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WO2004070935A1 - Ensemble de generation de courant - Google Patents

Ensemble de generation de courant Download PDF

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Publication number
WO2004070935A1
WO2004070935A1 PCT/JP2004/001243 JP2004001243W WO2004070935A1 WO 2004070935 A1 WO2004070935 A1 WO 2004070935A1 JP 2004001243 W JP2004001243 W JP 2004001243W WO 2004070935 A1 WO2004070935 A1 WO 2004070935A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic pump
valve
pump motor
oil
oil passage
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/JP2004/001243
Other languages
English (en)
Japanese (ja)
Inventor
Shigeru Suzuki
Atsushi Yoshida
Hiroshi Otsuka
Sumiko Seki
Takahiko Itoh
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.)
Tamura Electric Works Ltd
Saxa Inc
Yukigaya Institute Co Ltd
Original Assignee
Tamura Electric Works Ltd
Saxa Inc
Yukigaya Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tamura Electric Works Ltd, Saxa Inc, Yukigaya Institute Co Ltd filed Critical Tamura Electric Works Ltd
Publication of WO2004070935A1 publication Critical patent/WO2004070935A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04—Automatic control; Regulation
    • F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/406—Transmission of power through hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1033—Power (if explicitly mentioned)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • a main object of the present invention is to provide a power generation facility capable of performing stable output irrespective of a change in external force without using power storage means such as a storage battery. .
  • a power generation facility is characterized in that power generation is performed simply using a differential type generator.
  • the differential generator not only the first armature, which is generally called a rotor, but also the second armature, which is generally a stator, is rotatable.
  • the present invention relates to a rotating body which is driven to rotate by receiving an external force and has a required amount of inertia, and a rotary type which is driven by rotation of the rotating body to generate oil power.
  • Hydraulic pump a first hydraulic pump motor rotatably driven by the hydraulic power generated by the hydraulic pump, and a first hydraulic pump motor rotatably driven by the hydraulic power generated by rotating the first hydraulic pump motor
  • a second hydraulic pump motor a first rotor connected to the rotation axis of the first hydraulic pump motor, and a connection to the rotation axis of the second hydraulic pump motor on the same axis as the first rotor.
  • a generator that generates electric power by rotation of the first and second rotors, and a first rotation number detector that detects the number of rotations of the first rotor Means, and second rotation number detecting means for detecting the rotation number of the second rotor
  • a first hydraulic pump for maintaining a rotational speed difference between the first rotor and the second rotor within a predetermined range based on a detection result of the first and second rotational speed detecting means;
  • the present invention is directed to a power generation facility including a motor and oil power control means for controlling oil power to a second hydraulic pump motor.
  • the relative rotation speed between the first and second rotors in the differential generator can be maintained within a predetermined range, and the frequency of the output power is maintained within a required range. be able to.
  • the second hydraulic pump motor rotates not only by the oil power generated by rotating the first hydraulic pump motor but also by the oil power generated by the hydraulic pump. Preferably, it is driven. Similarly, it is preferable that the first hydraulic pump motor is also driven to rotate by the hydraulic power generated by the second hydraulic pump motor.
  • the oil power control means includes a first oil passage connected from an outflow port of the hydraulic pump to an inflow port of the first hydraulic pump motor, and a second oil passage connected to the first oil passage.
  • 1 accumulator a first unload oil passage branching from a first branch point in a first oil passage between the hydraulic pump and the first accumulator, and a first unload oil passage
  • a first on-off valve interposed between the first accumulator and the first unload oil interposed in a first oil passage between the first branch point and the first accumulator.
  • a first valve for blocking a flow to the passage a second on-off valve provided in the first oil passage between the first accumulator and the first hydraulic pump motor, and a second valve
  • the on-off valve When the on-off valve is closed, hydraulic oil can flow into the inflow port of the first hydraulic pump motor, and
  • the oil power control means includes a first hydraulic pump motor, a flywheel connected to a rotating shaft thereof, and a second hydraulic pump motor having an inflow port and an outflow port. If it is a bidirectional type with two inflow / outflow ports
  • a second hydraulic passage connected from the outflow port of the first hydraulic pump motor to one of the inflow / outflow ports of the second hydraulic pump motor, and a second accumulator connected to the second hydraulic passage.
  • a second unload oil passage branching from a second branch point in the second oil passage between the first hydraulic pump motor and the second accumulator, and a second unload oil passage.
  • a third valve for preventing flow a fourth on-off valve interposed in the second oil passage between the second accumulator and the second hydraulic pump motor, and a fourth on-off valve
  • the hydraulic oil flows into the one inflow / outflow port of the second hydraulic pump motor.
  • a fourth valve that can enter and prevent the hydraulic oil in the second oil passage on the inflow / outflow port side from flowing out, and is connected to the other inflow / outflow port of the second hydraulic pump motor. It is preferable to provide a third oil passage through which hydraulic oil can flow into and out of the other inflow / outflow port.
  • the valve control means controls the third on-off valve and the fourth on-off valve.
  • the magnitude of the oil power to the second hydraulic pump motor is adjusted by the on / off switching control of the third and fourth on / off valves, and the rotating shaft of the second hydraulic pump motor is controlled. Can be controlled.
  • the oil power control means includes a third unload oil passage connected to one of the inflow / outflow ports of the second hydraulic pump motor, and an oil power control means interposed in the third unload oil passage. And a fifth on-off valve controlled by a valve control means.
  • the oil power control means is provided in the third unloading oil passage downstream of the fifth on-off valve, and is controlled by the valve control means.
  • a fourth oil passage branched from a third unload oil passage between the first and second accumulators and the second on-off valve, and a fourth oil passage connected to the first oil passage between the first accumulator and the second on-off valve.
  • a fifth valve interposed in the fourth oil passage for preventing a flow from the first accumulator to the sixth on-off valve.
  • the oil power control means branches off from the first oil passage between the first accumulator and the second opening / closing valve, and the fourth on / off valve and the second hydraulic pump mode.
  • a fifth oil passage connected to the second oil passage between the first oil passage and the second oil passage, and a seventh opening / closing valve interposed in the fifth oil passage and controlled by valve control means.
  • the rotation of the second hydraulic pump motor can be adjusted by the oil power of the hydraulic pump. This is effective because the oil power of the hydraulic pump can be used when the rotation speed of the first hydraulic pump motor is low at start-up and the like and the oil power therefrom is small.
  • the rotating body is a windmill.
  • the type of generator is not limited, including AC induction type, AC synchronous type, and DC type.
  • FIG. 1 is a schematic explanatory diagram showing an embodiment of a power generation facility to which the present invention is applied.
  • FIG. 2 is a partial cross-sectional view showing a configuration of a generator used in the power generation equipment of FIG. 1 and its peripheral elements.
  • FIG. 3 is a timing chart showing the operation of the power generation facility of FIG.
  • FIG. 4A is a basic hydraulic circuit diagram of the power generation equipment according to the present invention.
  • FIG. 4B is an electric circuit diagram equivalent to the hydraulic circuit diagram of FIG. 4A.
  • FIG. 5 is a timing chart showing the operation of the power generation equipment of FIG. 1 when the wind power changes significantly.
  • FIGS. 6A to 6F are diagrams showing the energy flows at each of a plurality of time points shown in FIG.
  • FIG. 7 is a schematic explanatory diagram similar to FIG. 1, but illustrating another embodiment of the present invention.
  • FIG. 1 is a schematic explanatory diagram showing a power generation facility 10 according to the present invention.
  • the power generation facility 10 according to the illustrated embodiment is for wind power generation, and a propeller-type wind turbine 12 is used.
  • the power generation equipment 10 according to the present invention basically converts the mechanical power generated when the windmill 12 rotates by receiving an external force, that is, wind, into oil power, and then converts the oil power into oil power. It is intended to return to mechanical power again to rotate the rotating shaft of the generator 14. Therefore, the illustrated power generation equipment 10 includes a hydraulic pump 16 that converts mechanical power into hydraulic power and a hydraulic pump motor (first hydraulic pump motor) 18 that converts hydraulic power into mechanical power.
  • the device 20 is provided.
  • the generator 14 is called a differential type.
  • the hydraulic pump 16 is a fixed displacement, one-way rotary type.
  • the hydraulic pump 16 when hydraulic oil is forcibly supplied to the inflow port 22, the hydraulic pump 16 can also function as a motor.
  • a hydraulic pump motor is used as the hydraulic pump 16.
  • the rotating shaft 24 of the hydraulic pump 16 is connected to the rotating shaft of the windmill 12.
  • the rotating shaft 24 is rotatably supported by a bearing (not shown) provided in the nacelle 30, and the hydraulic pump 16 is disposed in the nacelle 30.
  • the nacelle 30 is a box rotatably supported on the upper part of a pillar 32 standing on the ground or the like.
  • the inflow port 22 of the hydraulic pump 16 communicates with an oil tank 36 provided in the nacelle 30 via an oil passage 34.
  • the oil passage 34 is provided with a check valve 38 for preventing hydraulic oil from flowing back from the hydraulic pump 16 to the oil tank 36.
  • the hydraulic pump motor 18 is a fixed displacement, one-way rotating type, and the rotating shaft 42 rotates and the rotating shaft 42 rotates by sending hydraulic oil from the inflow port 40. This allows hydraulic oil to be sucked in from the inflow port 40 and hydraulic oil to be discharged from the outflow port 44.
  • An oil passage (first oil passage) 52 extending from the outflow port 50 of the hydraulic pump 16 is connected to the inflow port 40 of the hydraulic pump motor 18.
  • An electromagnetic open / close valve (first open / close valve) 56 is interposed in the unload oil passage 54.
  • the unload oil passage 54 and the on-off valve 56 are arranged in the nacelle 30.
  • the on-off valve 56 is controlled to open and close by a control signal from a control device (valve control means) 58.
  • a check valve (first valve) 6 2 is provided in the oil passage 52 in order from the branch point (first branch point) 60 of the unloading oil passage 54 to the downstream side.
  • Check valve 62 blocks the flow of hydraulic oil from accumulator 64 to unloading oil passage 54
  • the accumulator 64 can receive the hydraulic oil pumped from the hydraulic pump 16 and accumulate the pressure up to a predetermined pressure.
  • the on-off valve 66 is of an electromagnetic type, and is controlled to be opened and closed by the control device 58 described above.
  • the rotary shaft 42 of the hydraulic pump motor 18 is coaxially connected to the flywheel 74.
  • the flywheel 74 is also referred to as a flywheel.
  • the flywheel 74 When the flywheel 74 is rotated by the drive of the hydraulic pump motor 18, the flywheel 74 continues to rotate by inertia even after the oil power to the hydraulic pump motor 18 is cut off. The rotation of the rotating shaft 42 can be continued.
  • the rotating shaft 76 of the flywheel 74 is further connected to the inner rotor (first rotor) 78 of the generator 14, and therefore the inner rotor 7 of the generator 14
  • Numeral 8 is integrally rotatable with the rotary shaft 42 of the hydraulic pump motor 18.
  • the generator 14 will be described in detail.
  • the generator 14 includes an inner rotor 78 and an outer rotor (second rotor) 80 that coaxially surrounds the inner rotor 78. ing.
  • the outer rotor 80 is provided in a casing 82 of the generator 14. Both ends of the casing 82 are rotatably supported by bearings 84, 85, whereby the outer rotor 80 is rotatable.
  • a general generator has a fixed casing, and the generator 14 of this embodiment differs from the general generator in this point.
  • the inner rotor 78 is rotatably supported by bearings 86, 87 at both ends of the casing 82.
  • the coil constituting the inner rotor 78 is connected to a DC excitation power supply via a slip ring 88.
  • the DC excitation power supply includes a rectifier circuit 90 for rectifying three-phase AC and a control circuit 92 for adjusting the excitation DC current and voltage.
  • a DC current is supplied from the DC excitation power supply to the coil of the inner rotor 78, the inner rotor 78 forms a magnetic field.
  • the outer rotor 80 is provided with, for example, a star connection or a delta connection so that three-phase AC power can be generated when the exciting inner rotor 78 rotates with respect to the outer rotor 80.
  • the three output terminals are connected to a transformer 96 via a slip ring 94, and the AC generated from the transformer 96 to the external power system is output It has become.
  • One end of the casing 82 provided with the outer rotor 80 is provided with a bidirectionally rotatable hydraulic pump motor (second hydraulic pump motor) 100 at the one end thereof.
  • second hydraulic pump motor second hydraulic pump motor
  • the hydraulic pump motor 100 is arranged coaxially with the generator 14, and its rotating shaft 102 has an inner shaft of the inner rotor 78. It has a hollow cylindrical shape so that 104 can penetrate it.
  • An oil passage (third oil passage) 108 from one inflow / outflow port 106 of this hydraulic pump motor 100 is connected to an oil tank 68, and is connected to the other inflow / outflow port 110.
  • a check valve (third valve) 120 there are a check valve (third valve) 120, an accumulator (second accumulator) 122, an on-off valve (fourth on-off valve) 124, and a check valve (fourth valve) 126.
  • An oil passage 128 is provided.
  • an unload oil passage (third unload oil) is connected to the oil tank 68. Road) 1 32 branches.
  • An on-off valve (fifth on-off valve) 134 and an on-off valve (sixth on-off valve) 136 downstream thereof are interposed in the unloading oil passage 132.
  • an oil passage (fourth oil passage) 138 extends from between the on-off valves 134 and 136, and is connected to the oil passage 52 between the on-off valve 66 and the accumulator 64.
  • the oil passage 138 is provided with a check valve (fifth valve) 140 for preventing the flow of hydraulic oil from the oil passage 52 to the oil passage 132.
  • an oil passage 142 branches off from an oil passage 112 between the accumulator 122 and the on-off valve 124.
  • the oil passage 142 is connected to the inflow port 22 of the hydraulic pump 16. It is connected to the.
  • An on-off valve 144 is interposed in the oil passage 142.
  • the stop valve 120, the accumulator 122, the on-off valve 144, the check valve 38, the oil passage 34, and the hydraulic pump 16 are respectively the hydraulic pump 16 for the oil passage 52, the on-off valve 56, the unload oil passage 54, and the reverse.
  • the on-off valves 1 16, 124, 134, 136, 144 are of an electromagnetic type and are controlled by the control device 58.
  • the control device 58 includes a hydraulic pump 16, a hydraulic pump motor 18 and
  • the rotation speed sensors (rotation speed detecting means) 150, 152, 154 provided on each of the rotating shafts 24, 42, 102 of the hydraulic pump motor 100, and the pressures of the accumulators 64, 122 are respectively measured. Pressure sensors 156 and 158 for detection are connected. Further, a wind speed sensor 160 is connected to the control device 58. The control device 58 controls the on-off valves 56, 66, 116, 124, 134, 136 and 144 based on signals from these sensors 150 to 160.
  • the wind changes as follows. That is, first, from the no-wind state, the second wind speed exceeding the rated wind speed (first wind speed) and having large energy generated by the generator 14 continues for a certain period of time, and then further exceeds the second wind speed. After the wind speed reaches the third wind speed and lasts for a certain period of time at that wind speed, the wind speed becomes the fourth wind speed, which is lower than the rated wind speed, and finally becomes the first wind speed, and the state continues.
  • the rated frequency for example, 50 Hz
  • Power having a frequency of can be output to an external power system.
  • the oil tanks 36 and 68 and all oil paths are sufficiently filled with hydraulic oil.
  • the energy consumed to supply the hydraulic oil to the oil tank 36 in the nacelle 30 is the positional energy (position head) when flowing from the oil tank 36 to the oil tank 68. In principle, there is no loss.
  • the control device 58 monitors the rotation speed of the rotation shaft 24 of the hydraulic pump 16 from the rotation speed sensor 150 and the wind speed from the wind speed sensor 160, Is the second wind speed, and the optimum rotation speed of the rotating shaft 24 of the hydraulic pump 16 (accordingly, the rotation speed at the optimum peripheral speed ratio of the wind turbine 12) is calculated and obtained according to the second wind speed. . Then, switching control of opening / closing of the on-off valve 56 is performed so as to obtain the optimum rotation speed (1 ⁇ to 1: 2 in FIG. 3).
  • the on-off valve 5 6 is initially open when the windmill 12 starts rotating, but when it exceeds the optimum rotation speed obtained from the wind speed and the optimum peripheral speed ratio, it is instantaneously switched to the closed state,
  • the hydraulic oil from the pump 16 is supplied downstream of the check valve 62. Aki at this time
  • the rotation speed of the hydraulic pump 16 and, consequently, the rotation speed of the wind turbine 12 can be adjusted to the rotation speed of the optimum peripheral speed ratio.
  • Hydraulic oil flows from the hydraulic pump motor 18 to the hydraulic pump motor 18, and the rotary shaft 42 of the hydraulic pump motor 18 starts rotating and is gradually accelerated (t 2 to t 3 in FIG. 3 ).
  • the hydraulic oil that has passed through the hydraulic pump motor 18 flows into the oil tank 68 through the unloading oil passage 118 and the open / close valve 116 that is open.
  • control device 58 opens and closes the valve 6 based on the signal from the rotation speed sensor 15 2. 6 starts switching control of the opening and closing of (t 4 ⁇ t 5 in FIG. 3).
  • the opening / closing switching control of the opening / closing valve 66 is performed to maintain the rotation speed of the rotary shaft 42 of the hydraulic pump motor 18 within the allowable range of the power generation frequency of the generator 14. Things. That is, by switching the on-off valve 66 from the open state to the closed state, the supply of hydraulic oil from the accumulator 64 side to the hydraulic pump motor 18 is cut off, and the rotation of the rotary shaft 42 of the hydraulic pump motor 18 The number is reduced. At this time, the hydraulic pump motor 18 continues to rotate due to the inertia of the flywheel 74, and the hydraulic oil is supplied from the oil tank 68 to the hydraulic pump motor 18 through the oil passage 70 and the check valve 72. .
  • the accumulator 64 stores pressure by closing the on-off valve 66 together with the on-off switching of the on-off valve 56.
  • the rotation speed of the rotating shaft 42 is maintained within a desired range, and the generator 14 is stopped when the inner rotor 78 is stopped. Since the rotor rotates at 150 rpm with respect to a certain outer rotor 80, stable power generation is performed.
  • the Tsuchingu control is performed as in the case between the timing t ⁇ t 2 (t 6 ⁇ t 7 in FIG. 3). At this time, since the energy of the wind is sufficiently larger than the energy of the power generation, a large surplus is accumulated in the accumulator 64.
  • the rotation speed of the rotary shaft 42 of the hydraulic pump motor 18 becomes 1500 rpm. reached though because, if it be between time t 6 ⁇ t 7 is opened and closed switching control of the switching valve 5 6, 6 6 continues, the pressure in the accumulator 6 4 is rising, closed on-off valve 6 6 The interval between the open state and the closed state (open time) is shortened.
  • the control device 58 closes the opening / closing valve 56 to reduce the rotation speed of the rotary shaft 24 of the hydraulic pump 16 to the wind speed. Braking to a suitable speed. At that time, the braking energy is stored in the accumulator as energy. (T 7 ⁇ t 8 in FIG. 3).
  • the generator 14 maintains the rated power generation by using the energy collected at the second and third wind speeds higher than the rated wind speed and stored in the accumulator 64.
  • the control device 58 opens the on-off valve 56 and adjusts the rotation speed of the rotary shaft 24 of the hydraulic pump 16 to the wind speed. It is accelerated to the rotational speed (t 9 onward in FIG. 3).
  • the rotation axis 42 of the hydraulic pump motor 18, that is, the rotation of the inner rotor 78 of the generator 14 is kept constant, Irrespective of changes in the power generation, stable power generation can be achieved.
  • a hydraulic transmission using an expensive variable displacement hydraulic pump motor has been considered in order to achieve the same purpose by a hydraulic circuit.
  • the present invention provides an inexpensive fixed displacement hydraulic pump. Excellent effects can be obtained with the hydraulic pump motor 16 and the hydraulic pump motor 16.
  • FIG. 4A is a simplified representation of the circuit of the above-described portion of the hydraulic device 20.
  • Fig. 4B shows the hydraulic circuit of Fig. 4A as an equivalent electric circuit (current source circuit).
  • I I is a current source
  • R 1 is a load
  • C 1 is a capacitor
  • S 1 and S 2 are switching elements such as transistors
  • D 1 and D 2 are rectifiers
  • L 1 and L 2 are inductors.
  • the current source I 1 corresponds to the hydraulic pump 16 and the load R 1 corresponds to the hydraulic pump motor 18.
  • Capacitor C 1 is accumulator 64.
  • Switching elements S 1 and S 2 correspond to on-off valves 56 and 66, respectively, and rectifiers D 1 and D 2 correspond to check valves 62 and 72, respectively.
  • the inductor L 1 corresponds to the inertia of the hydraulic pump 16 system
  • L 2 corresponds to the inertia of the flywheel 74.
  • the electric circuit shown in FIG. 4B is known as a switching power control circuit or a power regulator circuit, and adjusts the switching frequency and the pulse width of the switching elements S 1 and S 2. Thus, the voltage of the load R1 can be adjusted.
  • the hydraulic circuit shown in FIG. 4B which is equivalent to the electric circuit shown in FIG. 4B, also has the same effect, and is equivalent to the load R1 by controlling the switching of the on-off valves 66, 56. It will be appreciated that the rotational speed of the rotary shaft 42 of the hydraulic pump motor 18 can be adjusted to be maintained within a certain range. [0714]
  • the hydraulic circuit from the hydraulic pump motor 18 to the hydraulic pump 16 via the oil passages 112, 142 corresponds to the hydraulic circuit in FIG. 4A. Therefore, power generation
  • the hydraulic pump 16 (a hydraulic pump motor is used in the present embodiment) can be rotated. This provides an auxiliary force when the wind turbine 12 is to be actively accelerated.
  • FIGS. 6A to 6F are energy flow diagrams.
  • the rated power generation energy is “50”.
  • the wind speed is larger than the third wind speed
  • the control device 58 receives the signal from the wind speed sensor 160 to determine the state. recognizes. then, the controller 5 8 opens and closes Suitchin grayed control virtually Similarly off valve 5 6-off valve 6 6 the case shown in the timing t. ⁇ t 3 in FIG. 3, the hydraulic pump motor
  • the rotation speed of the inner rotor 78 in the rotation shaft 42 of 18, that is, the generator 14 is increased to a rotation speed exceeding a predetermined value (150 rpm).
  • control device 58 recognizes from the signal from the rotation speed sensor 15 2 that the rotation speed of the rotation shaft 42 has exceeded the predetermined value, the control device 58 Open 1 36 (toothto t 1 2 in Fig. 5) At this time, keep the on-off valves 1 2 4 closed.
  • the control device 58 controls the on / off valve 13 36 to open / close switching, applies a load to the outer rotor 80, and determines the number of rotations. Adjust so that the relative speed of the inner rotor 78 relative to the outer rotor is always maintained at a predetermined value.
  • the rotation speed of the outer rotor 80 (rotary shaft 102 of the hydraulic pump motor 100) can be adjusted. It can be easily understood from the fact that 13 6, check valve 14 0 and accumulator 64 are equivalent to hydraulic pump 16, open / close valve 56, check valve 62 and accumulator 64.
  • FIG. 6B shows a point in time between “(; ⁇ to i 2 ” in FIG. 5, for example, when the rotation axis 42 of the hydraulic pump motor 18 becomes 2000 rpm and the hydraulic pump motor 100
  • the figure shows the energy flow at the time when the rotation axis 102 becomes 500 rpm
  • “50” corresponding to energy is used in the generator 14 and output to the external power system, and the remaining “50” is stored in the flywheel 74.
  • the inner rotation of the generator 14 The hydraulic pump motor 100 is driven using a part (“10”) of the rotational energy of the child 78, and the hydraulic power generated by the hydraulic pump motor 100 is applied to the hydraulic pump.
  • the switching control of the on-off valves 56 and 66 is performed to perform the hydraulic pump motor 1 by subtracting the oil power to 8, the rotation shaft 4 2, thus suppressing the rotation speed of the inner rotor 7 8 (t 1 2 ⁇ t 1 3 in FIG. 5).
  • switching control of the on-off valves 13 6 is performed to suppress the rotation axis 10 2 of the hydraulic pump motor 100, and thus the number of rotations of the outer rotor 80, so that the inner rotor 7 8 Maintain the rotation speed difference between the rotor 8 ° and the specified value (150 rpm).
  • the output from the generator 14 is kept in a stable state.
  • the energy stored in the flywheel 74 is extracted by only 10 to output the generated energy of 50, and the energy required to drive the generator 14 is output. You can see that it is used as Since a part (“5”) of the energy sent to the generator 14 is regenerated to the hydraulic pump motor 18 via the hydraulic pump motor 100, the generator 14 Means that the energy of “5 5” is moving. [0 0 8 1]
  • FIG. 6 D showing the energy flow in a time of the later stages of t 1 2 ⁇ t 1 3 in FIG. 5, the input energy to the hydraulic pump motor 1 8 "3 0 Even if it is reduced to "3", by generating and using a larger amount of energy (“20”) from the flywheel 74, the generated energy of "50" can be stably obtained by 3 ⁇ .
  • the control device 58 recognizes the state by a signal from the rotation speed sensor 152, and opens and closes the on-off valve 1. Open / close switching control of 16 and 124 is performed, and the hydraulic oil flowing out of the hydraulic pump motor 18 is supplied to the inflow / outflow port 110 of the hydraulic pump motor 100 through the oil passage 112.
  • the hydraulic circuit from the hydraulic pump motor 18 to the hydraulic pump motor 100 through the on-off valve 1 16, the accumulator 122, and the on-off valve 1 24 to the hydraulic pump motor 100 is the same as the hydraulic circuit shown in Fig. 4A. is there.
  • This state is shown in FIG. 6E, and indicates the time point when the rotation speed of the rotating shaft 42 becomes less than or equal to 1500 rpm and the rotating shaft 102 is rotating reversely.
  • the energy of “40” from the flywheel 74 is used as energy for direct power generation, and the hydraulic pump motor 100 is driven by the energy of “10” from the flywheel.
  • the generated oil power is sent to the hydraulic pump motor 18 to be used as the driving force for the rotating shaft 42 and, consequently, the inner rotor 78 of the generator 14, thereby generating power.
  • FIG 6 F is the energy flow in a time between the rotational speed of the rotary shaft 1 0 2 from t 1 4 of FIG. 5 is 0, this time, hydraulic pump motor 1 0 0 Since the reverse rotation speed of the motor is reduced to 0, the energy from the hydraulic pump motor 100 is used for decelerating the outer rotor 80 of the generator 14. Assuming that the amount of energy transferred from the hydraulic pump motor 100 to the generator 14 is “10”, even if the input energy to the hydraulic pump motor 18 is “100”, it is necessary to generate power. Only 40 energy is needed, and the rest is stored in the flywheel 74. After the number of revolutions of the number of revolutions 102 returns to 0, the same operation as t ⁇ in FIG. 5 is performed.
  • the configuration according to the present embodiment enables stable output to the external power system.
  • the rotary shaft of the hydraulic pump 16 is connected with the windmill 12 of the prober type, but the Darrieus or Savonius type windmill is connected with the windmill. Is also good.
  • Darrieus-type and Savonius-type wind turbines have bearings installed near the ground, so it is necessary to install an oil tank at a location away from the ground, such as Nacelle 30
  • the oil tanks can all be located at a single point on the ground.
  • the external force for rotating the hydraulic pump 16 is not limited to wind power, but may be hydraulic power, wave power, or the like.
  • the differential generator also includes a so-called disk generator in which both rotors are disk-shaped.
  • each rotor can be configured to allow a current to flow through the winding, or simply to be made of a rod conductor, or to be made of a permanent magnet.
  • the on-off valve 13 6 and the oil passage 13 8 are omitted, and the on-off valve 13 4 has a flow rate adjusting function, the rotation speed of the hydraulic pump motor 100 can be reduced. Adjustments can be made.
  • an oil passage (fifth oil passage) 200 is branched from an oil passage 52 between the accumulator 64 and the on-off valve 66, and the oil is branched off.
  • Route 200 is connected to oil line 1 1 2 between open / close valve 1 2 4 and hydraulic pump motor 100 0, and open / close valve (seventh open / close valve) 2 0 2 is connected to oil line 200. May be interposed.
  • the hydraulic pump motor 100 is also driven by the oil power generated by the hydraulic pump 16.
  • Oil passage 2 0 0 In the configuration is not provided, for example at the beginning blowing wind is small rotational speed of the hydraulic Ponpumo motor 1 8 as shown in the timing t 1 0 ⁇ t "in FIG.
  • the hydraulic pump motor 100 can be rotated even at the beginning of the wind, and the rotational speed difference between the rotors 78, 80 can be quickly set within the predetermined range. It is possible to do.
  • the on-off valve 202 corresponds to the on-off valve 66. Further, a valve corresponding to the check valve 72 can be provided in the oil passage 200, but it is substituted by the check valve 126. Further, the configuration of FIG. 7 is exactly the same as the configuration of FIG. 1 in other portions, and the same portions are denoted by the same reference numerals and overlapping description will be omitted.
  • the flywheel 74 is attached only to the rotating shaft 42 of the hydraulic pump motor 18, but the flywheel 74 is attached to the rotating shaft 102 of the hydraulic pump motor 100. Alternatively, another flywheel may be attached. Furthermore, it is conceivable to abolish the flywheel 74 and attach the flywheel only to the rotating shaft 102.
  • other means such as the hydraulic pump motor 18, In the case of using a built-in tachometer, a means for detecting from the flow rate of hydraulic oil flowing in the hydraulic pump motors 18, 100, or a means for detecting from the rotation speed of the flywheel 74, etc. There are various possibilities.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un ensemble de génération de courant (10) équipé d'une pompe hydraulique rotative (16) actionnée par la rotation d'une roue éolienne afin de générer du courant hydraulique, des moteurs de pompe hydrauliques (18, 100) qui pivotent sous l'effet du courant hydraulique généré par le pompe hydraulique, un générateur différentiel (14), et des moyens de détection (152, 154) servant à détecter le nombre de rotations différent entre un moteur interne (78) du générateur et un moteur externe (80) du générateur. Une pression hydraulique exercée sur les moteurs de pompe hydrauliques (18, 100) est régulée afin de conserver le nombre de rotation différent entre un moteur interne et un moteur externe dans une gamme prédéterminée en fonction de la différence détectée par les moyens de détection. Une sortie stable peut ainsi être obtenue indépendamment de la variation des forces extérieures.
PCT/JP2004/001243 2003-02-06 2004-02-06 Ensemble de generation de courant Ceased WO2004070935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-030042 2003-02-06
JP2003030042A JP4146737B2 (ja) 2003-02-06 2003-02-06 発電設備

Publications (1)

Publication Number Publication Date
WO2004070935A1 true WO2004070935A1 (fr) 2004-08-19

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PCT/JP2004/001243 Ceased WO2004070935A1 (fr) 2003-02-06 2004-02-06 Ensemble de generation de courant

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JP (1) JP4146737B2 (fr)
CN (1) CN100456627C (fr)
WO (1) WO2004070935A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008113699A3 (fr) * 2007-03-21 2009-04-02 Rle Internat Gmbh Dispositif de conversion d'énergie à système d'entraînement hydraulique
GB2465485A (en) * 2008-11-20 2010-05-26 Univ Exeter Variable hydraulic transmission for wind turbines
WO2009112942A3 (fr) * 2008-03-13 2010-10-07 Fernando Gracia Lopez Conversion d'énergie de liquide dynamique
ITMI20090895A1 (it) * 2009-05-20 2010-11-21 Maurizio Mantovani Elettrogeneratore eolico
EP1677002A3 (fr) * 2004-12-28 2011-05-18 Green Power Technology S.r.l. Eolienne
CN113007049A (zh) * 2021-03-31 2021-06-22 无锡职业技术学院 一种板簧震动液压发电系统

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KR101029153B1 (ko) * 2008-11-19 2011-04-13 이인열 하이브리드형 풍력 발전장치
KR101227390B1 (ko) 2010-06-15 2013-02-01 이한열 풍력발전시스템
CN103038504A (zh) * 2011-05-30 2013-04-10 三菱重工业株式会社 可再生能源型的发电设备及其操作方法
DE102011111219A1 (de) * 2011-08-20 2013-02-21 Hydac System Gmbh Energiewandlervorrichtung für Energieanlagen und Verfahren zum Betrieb einer dahingehenden Vorrichtung
KR20130083392A (ko) * 2011-11-30 2013-07-22 미츠비시 쥬고교 가부시키가이샤 재생 에너지형 발전 장치 및 그 제어 방법
TWI478468B (zh) 2013-01-28 2015-03-21 Jun Dong Power Corp 發電裝置
CN107394952A (zh) * 2017-08-18 2017-11-24 斯托格尼耶恩科·瓦连京 储能发电装置

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JPS5851279A (ja) * 1981-09-22 1983-03-25 Shimadzu Corp 風力タ−ビンの負荷制御装置
JPS6318993A (ja) * 1986-07-08 1988-01-26 Kawasaki Heavy Ind Ltd 二軸駆動差動式軸発電装置の周波数制御方式
JPH11287179A (ja) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd 発電装置

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JPH10313547A (ja) * 1997-05-09 1998-11-24 Mitsubishi Heavy Ind Ltd 液圧式発電装置
JP2002142498A (ja) * 2000-11-01 2002-05-17 Tomiji Watabe 振り子式波力発電装置の制御装置

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JPS55164785A (en) * 1979-05-25 1980-12-22 Schachle Charles V Wind force power generator
JPS5851279A (ja) * 1981-09-22 1983-03-25 Shimadzu Corp 風力タ−ビンの負荷制御装置
JPS6318993A (ja) * 1986-07-08 1988-01-26 Kawasaki Heavy Ind Ltd 二軸駆動差動式軸発電装置の周波数制御方式
JPH11287179A (ja) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd 発電装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1677002A3 (fr) * 2004-12-28 2011-05-18 Green Power Technology S.r.l. Eolienne
WO2008113699A3 (fr) * 2007-03-21 2009-04-02 Rle Internat Gmbh Dispositif de conversion d'énergie à système d'entraînement hydraulique
WO2009112942A3 (fr) * 2008-03-13 2010-10-07 Fernando Gracia Lopez Conversion d'énergie de liquide dynamique
GB2465485A (en) * 2008-11-20 2010-05-26 Univ Exeter Variable hydraulic transmission for wind turbines
ITMI20090895A1 (it) * 2009-05-20 2010-11-21 Maurizio Mantovani Elettrogeneratore eolico
WO2010134116A3 (fr) * 2009-05-20 2011-05-19 Maurizio Mantovani Éolienne
CN113007049A (zh) * 2021-03-31 2021-06-22 无锡职业技术学院 一种板簧震动液压发电系统
CN113007049B (zh) * 2021-03-31 2022-06-07 无锡职业技术学院 一种板簧震动液压发电系统

Also Published As

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JP4146737B2 (ja) 2008-09-10
CN100456627C (zh) 2009-01-28
CN1748355A (zh) 2006-03-15
JP2004266883A (ja) 2004-09-24

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