CN107134775A - A kind of power switch control and its control method for limiting the maximum electricity suppl power amount of electrical equipment - Google Patents
A kind of power switch control and its control method for limiting the maximum electricity suppl power amount of electrical equipment Download PDFInfo
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- CN107134775A CN107134775A CN201710383094.9A CN201710383094A CN107134775A CN 107134775 A CN107134775 A CN 107134775A CN 201710383094 A CN201710383094 A CN 201710383094A CN 107134775 A CN107134775 A CN 107134775A
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Classifications
-
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
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Abstract
The invention belongs to feed back to automatically control electronic technology field, and in particular to the power switch and its control method of a kind of maximum electricity suppl power amount of limitation electrical equipment of utilization electronic technology.The power supply electric current of wherein electrical equipment is that I, voltage are U, maximum power supply available horsepower is P=UI, the electrical equipment overall operation time is T, consuming components number is N, N >=1, microcontroller voluntarily calculates and controlled power supply to dispense alternating current, N number of N number of consuming components of switchgear distribution for consuming components according to the feedback data of control system；Reponse system microcontroller switch connection time be followed successively by T1, T2, T3 ... TN, wherein switch switching 1 cycle is followed successively by from T1 to TN.The present invention interior at the same time can operate the electrical equipment consuming components of multiple general powers overloads, and be no more than maximum power supply available horsepower；Can be by the present invention using on the element of multiple different rated power by voltage-limiting element, the independent rated power of heating element heater can even exceed power supply maximal input itself, allow manufacturer to have great convenience and further simplify product design.
Description
Technical field
The invention belongs to feed back to automatically control electronic technology field, and in particular to a kind of limitation electrical equipment of utilization electronic technology
The power switch and its control method of maximum electricity suppl power amount.
Background technology
Existing many power amplifiers can provide the user more more flexible methods of operation, thus this electric appliances is very by user
Welcome.The electrical equipment of single group power component can only export a kind of power, if so that electrical equipment has many power, typically all by changing
The structure of consuming components realizes, the electric heaters of such as double groups electrothermal tube structures can provide PA, and (one of which electrothermal tube adds
Heat), PB (wherein another group electrothermal tube heating), three kinds of power combinations of PA+PB (two groups of electrothermal tubes are heated simultaneously).But,
Increase the method for power combination species by changing consuming components structure, the increase of consuming components cost can be caused, while also increasing
The installation complexities of consuming components, and then influence the production efficiency of electrical equipment complete machine.
It is used for controlling the technology of the consuming components in the power consumption electrical equipment such as water heater at present, is one or more consuming components
The combination rated power of (such as heating element heater) is limited in maximum or less than maximum electricity suppl power.If for example, water heater
Power supply is 220V, and maximum current supply is no more than 10A, then the combination rated power of one or more heating element heaters will be limited
System power in 220V is 2200W or smaller wattage, if other equipment also consumes electric current.
The solid-state electronic control technology of current new development, is frequently used for quickly by using the 0V of sine wave intersecting
Carry out on and off element power, to realize that power supply switching is opened or closed.Although this technology is generally only used for switching device power switch,
But it may also be used for reducing the average consumed power of electrical equipment.This power supply switching mode is sometimes when the maximum work of consuming components
Rate is simultaneously used when being not needed.For example when the setting power of electrical equipment has reached, when electrical equipment only need to keep this power, herein
In the case of, average consumed power will be reduced to it is any be located at 5% or 10% until 100% position.Further citing, when one
When water is heated to the temperature of setting by platform water heater, keep the temperature near design temperature point or design temperature point
Power used in temperature may only be the 10% of maximum consumption power.When this situation, solid-state electronic will pass through sine
The 0V of ripple intersects to switch heater element switch, speed be in 50Hz frequencies 100 times per second, or in 60Hz frequencies it is per second
120 times.For the power supply of a 50Hz frequency, 10% power consumption is reached, that power supply per second will be switched on 5
Complete cycle, disconnects remaining 45 cycles.By changing ratio of the connection cycle to break period, " average " power can position
In it is any from 0 to 100% position.Although However, it is noted that " average " power seems to reduce, but this is
Because reducing the weighting of time.Total power simply by switching is opened or closed, be to turn on giving the ratio of turn-off time compared with
Small time weight mean power.
With the development of soft switch technique, increasingly sophisticated, the Sofe Switch combination technique of new power electronics topological structure
Application the operation mode of converters is continuously increased, quilt in increasing Sofe Switch converters
It was found that.Converters are developed, soft switch transducer circuit is designed early and not only facilitates the safety for ensureing circuit system
Property.Also contribute to improve the topological structure of circuit simultaneously, improve circuit performance.
The content of the invention
It is an object of the invention to the total of the power that consuming components are consumed is controlled and limited by using electronic technology
Measure and to supply the limitation electrical equipment that also can normally use of power limit most even if when total consumed power is more than power supply there is provided a kind of
The power switch control of big electricity suppl power amount, the present invention also aims to provide a kind of maximum electricity suppl work(of limitation electrical equipment
The electrical control method of rate amount.
The object of the present invention is achieved like this：
A kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment, the power supply electric current of electrical equipment is I, electricity
Press as U, maximum power supply available horsepower is P=UI, the electrical equipment overall operation time is T, and consuming components number is N, N >=1, microcontroller
Voluntarily calculate and control power supply to dispense alternating current for consuming components according to the feedback data of control system, N number of switchgear distribution is N number of
Consuming components；The time of the microcontroller switch connection of reponse system is followed successively by T1, T2, T3 ... TN, wherein switch switching is from T1
1 cycle is followed successively by TN, the periodicity of switch switching is K, and TN is the connection total time that n-th is switched；When electrical equipment is in TN
Between section when control n-th switch connection, n-th switch control n-th consuming components work；Described n-th consuming components
Rated power is PN, and the total work of N number of consuming components is WN=P1T1+P2T2+P3T3 ... PNTN, WN≤PT.
Described TN initial time be set as n-th consuming components be in be set as the capable AC electric R cycle and
At the time of voltage is in VR rising edge or trailing edge；TN finish time is set as that n-th consuming components are in and is set as electricity
At the time of source Q cycle of alternating current and voltage are in VQ rising edge or trailing edge, wherein R≤Q.
Described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
Described time TN is the connection total time that n-th is switched, and TN=TN1+TN2+ ...+TNx, wherein x open for n-th
The logical number of times of connection, T >=TN；The power sum for the consuming components that described electrical equipment is run simultaneously is not more than maximum power supply available work
Rate P；Voltage-limiting element and feedback control system are connected with described each consuming components, each voltage-limiting element is each power consumption
Components set is according to the threshold value calculated by feedback when switching connection.
A kind of electrical control method for limiting the maximum electricity suppl power amount of electrical equipment, the power supply electric current of electrical equipment is I, electricity
Press as U, maximum power supply available horsepower is P=UI, the electrical equipment overall operation time is T, consuming components number is N, N >=1, including as follows
Step：
(1) it is consuming components with delivering that microcontroller, which voluntarily calculates and controlled power supply according to the feedback data of control system,
Stream electricity, is that N number of consuming components configure N number of switch；
(2) reponse system microcontroller configuration switch connection time be followed successively by T1, T2, T3 ... TN, wherein switch cut
Change 1 cycle that is followed successively by from T1 to TN, the periodicity of switch switching is K, and TN is the connection total time that n-th is switched；
(3) the control control n-th switch connection when electrical equipment is in the TN periods, n-th switchs control n-th power consumption member
Part works；The rated power of described n-th consuming components is PN, and the total work of N number of consuming components is WN=P1T1+P2T2
+ P3T3 ... PNTN, WN≤PT.
Described TN initial time be set as n-th consuming components be in be set as the capable AC electric R cycle and
At the time of voltage is in VR rising edge or trailing edge；TN finish time is set as that n-th consuming components are in and is set as electricity
At the time of source Q cycle of alternating current and voltage are in VQ rising edge or trailing edge, wherein R≤Q.
Described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
Described time TN is the connection total time that n-th is switched, and TN=TN1+TN2+ ...+TNx, wherein x open for n-th
The logical number of times of connection, T >=TN.
The power sum for the consuming components that described electrical equipment is run simultaneously is not more than maximum power supply available horsepower P.
Voltage-limiting element and feedback control system are connected with described each consuming components, each voltage-limiting element is each
Consuming components setting is according to the threshold value calculated by feedback when switching connection.
Two separate modules, including read-only mode module, data storage mould are provided with described voltage-limiting element
Block, bit error rate detection unit confirms the bit error rate of read-only mode module；Data stick unit, according to the read-only mould of error rate calculation
The data retention time of formula module；Number of times confirmation unit is read, for judging whether the reading number of times of the data storage module is equal to
It is default to read number of times；During pressure limiting, the bit error rate in the read-only mode module is detected, and it is read-only according to the error rate calculation
The data retention time of mode module；Judge whether the reading number of times of the data storage module is equal to default reading number of times；If it is,
Search the threshold voltage corresponding with the data retention time；Data storage module is adjusted according to the threshold voltage found
The threshold voltage of consuming components is saved, the described bit error rate is preset value.The Lifetime of switch and control are all by MCU
(microcontroller, microcontroller) voluntarily calculates what is obtained according to the feedback data of control system.
Two separate modules, including read-only mode module are provided with described voltage-limiting element, voltage-mode is stored
Block, bit error rate detection unit confirms the bit error rate of read-only mode module；Voltage stick unit, according to the read-only mould of error rate calculation
The voltage retention time of formula module；Number of times confirmation unit is read, for judging whether the reading number of times of the storage voltage module is equal to
It is default to read number of times；During pressure limiting, the bit error rate in the read-only mode module is detected, and it is read-only according to the error rate calculation
The voltage retention time of mode module；Judge whether the reading number of times of the storage voltage module is equal to default reading number of times；If it is,
Search the threshold voltage corresponding with the voltage retention time；Storage voltage module is adjusted according to the threshold voltage found
The threshold voltage of consuming components is saved, the described bit error rate is preset value.The Lifetime of switch and control are all by MCU
(microcontroller, microcontroller) voluntarily calculates what is obtained according to the feedback data of control system.
The beneficial effects of the present invention are：
The present invention interior at the same time can operate the electrical equipment consuming components of multiple general powers overloads, and be no more than maximum electric
Source available horsepower；Can be by the present invention using on the element of multiple different rated power, in such case by voltage-limiting element
Under, the independent rated power of heating element heater can even exceed power supply maximal input itself, allow manufacturer to have greatly
Facilitate and further simplify product design.Manufacturer can install the peak power element of in the market needs, and use
Technological invention as described above, is adjusted with electronic device according to the unique mean power in each market.So because a production
Product can be adapted to all markets, enormously simplify its manufacture and stock, reduce production cost.
Brief description of the drawings
Fig. 1 is the power switch control structure chart of the maximum electricity suppl power amount of limitation electrical equipment；
Fig. 2 is the V diagram of embodiment 1；
Fig. 3 is the V diagram of embodiment 2；
Fig. 4 is the V diagram of embodiment 3；
Fig. 5 is the first voltage schematic diagram of embodiment 5；
Fig. 6 is the second voltage schematic diagram of embodiment 5；
Fig. 7 is the tertiary voltage schematic diagram of embodiment 5；
Fig. 8 is the first voltage schematic diagram of embodiment 5；
Fig. 9 is the second voltage schematic diagram of embodiment 6；
Figure 10 is the tertiary voltage schematic diagram of embodiment 7；
Figure 11 is the inventive method schematic diagram.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.
The present invention is to be related to the electron controls technology that electric power is applied, the power consumption electric appliances product such as the water heater that is particularly suitable for use in.
However, the invention is not limited to use on the high-power consuming components of such as water heater, as long as any application is to need control
The electronic circuit that electric power processed is no more than maximum electricity suppl power amount to limit electric current can be used together.At present in limitation electrical equipment
The maximum current for the limitation consuming components (such as heating element heater) that the way of power consumption is typically is used, limit value being equal to or
Electricity suppl power can be used less than maximum.But the present invention is to provide a kind of entirely different limitation power product and method.This
The purpose of invention is the total amount for being controlled and being limited consumed power using electronic technology, even if when total consumed power is more than electricity
Power limit is supplied in source.This is especially real in the case of multiple power cells or multiple heating element heaters for existing in an electrical equipment
.
Present invention firstly provides a kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment, as shown in figure 1,
The power supply electric current of electrical equipment is that I, voltage are U, and maximum power supply available horsepower is P=UI, and the electrical equipment overall operation time is T, consumption
Electric device number is N, and N >=1, microcontroller voluntarily calculates and controlled power supply to be consuming components according to the feedback data of control system
Alternating current is dispensed, is that N number of consuming components configure N number of switch；Reponse system microcontroller switch connection time be followed successively by T1,
T2, T3 ... TN, wherein switch switching is followed successively by 1 cycle from T1 to TN, the periodicity of switch switching is K, and TN switchs for n-th
Connection total time；Control control n-th switch connection when electrical equipment is in the TN periods, n-th switchs control n-th power consumption member
Part works；The rated power of described n-th consuming components is PN, and the total work of N number of consuming components is WN=P1T1+P2T2
+ P3T3 ... PNTN, WN≤PT.TN initial time is set as that n-th consuming components are in and is set as capable AC electricity
At the time of R cycle and voltage are in VR rising edge or trailing edge；TN finish time is set as at n-th consuming components
At the time of the capable AC electric Q cycle is set as and voltage is in VQ rising edge or trailing edge, wherein R≤Q.Time TN
The connection total time switched for n-th, TN=TN1+TN2+ ...+T Nx, wherein x are the number of times that n-th switchs connection, T >=T
N；The power sum for the consuming components that described electrical equipment is run simultaneously is not more than maximum power supply available horsepower P；Described each consumption
Voltage-limiting element and feedback control system are all connected with electric device, each voltage-limiting element is the setting of each consuming components according to by anti-
The threshold value when switching connection is calculated in feedback.
Further described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
Embodiment 1：If an electrical equipment is installed on maximum current I=10A, U=220V power supply.This is equal to maximum
Power supply available horsepower is P=UI=2200W.In order to apart from simple and clear, if two electrical heating elements of this electrical equipment, i.e. N=2,
It under 220V is P1=2200W, P2=2200W that each rated power, which is,.What is thus known better finds out two 2200W original
Part may require that 4400W when working simultaneously, and this is beyond maximum power supply available horsepower.In order to avoid available beyond maximum power supply
Power, can be operated with only one of which heater element in the time.If there is the sine in 12 cycles in the alternating current of power supply
Ripple, first consuming components a cycle 0V trailing edges by switch connection, the 0V trailing edges of second period are by switching
Disconnect；Second consuming components second period 0V trailing edges by switch connection, the 0V trailing edges in the 7th cycle are by opening
Shut-off is opened；Then first consuming components in the 0V trailing edges in the 7th cycle under switch connection, the 0V in the 12nd cycle
Drop is along by switching off, as shown in Fig. 2 using the invention, can quickly switch on and off very much two elements.Work as alternating current
When the sine wave of pressure is by 0V, it can individually trigger power on or the disconnection of any one heater element.Fig. 2 depicts list
Solely it is applied to the voltage of each heating element heater so that two heating element heaters provide the work(of element overall 50% independently of one another.
When each element switches, it is actually with 100% Power operation, however, because interlock turn-on time and time weight are average
Value, each element is simply averagely run with 50% total work, altogether 100% power, it is ensured that the safe operation of power supply.In 0V electricity
Pressure carry out switch switching technology, we in the present invention Uniform Name be no-voltage (0V) switch.
Embodiment 2：As shown in figure 3, it is identical with the mode that embodiment 1 is run, but pass through first yuan of the control of the present invention
Part connects 10% power, and second heatiing element connects 90% power.The power supply peak power of guarantee 100% so again is not
It is exceeded.
Embodiment 3：As shown in figure 4, this controlling switch can more become according to electrical equipment demand, as shown first and second
Heat-generating pipe only needs to 10% power of each connection.
By above-described embodiment, and the description of this invention, being familiar with electronically controlled those skilled in the art can be with bright
, such switch, which switches, can make element power equal to the element of source nominal power with 0% to 100% any work(
Rate ratio, as long as combined power is no more than 100%, and N number of element can be carried out parallelism to two elements by connection at the same time.
Certainly, switch of the invention is also applied for multiple combination and permutation of the multiple element in different capacity rated value.
Embodiment 4：If using three elements, wherein element 1 and element 2 is each rated for 1100W, and element 3 is rated for
2200W, then be also turned on simultaneously element 1 and 2, and disconnects element 3 to be kept for no more power supply peak power.This patent
All such combination and permutation of covering.
Although with the very efficient same time control multiple element of ZVT, this is also defective.Each element,
Such as heater element can only be complete connection or complete disconnection, be that the temporal distribution of a cycle determines that power is " average
Value ".This mean two heating elements by maximum rated general power limited can not simultaneously between connect, just at last in the short time
Also it is infeasible.
In order to solve defect presented above, another switching switch can be used, this switching switch utilizes electronics
(no matter voltage is just or negative to device, or voltage is the rate of rise or descending slope in sine wave under specific voltage
On) open and close power supply.
Embodiment 5：If an electrical equipment is built with two heating elements, it under 220V is 2200W that each rated power, which is,.Typical case hands over
The sinusoidal pattern of power supply is flowed as shown in figure 5, if we want to the power of element is reduced into 75%, can use such as Fig. 6 institutes
The switching method shown carrys out control input voltage.This will influence average voltage, i.e. TN=TN1+TN2+ ...+T Nx, by by individually
The run time segmentation influence mean power of consuming components.Power will be reduced to 25% with Fig. 7 input voltage.
Embodiment 6：Further, we are connected with voltage-limiting element on described each consuming components, each
Voltage-limiting element is that each consuming components set microcontroller voluntarily being connected in switch according to the calculating of the feedback data of control system
When threshold value.Using this switch, maximum voltage can be limited, so as to prevent the power of excessive rated power device from exceeding power supply
Maximum current.As shown in figure 8, further iteration also allows multiple element at circulation phase difference, or it is simultaneously indirect
On and off is opened, as shown in Figure 9.It can also each connect but be disconnected at difference while the phase of circulation, such as Figure 10 shows.This is
Electrical equipment provides great flexibility, so that any point during the cycle provides correct power for each element.Condition is
The general power of combination can not be allowed to exceed power supply maximum available power.
Yet another advantage of the present invention is that allowing manufacturer to have great convenience and simplifying product design.Manufacturer can be with
The peak power element that in the market needs, such as heater element are installed, and use technology as described above, electronic device root is used
Adjusted according to the unique mean power in each market.Which greatly simplifies its manufacture and stock, production cost is reduced, because one
Individual product can be adapted to all markets.
By the further refinement and summary of the switch designed the present invention, it is maximum that inventor summarizes a kind of limitation electrical equipment
The electrical control method of electricity suppl power amount, as shown in figure 11, the power supply electric current of wherein electrical equipment are that I, voltage are U, most
Big power supply available horsepower is P=UI, and the electrical equipment overall operation time is T, and consuming components number is N, and N >=1 comprises the following steps：
(1) it is consuming components with delivering that microcontroller, which voluntarily calculates and controlled power supply according to the feedback data of control system,
Stream electricity, is that N number of consuming components configure N number of switch；
(2) reponse system microcontroller configuration switch connection time be followed successively by T1, T2, T3 ... TN, wherein switch cut
Change 1 cycle that is followed successively by from T1 to TN, the periodicity of switch switching is K, and TN is the connection total time that n-th is switched；
(3) the control n-th switch connection when electrical equipment is in the TN periods, n-th switch controls n-th consuming components work
Make；The rated power of described n-th consuming components is PN, and the total work of N number of consuming components is WN=P1T1+P2T2+
P3T3 ... PNTN, WN≤PT；Described TN initial time is set as that n-th consuming components are in and is set as that power supply is handed over
At the time of flowing electric R cycle and voltage and be in VR rising edge or trailing edge；TN finish time is set as n-th power consumption member
Part, which is in, is set as the capable AC electric Q cycle and at the time of rising edge or trailing edge of the voltage in VQ, wherein R≤Q.Institute
The time TN stated is the connection total time that n-th is switched, and TN=TN1+TN2+ ...+T Nx, wherein x are that n-th switchs connection
Number of times, T >=T N.The power sum for the consuming components that described electrical equipment is run simultaneously is not more than maximum power supply available horsepower P.Institute
Voltage-limiting element and feedback control system are connected with each consuming components stated, each voltage-limiting element is that each consuming components are set
It is fixed to switch threshold value when connecting according to by feeding back to calculate.
Further, described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
Optimum embodiment：
The optimum embodiment implemented with this method is given below：
One electrical equipment with two electrical heating elements.Each electrical heating elements is 2200W power.2200W be from
The peak power that one 220V voltage and maximum current 10A power supplys power supply are drawn.So generally only one of which 2200W power plus
Thermal element can be allowed to install.However, we install two heating element heaters in this electrical equipment, each respectively 2200W.This
It is meant that always combine the limit that peak power is twice, i.e. 4400W, generally this is impossible realization.The invention provides
One unique control method, allows being opened and closed in different time for heating element heater independence in the time of needs.Exchange is defeated
Enter the basis occurred as switch.In 50Hz frequencies, alternating current sine wave passes through 0V 100 times per second, is 50 cycles.0V is switched
Refer to that heater element is always switched on and off when voltage crosses zero volt line.Two heating elements are referred to as element by us
E1 and element E2.The purpose of the two heater elements is to provide the heat of two different aspects, and keeps these two aspects to the greatest extent may be used
Can be close to set temperature spot.Temperature spot is referred to as T by us1And T2, design temperature point is as SPT1And SPT2.The equipment is
With E1 and E2, by T1It is heated and maintained at SPT1, by T2It is heated and maintained at SPT2。
In equipment using process, T1And T2Temperature can each change in different speed and different time.In order to
Management control system, we are by E1, T1And STP1Energy distribution accord priority, in E2, T2And STP2On energy distribution.
What this method was designed so as to, work as T1Less than SPT1, equipment is available horsepower 100% applied on E1, and E2 obtains 0% electric power should
With.Work as T1Close to STP1When, the power that E1 is assigned to is reduced by disconnecting the alternating current sine wave in several cycles.Work as T1More connect
Nearly STP1When, the E1 sine wave period number being disconnected can increase with it is elongated.At this moment the periodicity that E1 disconnects is used for providing power
To E2, make T2Close to SPT2。
Therefore, E2 available horsepower is (E2=100% power-E1 uses power %).This logic is continued until T1
=SPT1 and T2=SPT2.Hereafter, E1 and E2 power only has short pulse to meet and keep the temperature of respective set point, E1
With E2 curves be in different ac cycles and different time, so as to never have two heating elements when same it is indirect
It is logical.
It should be noted that this switch on and off is that can occur the speed at 100 times per second, so the second heating unit
Part is possible to be connected within the time of 10 milliseconds (1% power) to 1 second (100% power).If two heating element heaters all exist
50% Power operation, then 50Hz sine waves, E1 can be connected in 25 cycles above, and this is 500 milliseconds of time, then
E2 can be connected in ensuing 25 cycle, be also time-consuming 500 milliseconds.Same ratio can be 75%25% or 100%
0%, as long as merging power is no more than 100%.When T1 and T2 is equal to SPT1 and SPT2, E1 and E2 receive 0%.When T1 and T2 is omited
There is decline, E1 and E2 may receive 10% power, it means that each heating element heater can be connected for 5 week within 50 cycles
Phase.The two connections must still occur in different times in the different cycle, to ensure that instantaneous power is no more than 100%.
Further, two separate modules, including read-only mode module are provided with described voltage-limiting element, is deposited
Storing up electricity die block, bit error rate detection unit confirms the bit error rate of read-only mode module；Voltage stick unit, according to bit error rate meter
Calculate the voltage retention time of read-only mode module；Number of times confirmation unit is read, the reading number of times for judging the storage voltage module
Whether default reading number of times is equal to；During pressure limiting, the bit error rate in the read-only mode module is detected, and according to the error rate calculation
The voltage retention time of the read-only mode module；Judge whether the reading number of times of the storage voltage module is equal to default reading time
Number；If it is, searching the threshold voltage corresponding with the voltage retention time；Voltage module is stored according to the door found
Voltage limit value adjusts the threshold voltage of consuming components, and the described bit error rate is preset value.The present invention switch Lifetime and
Control is all voluntarily to be calculated to obtain according to the feedback data of control system by MCU (microcontroller, microcontroller).
Although the present invention is illustrated by specific embodiment, it will be appreciated by those skilled in the art that, do not departing from
In the case of the scope of the invention, various conversion and equivalent substitute can also be carried out to the present invention.Therefore, the present invention is not limited to institute
Disclosed specific embodiment, and whole embodiments for falling within the scope of the appended claims should be included.
Claims (8)
1. a kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment, the power supply electric current of electrical equipment is I, voltage
For U, maximum power supply available horsepower is P=UI, and the electrical equipment overall operation time is T, and consuming components number is N, N >=1, microcontroller from
Row calculates and controlled power supply to dispense alternating current for consuming components according to the feedback data of control system, it is characterised in that：To be N number of
Consuming components configure N number of switch；Reponse system microcontroller switch connection time be followed successively by T1, T2, T3 ... TN, wherein opening
Concern is changed 1 cycle that is followed successively by from T1 to TN, and the periodicity of switch switching is K, and TN is the connection total time that n-th is switched；Electricity
Control n-th switch connection when device is in the TN periods, n-th switch controls the work of n-th consuming components；Described n-th
The rated power of consuming components is PN, and the total work of N number of consuming components is WN=P1T1+P2T2+P3T3 ... PNTN, WN
≤P·T。
2. a kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment according to claim 1, its feature
It is：Described TN initial time is set as that n-th consuming components are in and is set as capable AC electric R cycle and voltage
At the time of rising edge or trailing edge in VR；TN finish time is set as that n-th consuming components are in and is set as that power supply is handed over
At the time of flowing electric Q cycle and voltage and be in VQ rising edge or trailing edge, wherein R≤Q.
3. a kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment according to claim 1, its feature
It is：The connection total time that described time TN switchs for the microcontroller of n-th reponse system, TN=TN1+TN2+ ...+
TNx, wherein x are the number of times that n-th switchs connection, T >=TN；The power sum for the consuming components that described electrical equipment is run simultaneously is not
More than maximum power supply available horsepower P；Feedback control system and voltage-limiting element are connected with described each consuming components, each
Voltage-limiting element is set according to the threshold value calculated by feedback when switching connection by each consuming components.
4. a kind of power switch control for limiting the maximum electricity suppl power amount of electrical equipment according to claim 1, its feature
It is：Described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
5. a kind of electrical control method for limiting the maximum electricity suppl power amount of electrical equipment, the power supply electric current of electrical equipment is I, voltage
For U, maximum power supply available horsepower is P=UI, and the electrical equipment overall operation time is T, and consuming components number is N, and N >=1, its feature exists
In：Comprise the following steps：
(1) microcontroller voluntarily calculates according to the feedback data of control system and controls power supply to be exchanged for consuming components dispatching
Electricity, is that N number of consuming components configure N number of switch；
(2) reponse system microcontroller configuration switch connection time be followed successively by T1, T2, T3 ... TN, wherein switch switching from
T1 to TN is followed successively by 1 cycle, and the periodicity of switch switching is K, and TN is the connection total time that n-th is switched；
(3) the control control n-th switch connection when electrical equipment is in the TN periods, n-th switchs control n-th consuming components work
Make；The rated power of described n-th consuming components is PN, and the total work of N number of consuming components is WN=P1T1+P2T2+
P3T3 ... PNTN, WN≤PT.
6. a kind of electrical control method for limiting the maximum electricity suppl power amount of electrical equipment according to claim 5, its feature
It is：Described TN initial time is set as that n-th consuming components are in and is set as capable AC electric R cycle and voltage
At the time of rising edge or trailing edge in VR；TN finish time is set as that n-th consuming components are in and is set as that power supply is handed over
At the time of flowing electric Q cycle and voltage and be in VQ rising edge or trailing edge, wherein R≤Q；Described time TN is n-th
The connection total time of switch, TN=TN1+TN2+ ...+T Nx, wherein x are the number of times that n-th switchs connection, T >=TN；Described
The power sum for the consuming components that electrical equipment is run simultaneously is not more than maximum power supply available horsepower P；On described each consuming components
Voltage-limiting element and feedback control system are all connected with, each voltage-limiting element is set by each consuming components and calculated according to by feedback
Out switching threshold value when connecting.
7. a kind of electrical control method for limiting the maximum electricity suppl power amount of electrical equipment according to claim 5, its feature
It is：Described TN initial time and finish time are that the sine wave of alternating voltage passes through the 0V moment.
8. a kind of electrical control method for limiting the maximum electricity suppl power amount of electrical equipment according to claim 5, its feature
It is：Two separate modules, including read-only mode module are provided with described voltage-limiting element, voltage module is stored,
Bit error rate detection unit, confirms the bit error rate of read-only mode module；Voltage stick unit, according to error rate calculation reading mode mould
The voltage retention time of block；Number of times confirmation unit is read, for judging it is default whether the reading number of times of the storage voltage module is equal to
Read number of times；During pressure limiting, the bit error rate in the read-only mode module, and a reading mode according to the error rate calculation are detected
The voltage retention time of module；Judge whether the reading number of times of the storage voltage module is equal to default reading number of times；If it is, searching
The threshold voltage corresponding with the voltage retention time；Storage voltage module is adjusted according to the threshold voltage found to be consumed
The threshold voltage of electric device, the described bit error rate is preset value；The Lifetime of switch and control be all by MCU microcontrollers from
Row calculates what is obtained according to the feedback data of control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710383094.9A CN107134775A (en) | 2017-05-26 | 2017-05-26 | A kind of power switch control and its control method for limiting the maximum electricity suppl power amount of electrical equipment |
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| CN201710383094.9A CN107134775A (en) | 2017-05-26 | 2017-05-26 | A kind of power switch control and its control method for limiting the maximum electricity suppl power amount of electrical equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110737317A (en) * | 2018-07-20 | 2020-01-31 | 茂达电子股份有限公司 | Phase shift control circuit for multi-channel system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430595A (en) * | 2007-11-08 | 2009-05-13 | 国际商业机器公司 | Power-restricted power management electronic system |
| WO2016062574A1 (en) * | 2014-10-24 | 2016-04-28 | Philips Lighting Holding B.V. | Controlling power usage in appliances |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430595A (en) * | 2007-11-08 | 2009-05-13 | 国际商业机器公司 | Power-restricted power management electronic system |
| WO2016062574A1 (en) * | 2014-10-24 | 2016-04-28 | Philips Lighting Holding B.V. | Controlling power usage in appliances |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110737317A (en) * | 2018-07-20 | 2020-01-31 | 茂达电子股份有限公司 | Phase shift control circuit for multi-channel system |
| CN110737317B (en) * | 2018-07-20 | 2022-01-28 | 茂达电子股份有限公司 | Phase shift control circuit for multi-channel system |
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Application publication date: 20170905 |