times less than the predetermined number as the state of the relay 3b.
  • the stabilized power supply device 10 of the present embodiment increases the usability while increasing the reliability by causing the notification unit 5 to notify the specified state where the number of times of control reaches the specified number of times less than the predetermined number as the state of the relay 3b. It becomes possible.
  • the stabilized power supply device 10 of the present embodiment is not limited to the above-described configuration, and may be configured by replacing the configuration of the present embodiment with the appropriate configuration described in the first or second embodiment.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
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Abstract

La présente invention traite le problème de la réalisation d'un dispositif d'alimentation électrique stabilisée capable d'améliorer encore la fiabilité. Un dispositif (10) d'alimentation électrique stabilisée selon l'invention comporte une unité (3) de réglage de tension qui délivre une tension introduite à partir d'une unité (2) de bornes de sortie de telle façon que la tension se situe à l'intérieur d'une plage de tension prédéterminée, ladite tension introduite ayant été introduite dans une unité (1) de bornes d'entrée. L'unité (3) de réglage de tension comprend un transformateur (3a), un relais (3b), une unité (3c) de commande et une unité (3d) de détection d'état. Le relais (3b) est configuré pour changer un branchement électrique entre le transformateur (3a) et l'unité (1) de bornes d'entrée ou l'unité (2) de bornes de sortie. L'unité (3c) de commande surveille la tension introduite, et commande la commutation du relais (3b) de telle façon qu'une tension délivrée à partir de l'unité (2) de bornes de sortie se situe à l'intérieur d'une plage de tension prédéterminée. L'unité (3d) de détection d'état détecte l'état du relais (3b).
PCT/JP2014/005353 2014-10-22 2014-10-22 Dispositif d'alimentation électrique stabilisée Ceased WO2016063313A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106953333A (zh) * 2017-05-13 2017-07-14 深圳国电粤能节能科技有限公司 一种智能中继电源装置及一种闭环反馈式电压控制方法
WO2023195437A1 (fr) * 2022-04-04 2023-10-12 株式会社オートネットワーク技術研究所 Dispositif de commande d'alimentation électrique, procédé de commande d'alimentation électrique et programme informatique

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JP2023152493A (ja) * 2022-04-04 2023-10-17 株式会社オートネットワーク技術研究所 給電制御装置、給電制御方法及びコンピュータプログラム

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