WO2015029562A1 - 風力発電システム - Google Patents
風力発電システム Download PDFInfo
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- WO2015029562A1 WO2015029562A1 PCT/JP2014/066637 JP2014066637W WO2015029562A1 WO 2015029562 A1 WO2015029562 A1 WO 2015029562A1 JP 2014066637 W JP2014066637 W JP 2014066637W WO 2015029562 A1 WO2015029562 A1 WO 2015029562A1
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- heat
- power
- rotating machine
- generator
- torque
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Images
Classifications
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- 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
- F03D9/22—Wind motors characterised by the driven apparatus the apparatus producing heat
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
-
- 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
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output 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
- 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
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
-
- 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
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/62—Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
-
- 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
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
-
- 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
- F05B2220/60—Application making use of surplus or waste energy
- F05B2220/602—Application making use of surplus or waste energy with energy recovery turbines
-
- 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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- 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
- H02P2103/00—Controlling arrangements characterised by the type of generator
- H02P2103/10—Controlling arrangements characterised by the type of generator of the asynchronous type
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Definitions
- the present invention relates to a wind power generation system.
- the present invention relates to a wind power generation system that can generate electric power and heat using wind power, can control the generated power according to electric power demand, and can effectively use wind energy.
- Patent Document 3 Japanese Patent Application Laid-Open No. 2003-120505 (Patent Document 3) and Japanese Patent Application Laid-Open No. 2004-63930 (Patent Document 4) describe a technique for improving power generation efficiency in a power generation system using renewable energy, and power generation. Technologies that make effective use of electric power have been proposed.
- Patent Document 3 in a wind power generator, a turbine is driven using exhaust heat due to the loss of a generator shaft-coupled to a windmill, and the device is recovered as generated power from the generator shaft-coupled to the turbine. A technique for improving the efficiency of the system has been proposed.
- Patent Document 4 discloses that in a natural energy-based power generation system, surplus power generated by a power generation means (solar power generation, wind power generation) is converted into heat by an electric heating element and stored in a heat storage means (electric water heater). A technique for effectively using generated power as thermal energy has been proposed.
- the generated power is unstable. Further, since the wind power generation system generates power regardless of the power demand, the generated power cannot be controlled according to the power demand. In other words, the wind power generation system has a drawback that it cannot generate power when the power demand is large and cannot supply power, or the power generation amount exceeds the demand when the power demand is small, and surplus power is generated. Therefore, it is necessary to have a backup for maintaining the balance between supply and demand of the power system. For example, surplus power is stored in the storage battery, and insufficient power is supplied from the storage battery, or wind power generation system and thermal power generation equipment Is used to adjust fluctuations in generated power. However, storage batteries are expensive and not economical. Also, thermal power equipment must always wait to boot immediately, even consume fuel discharging CO 2 waiting.
- the technique described in Japanese Patent Application Laid-Open No. 2003-120505 is intended to improve the power generation efficiency of a wind power generator by generating power using exhaust heat due to the loss of the generator and collecting the generated power. is there.
- the technique described in Japanese Patent Application Laid-Open No. 2004-63930 is intended to effectively use generated power as thermal energy by converting surplus power that has been discarded in the past into heat and storing it as heat. is there.
- none of the technologies enables stable power supply and does not contribute to stabilization of the power system.
- the present invention has been made in view of the above circumstances, and one of its purposes is that it can generate power using both wind power and electricity, and can control the generated power according to the power demand. It is to provide a wind power generation system that can effectively use wind energy.
- the wind power generation system of the present application includes a windmill, an induction rotating machine, a power conversion device, a heat medium distribution mechanism, a heat accumulator, a thermoelectric generator, and an armature control unit.
- the induction rotating machine is connected to the rotating shaft of the windmill.
- the power converter supplies an exciting current to the induction rotating machine.
- the heat medium distribution mechanism distributes a heat medium that receives heat generated by the induction rotating machine.
- the heat accumulator stores the heat of the heat medium flowing through the heat medium distribution mechanism.
- the thermal generator converts the heat of the heat medium stored in the heat accumulator into electricity.
- the armature control unit controls the excitation current according to the power demand of the power system.
- the armature control unit supplies power generation mode control that causes the induction rotating machine to operate as a generator, and torque current that causes a load torque to be generated as excitation current by controlling to supply reactive current from the power system as excitation current.
- the heat generation mode control for operating the induction rotating machine as a heat generator is performed.
- the wind power generation system described above can generate wind power using both electricity and heat, can control the generated power according to the power demand, and can effectively use wind energy.
- the present inventors use an existing induction rotating machine (induction generator) and devise the excitation method of the induction rotating machine to operate one induction rotating machine as a normal generator. It reminded me to make it work as a heat generator. Based on this idea, by using the induction rotating machine as a generator or a heat generator depending on the power demand, it is possible to control the generated power according to the power demand and to make the most effective use of wind energy. The present inventors have found that the wind power generation system of the present application has been completed.
- the wind power generation system includes a windmill, an induction rotating machine, a power conversion device, a heat medium distribution mechanism, a heat accumulator, a thermoelectric generator, and an armature control unit.
- the induction rotating machine is connected to the rotating shaft of the windmill.
- the power converter supplies an exciting current to the induction rotating machine.
- the heat medium distribution mechanism distributes a heat medium that receives heat generated by the induction rotating machine.
- the heat accumulator stores the heat of the heat medium flowing through the heat medium distribution mechanism.
- the thermal generator converts the heat of the heat medium stored in the heat accumulator into electricity.
- the armature control unit controls the excitation current according to the power demand of the power system.
- the armature control unit supplies power generation mode control that causes the induction rotating machine to operate as a generator, and torque current that causes a load torque to be generated as excitation current by controlling to supply reactive current from the power system as excitation current.
- the heat generation mode control for operating the induction rotating machine as a heat generator is performed.
- the armature control unit can operate the induction rotating machine as a generator, a heat generator, or both, and stable power supply is possible.
- the induction rotating machine can be operated as a normal generator and power can be supplied from the induction rotating machine.
- the induction rotator By operating the induction rotator as a generator, the rotational energy of the windmill is directly converted into electrical energy in the same way as the induction generators used in conventional wind power generation systems. And the generated power is large.
- the induction rotating machine is operated as a heat generator, and the heat generated by the induction rotating machine is transferred to the heat accumulator through the heat medium distribution mechanism. Can store heat.
- the excitation current to the induction rotating machine is controlled by a control different from the conventional one, and a load torque that obstructs the rotation of the induction rotating machine is forcibly applied. It is possible to increase the calorific value. Specifically, for example, by applying a direct current to the reactive current (commercial three-phase alternating current) from the power system (commercial power supply) as an exciting current during normal (power generation mode), The same situation as at the time of starting can be created, and a load torque as much as the starting torque can be applied.
- a direct current to the reactive current commercial three-phase alternating current
- the power system commercial power supply
- the induction rotating machine when electric power is required, the induction rotating machine can be operated as a generator with high power generation efficiency, and power can be generated efficiently.
- the induction rotating machine when no electric power is required, the induction rotating machine can be operated as a heat generator, and heat can be stored in the heat accumulator. And when electric power is needed, it can also generate electric power with a thermal generator using the heat stored in the heat accumulator. Therefore, the wind power generation system of the embodiment can control the generated power according to the power demand and can effectively use the wind energy to the maximum.
- the induction rotating machine can be operated as both a generator and a heat generator by supplying an excitation current of a reactive current component and a torque current component to the induction rotating machine. Therefore, it is also possible to control the power generation amount and the heat generation amount of the induction rotating machine. For example, when not much electric power is required, a part of the rotational energy of the windmill can be extracted as electric energy and the rest can be extracted as thermal energy by the induction rotating machine.
- the wind turbine is controlled so as to release the wind to some extent by pitch control or the like. Yes. That is, in the case of strong wind, wind energy is released.
- the wind power generation system of the embodiment it is possible to operate as a heat generator while operating the induction rotating machine as a generator. In the case of strong wind, the induction rotating machine performs both power generation and heat generation. Thus, an output exceeding the rated output as a generator can be obtained. Therefore, the maximum energy can be recovered without wastefully escaping wind energy. Further, the usable wind speed range is widened, and the cutout wind speed can be increased.
- the induction rotating machine that has generated heat can be cooled by distributing the heat medium by the heat medium distribution mechanism, so that the induction rotating machine can be prevented from being burned out.
- the induction rotating machine is also called an induction machine, and is a general term for an induction generator and an induction motor.
- the induction rotating machine can be configured inexpensively and easily by diverting the technology of the existing induction generator (induction motor) as the induction rotating machine.
- An example of the induction rotating machine is a canned motor.
- an induction rotating machine includes a field arm having a field iron core and a field conductor disposed around the field core, and an armature having a salient pole disposed at a distance from the field and facing the field. And an armature having an armature winding wound around the iron core and its salient pole.
- the induction rotating machine has a structure in which one of the field and the armature is a rotor connected to the rotating shaft of the windmill, and the other is a stator.
- the induction rotating machine has a primary side armature winding to which an excitation current is supplied from the outside and a secondary side conductor (for example, a squirrel-cage conductor) that is not electrically connected to the outside and short-circuited at both ends.
- a secondary side conductor for example, a squirrel-cage conductor
- the armature control part has the structure which controls torque current to direct current or alternating current in heat_generation
- FIG. 7 is a diagram showing an example of a speed-torque characteristic of a typical induction rotating machine, in which the horizontal axis represents the rotational speed and the vertical axis represents the torque.
- the induction rotating machine usually has a starting torque larger than the rated torque when the rated output is output.
- the output of the induction rotating machine is proportional to the product of the rotation speed (the number of rotations) and the torque.
- the excitation current is controlled by the armature control unit and a direct current is supplied as the torque current.
- the rotational speed of the magnetic field generated in the child becomes zero, and a phenomenon of the same principle as a phenomenon called dynamic braking occurs.
- This is the same situation as when the induction rotating machine is started, assuming that the rotor is stationary and the stator is rotating relatively and the slip is 100%.
- the same load torque as the starting torque appears, and the amount of work (output) is consumed by heat generation. That is, by applying a direct current to the induction rotating machine (armature winding), the same torque as the starting torque can be produced, and the loss of the induction rotating machine increases, so that the heat generation amount can be increased.
- the armature control part controls the torque current to the alternating current of the frequency from the rated torque to the stationary torque in the heat generation mode control.
- the torque from the rated torque to the stationary torque is larger than the rated torque.
- the stationary torque is the maximum torque that can be generated by the induction rotating machine, and is larger than the rated torque and the starting torque.
- the armature control unit controls the excitation current, and the load torque is the rated torque.
- a work amount (output) larger than the rated torque can be obtained.
- a larger work amount (output) can be obtained.
- the rotational frequency of the magnetic field generated in the armature is adjusted by controlling the frequency of alternating current that causes slip torque, the load torque equivalent to the stall torque appears, and the work load (output) ) Is consumed by heat generation. Therefore, since the loss of the induction rotating machine is further increased, the heat generation amount can be further increased.
- the wind power generation system is equipped with the heat insulation container which accommodates an induction rotating machine, and the structure by which a heat medium distribution mechanism distribute
- the heat generated by the induction rotating machine can be recovered by the heat medium without escaping. Even if the field that generates heat is a rotor, the heat generated by the field can be easily transmitted to the heat medium.
- a wind power generation system 1 illustrated in FIG. 1 includes a windmill 10, an induction rotating machine 20, a power converter (inverter) 30, a heat medium distribution mechanism 40, a heat accumulator 50, and a heat generator 60.
- the induction rotating machine 20 is housed in a heat insulating container 250 (see FIG. 2). In this example, as shown in FIG.
- the wind turbine 10 is attached to a nacelle 92 installed at the top of a tower 91, and the induction rotating machine 20 and the power conversion device 30 are stored in the nacelle 92.
- a regenerator 50 and a thermal generator 60 are installed in a building 93 built at the lower part (base) of the tower 91.
- the induction rotating machine 20 and the thermal generator 60 are connected to and connected to an electric power system (commercial power supply) 100.
- Windmill The windmill 10 has a structure in which three blades 12 are radially attached to the rotary shaft 11 around a rotary shaft 11 extending in the horizontal direction.
- a rotation detector 13 (see FIG. 2) for detecting the rotation speed (number of rotations) is attached to the rotating shaft 11 of the windmill 10.
- the induction rotating machine 20 is configured by diverting an existing induction machine (a canned motor used for a high-temperature pump).
- the induction rotating machine 20 is a three-phase squirrel-cage induction machine (generator / motor), and is arranged with a space between the field 210 and the field 210 as shown in FIG. Armature 220.
- the field 210 is a rotor connected to the rotating shaft 11 of the windmill 10, and the armature 220 is a stator.
- the field (rotor) 210 includes a field iron core 211 connected to the rotating shaft 11 of the windmill 10 and a field conductor 215 arranged around the field core 211. The field 210 is rotated by the rotation of the windmill 10.
- the armature (stator) 220 is disposed outside the field 210 with a space therebetween and has an armature core 221 having a salient pole facing the field 210 and an armature wound around the salient pole. And winding 225.
- the induction rotating machine 20 (field 210) is directly connected to the rotating shaft 11 of the wind turbine 10, but the induction rotating machine 20 is connected to the output shaft of the speed increasing device via a speed increasing device (not shown). You may connect. By not using the gearbox, troubles caused by the gearbox can be avoided.
- the induction rotating machine 20 is connected to the power system 100 via the power conversion device 30. For this reason, the induction rotating machine 20 can generate power by obtaining an excitation current from the power system 100 and supply the generated power to the power system 100.
- a conductor is arranged in a cage shape around a cylindrical field iron core 211, and this cage conductor constitutes a field conductor 215.
- the squirrel-cage conductor (field conductor 215) embeds conductor bars 215b in a number of slots provided at intervals on the outer periphery of the field core 211, and short-circuits the conductor bars 215b at both ends of the field core 211. It is formed by providing a conductor end ring 215r.
- Such a squirrel-cage rotor has an extremely simple structure, and thus has an advantage such as few failures.
- a cage rotor using a cage conductor as the field conductor 215 is used.
- Field iron core 211 can be formed by laminating electromagnetic steel plates such as silicon steel plates, for example.
- the field conductor 215 can be formed using, for example, copper or aluminum.
- the armature (stator) 220 three-phase (U-phase, V-phase, W-phase) armature windings 225 are wound around the salient poles of the armature core 221 in a distributed manner.
- each phase of the armature winding 225 is Y-connected.
- the armature core 221 has a structure having a cylindrical yoke portion and salient poles projecting inward from the yoke portion toward the field 210.
- the armature winding 225 is distributed winding, but it can also be concentrated winding.
- the armature core 221 can be formed by laminating electromagnetic steel plates such as silicon steel plates.
- the armature winding 225 is used in a high temperature environment such as being disposed in the heat medium 400 that is at a high temperature, it is preferable to use, for example, a super heat resistant winding having a ceramic insulating layer.
- a super heat resistant winding one having heat resistance that can be used up to 400 ° C. is known.
- an enameled wire such as a polyamide-imide copper wire or a polyimide copper wire can be used.
- a shaft insertion port 253 into which the rotary shaft 11 is inserted is formed in the heat insulating container 250, and the rotary shaft 11 is connected to the field (rotor) 210 of the induction rotating machine 20 through the shaft insertion port 253.
- a through hole is formed in the central axis of the field iron core 211.
- the rotating shaft 11 is inserted into the through hole, and the field 210 is fixed to the rotating shaft 11.
- bearings (bearings) 261 and 262 are provided at two locations on the side where the rotating shaft 11 is inserted and on the opposite side.
- the rotary shaft 11 is rotatably supported by the bearings 261 and 262.
- the heat insulating container 250 is provided with an inlet portion 251 to which the heat medium 400 is supplied and an outlet portion 252 from which the heat medium 400 is discharged, and the heat medium 400 that receives the heat generated by the induction rotating machine 20 is provided.
- the inlet 251 is provided on the side of the heat insulating container 250 where the rotating shaft 11 is inserted, and the outlet 252 is provided on the opposite side.
- a supply pipe 41 and a discharge pipe 42 of the heat medium circulation mechanism 40 are connected to the inlet 251 and the outlet 252, respectively.
- a shaft seal 263 is disposed at the shaft insertion port 253 of the heat insulating container 250.
- the temperature of the heat medium 400 supplied from the inlet 251 into the heat insulating container 250 is preferably 100 ° C. or lower (for example, normal temperature). Thereby, the induction rotating machine 20 that has generated heat can be effectively cooled. Further, by setting the temperature to 100 ° C. or lower, it is sufficient that the shaft seal portion 263 disposed in the vicinity of the inlet portion 251 has a heat resistance of about 100 ° C. Therefore, a commercially available fluid seal is adopted for the shaft seal portion 263. can do.
- the heat medium 400 that has received the heat generated by the induction rotating machine 20 and is heated to a predetermined temperature (for example, 200 ° C. to 350 ° C.) is discharged from the heat insulating container 250 through the outlet 252.
- Heat medium 400 for example, water, oil, molten salt, or the like can be used.
- water vaporizes when the temperature exceeds 100 ° C., so that the internal pressure of the heat insulating container 250 increases when the heat medium 400 is heated to a temperature exceeding 100 ° C.
- oil or a molten salt having a boiling point exceeding 100 ° C. at normal pressure is used for the heating medium 400, the internal pressure of the heat insulating container 250 increases even when the heating medium 400 is heated to a temperature exceeding 100 ° C. Can be suppressed.
- the heat medium 400 preferably has a boiling point of more than 200 ° C.
- the heat medium 400 is preferably a liquid within a use temperature range (for example, normal temperature to 350 ° C.).
- oil having a boiling point of over 350 ° C. at normal pressure is used for the heat medium 400, the heat medium 400 is circulated in the heat insulating container 250, and the heat medium is heated to about 350 ° C. with the induction rotating machine 20. be able to.
- the power converter 30 supplies an exciting current to the induction rotating machine 20 (armature winding 225).
- the power converter 30 is connected to an armature control unit 310 (see FIG. 2) that controls the excitation current to the induction rotating machine 20 (armature winding 225) according to the power demand of the power system 100. ing.
- the armature control unit 310 controls the generation mode control in which the induction rotating machine 20 is operated as a generator by the control of supplying the reactive current from the power system 100 as the excitation current, and the torque current that causes the load torque to be generated as the excitation current.
- One or both of the heat generation mode control for operating the induction rotating machine 20 as a heat generator is performed by the supplied control.
- the torque current value (the magnitude of the current) to the armature winding 225 may be appropriately determined according to the specifications of the induction rotating machine 20 so that a predetermined load torque can be obtained. Value) and the same current value.
- the load torque increases as the torque current value increases.
- the torque current value can be, for example, 50% to 110% of the rated current value.
- the reactive rotation (three-phase alternating current) as shown in FIG.
- the machine 20 can be operated as a normal generator.
- the horizontal axis represents time (t) and the vertical axis represents current value (i).
- the horizontal axis and the vertical axis are the same in FIG.
- loss heat generation amount
- the torque current is controlled to a direct current, that is, as a torque current, a direct current is passed through at least two phases of the U-phase, V-phase, and W-phase of the armature winding 225, A direct current is applied between the V phase and the W phase, between the U phase and the W phase, and between the V phase and the W phase.
- the same direct current is input from two of the above three phases (for example, U phase and W phase), and the combined direct current is output from the remaining one phase (for example, V phase).
- direct current from any one of the three phases and direct current from another phase.
- the induction rotating machine 20 in this case operates as a heat generator
- the field (rotor) 210 is rotating at the rated rotation speed (rated rotation speed) due to the rotation of the windmill 10
- a direct current is applied as a torque current from the power conversion device 30 by the armature control unit 310
- the start is performed.
- An induced current flows through the field conductor 215 of the field 210, and the work (output) is consumed as heat generation in the field conductor 215.
- the starting torque is generally larger than the rated torque
- a work amount (output) larger than the rated output of the induction rotating machine 20 can be obtained, and the heat generation amount becomes large.
- both the power generation mode control and the heat generation mode control can be performed by the armature control unit 310, and the induction rotating machine 20 can be operated as both the generator and the heat generator.
- a torque current direct current
- a reactive current three-phase alternating current
- the heat medium distribution mechanism 40 distributes the heat medium 400 that receives the heat generated by the induction rotating machine 20 into the heat insulating container 250 (see FIGS. 1 and 2).
- the heat medium circulation mechanism 40 has one end connected to the inlet 251 of the heat insulating container 250 and one end connected to the supply pipe 41 that supplies the heat medium 400 into the heat insulating container 250 and the outlet 252 of the heat insulating container 250.
- the discharge pipe 42 discharges the heat medium 400 out of the heat insulating container 250 and the circulation pump 43 provided in the supply pipe 41.
- the other ends of the supply pipe 41 and the discharge pipe 42 are connected to the heat accumulator 50.
- the heat medium circulation mechanism 40 circulates the heat medium 400 in the heat insulation container 250 by circulating the heat medium 400 between the induction rotating machine 20 (heat insulation container 250) and the heat accumulator 50 by the circulation pump 43.
- the heat medium 400 heated by the induction rotating machine 20 is sent to the heat accumulator 50 through the discharge pipe 42.
- the heat accumulator 50 is filled with a heat accumulating material, and a first heat exchange pipe 51 and a second heat exchange pipe 52 are arranged, and the heat accumulator 50 has a heat exchange function.
- the exhaust pipe 42 is connected to the end of the 1st heat exchange pipe 51, and the heat medium 400 (for example, oil) heated by predetermined temperature distribute
- a secondary heat medium for example, water flows through the second heat exchange pipe 52, and heat exchange is performed between the heat storage material and the secondary heat medium, whereby the second heat exchange pipe 52 is provided.
- the secondary heat medium circulating in The generated secondary heat medium steam (for example, high-temperature high-pressure steam) is sent to the thermoelectric generator 60 via the second heat exchange pipe 52.
- the heat accumulator 50 also has a function as a heat exchange device.
- the heat storage material a latent heat storage material or a sensible heat storage material can be used, and these may be used in combination.
- a latent heat storage material is accompanied by a phase change between a solid and a liquid, and has a higher heat storage density than a sensible heat storage material.
- the supply pipe 41 is connected to the other end of the first heat exchange pipe 51.
- the heat medium 400 cooled by heat exchange is sent again to the induction rotating machine 20 (the heat insulating container 250) through the supply pipe 41 by the circulation pump 43.
- thermoelectric generator 60 converts the heat of the heat medium 400 heated by the induction rotating machine 20 into electricity.
- the heat stored in the heat accumulator 50 is converted into electricity.
- the thermal generator 60 shown in FIG. 1 has a configuration in which a steam turbine 61 and a generator 62 are combined, and the steam turbine 61 rotates by the steam supplied from the heat accumulator 50 to drive the generator 62 to generate electric power.
- the generated power can be supplied to the power system 100.
- a power control unit 80 that controls the generated power of the thermal power generator 60 according to the power demand of the power system 100 is connected to the thermal power generator 60.
- thermoelectric generator 60 steam turbine 61
- the steam of the secondary heat medium discharged from the thermoelectric generator 60 is cooled by the condenser 71 and returned to the liquid, and then is transferred to the heat accumulator 50 (second heat exchange pipe 52) by the circulation pump 72. Supplied. Thereby, the secondary heat medium circulates between the heat accumulator 50 and the thermal generator 60.
- Embodiment 1 ⁇ Effect of wind power generation system>
- the wind power generation system 1 of Embodiment 1 demonstrated above has the following effects.
- the induction rotating machine 20 can be operated as a generator, a heat generator, or both by the armature control unit 310, it is possible to control the generated power according to the power demand and maximize the wind energy. It can be used effectively.
- the induction rotating machine 20 when the power demand of the power system 100 is at a peak and the windmill 10 is rotating, the induction rotating machine 20 is operated as a generator with high power generation efficiency (power generation mode control), and power is supplied from the induction rotating machine 20. it can.
- the induction rotating machine 20 is operated as a heat generator (heat generation mode control), and the heat generated by the induction rotating machine 20 is used as a heat medium.
- Heat can be stored in the heat accumulator 50 through the distribution mechanism 40. If the wind turbine 10 is not rotating even when the power demand of the power system 100 is at a peak, the heat generated in the heat generator 60 is generated using the heat stored in the heat accumulator 50, and the electric power is supplied from the heat generator 60. it can. Therefore, according to the wind power generation system 1, stable power supply is possible without backup of storage batteries or thermal power generation facilities.
- the induction rotating machine 20 When the induction rotating machine 20 is operated as both a generator and a heat generator, it is possible to control the power generation amount and the heat generation amount of the induction rotating machine 20. Therefore, when not much electric power is required, the induction rotating machine 20 can extract a part of the rotational energy of the windmill 10 as electric energy and take out the rest as thermal energy. In addition, by operating the induction rotating machine 20 as a generator while operating as a generator, in the case of strong wind, the induction rotating machine 20 performs both power generation and heat generation, and the output exceeds the rated output as the generator. Obtainable. Therefore, the maximum energy can be recovered without wastefully escaping wind energy. Further, since the usable wind speed range is widened, the cutout wind speed can be increased.
- the induction rotating machine can divert the technology of the existing induction machine, it can be configured inexpensively and easily.
- Embodiment 2 demonstrates the case where the alternating current of the frequency from a rated torque to a stalling torque is applied to the induction rotating machine 20 (armature winding 225) as a torque current in heat generation mode control.
- armature winding 225 a case where the torque current is controlled to an alternating current having a frequency that becomes a stationary torque.
- the configuration of the second embodiment is the same as that of the first embodiment except that the excitation method of the induction rotating machine 20 by the armature control unit 310 is different, and the difference will be mainly described below.
- the armature control unit 310 controls the three-phase alternating current having a predetermined frequency that causes slipping torque in the heat generation mode control, and applies this to the armature winding 225 as a torque current. It is configured.
- the induction rotating machine 20 in this case operates as a heat generator
- the armature control unit 310 applies an alternating current having a frequency that becomes a stationary torque from the power converter 30.
- An induced current flows through the field conductor 215 of the field 210, and the work (output) thereof is consumed as heat generated by the field conductor 215.
- the stalling torque is generally larger than the rated torque and the starting torque, it is possible to obtain a larger work amount (output) than the rated output of the induction rotating machine 20. And the calorific value is further increased.
- a conductor is arranged in a cage shape on the inner periphery of a cylindrical field iron core 211, and this cage conductor can be used as a field conductor 215.
- this cage conductor field conductor 215)
- conductor bars 215 b are embedded in a number of slots provided at intervals on the inner periphery of the field core 211, and the conductor bars 215 b are short-circuited at both ends of the field core 211. It is formed by providing a conductor end ring 215r.
- the armature (rotor) is arranged inside the field 210 with a space therebetween and is connected to the rotating shaft of the windmill.
- the armature core can be connected to the rotating shaft of the windmill, and the armature winding can be wound around the salient pole of the armature core that protrudes outward toward the field.
- the armature winding can be the same three-phase distributed winding as in the first embodiment. Moreover, what is necessary is just to supply an exciting current to an armature winding via a slip ring from a power converter device.
- the armature control unit applies the load to the armature winding so that a load torque is generated.
- an induced current corresponding to the load torque flows through the field conductor of the field.
- the field conductor generates heat.
- the armature (rotor) is rotating at the rated rotation speed (rated rotation speed) due to the rotation of the windmill, as in the first embodiment, when a direct current is applied to the armature winding as the torque current, the starting torque and The same load torque appears, and the work (output) is consumed by the heat generated by the field conductor.
- the induction rotating machine can be configured not to be stored in the heat insulating container.
- the heat medium flow path is provided by forming a hole through which the heat medium flows in the field, or arranging a pipe through which the heat medium flows on the outer peripheral surface of the field.
- Embodiments 1 and 2 described above have described the configuration (inner rotor type) in which the rotor (field 210) is arranged inside the stator (armature 220) in the induction rotating machine.
- the induction rotating machine 20 is further changed so that the field 210 is a stator without changing the positional relationship between the field 210 and the armature 220, the armature 220 is a rotor, and the outside of the stator (field 210).
- the armature core is connected to the rotating shaft so that the armature rotates in conjunction with the rotating shaft of the windmill, and the field (field core) is cantilevered and fixed to a housing such as a heat insulating container. It can be a structure.
- an excitation current may be supplied to the armature winding from the power conversion device via the slip ring.
- the surface of the field core 211 is uneven.
- the heat exchange efficiency between the field 210 and the heat medium 400 can be improved by providing fins to increase the surface area of the field 210.
- the heat medium circulation mechanism 40 may be used as a heat accumulator by providing a heat insulation function by, for example, winding a heat insulating material around the supply pipe 41 or the discharge pipe 42 of the heat medium circulation mechanism 40.
- the heat generator 60 may generate power using the heat of the heat medium flowing through the heat medium flow mechanism 40.
- the wind power generation system of the present invention can be suitably used in the field of power generation using renewable energy.
- 1 wind power generation system 10 windmill, 11 rotating shaft, 12 blades, 13 rotation detector, 20 induction rotating machine, 210 field, 211 field iron core, 215 field conductor, 215b conductor bar, 215r conductor end ring, 220 electric machine Child, 221 armature core, 225 armature winding, 250 heat insulation container, 251 inlet part, 252 outlet part, 253 shaft insertion port, 261,262 bearing (bearing), 263 shaft seal part, 30 power converter, 310 electric machine Child control unit, 40 heat medium distribution mechanism, 400 heat medium, 41 supply pipe, 42 discharge pipe, 43 circulation pump, 50 heat accumulator, 51 first heat exchange pipe, 52 second heat exchange pipe, 60 heat generator, 61 steam Turbine, 62 generator, 71 condenser, 72 circulation pump, 80 power control unit, 91 tower, 9 Nasser, 93 buildings, 100 power system (commercial power).
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Abstract
Description
最初に本発明の実施態様を列記して説明する。
本発明の実施形態の具体例を、以下に図面を参照しつつ説明する。なお、図中同一または相当部分には同一符号を付して、その説明は繰り返さない。
<風力発電システムの全体構成>
図1~図5を参照して、実施形態1に係る風力発電システムについて説明する。図1に示す風力発電システム1は、風車10と、誘導回転機20と、電力変換装置(インバータ)30と、熱媒体流通機構40と、蓄熱器50と、熱発電機60とを備える。誘導回転機20は、断熱容器250に収納されている(図2参照)。この例では、図1に示すように、塔91の上部に設置されたナセル92に風車10が取り付けられ、ナセル92内に誘導回転機20と電力変換装置30とが格納されている。また、塔91の下部(土台)に建てられた建屋93に蓄熱器50と熱発電機60とが設置されている。誘導回転機20と熱発電機60とは電力系統(商用電源)100に接続され連系されている。
風車10は、水平方向に延びる回転軸11を中心に、3枚の翼12を回転軸11に放射状に取り付けた構造を有する。風車10の回転軸11には、回転速度(回転数)を検出する回転検出器13(図2参照)が取り付けられている。
誘導回転機20は、既存の誘導機(高温ポンプに用いられるキャンドモータ)を流用して構成されている。この例では、誘導回転機20は、三相かご形誘導機(発電機・電動機)であり、図2に示すように、界磁210と、界磁210に対して間隔をあけて配置される電機子220とを備える。界磁210が風車10の回転軸11に連結される回転子であり、電機子220が固定子である。具体的には、界磁(回転子)210は、風車10の回転軸11に連結される界磁鉄心211と、その周囲に配置された界磁導体215とを有する。界磁210は、風車10の回転により回転する。また、電機子(固定子)220は、界磁210の外側に間隔をあけて配置され、界磁210に対向する突極を有する電機子鉄心221と、その突極に巻回された電機子巻線225とを有する。この例では、風車10の回転軸11に誘導回転機20(界磁210)が直結されているが、増速機(図示せず)を介して増速機の出力軸に誘導回転機20を連結してもよい。増速機を用いないことで、増速機によるトラブルを回避することができる。
断熱容器250は、誘導回転機20(界磁(回転子)210および電機子(固定子)220)を収納する。断熱容器250は、たとえば金属製の容器の周囲に断熱材を配置して構成することができる。断熱材としては、たとえばロックウール、グラスウール、発砲プラスチック、レンガ、セラミック、またはこれら材料の任意の組み合わせからなる複合材などを用いることができる。
熱媒体400としては、たとえば水、油、溶融塩などを用いることができる。水を熱媒体400に用いた場合、水は100℃を超えると蒸気化するため、熱媒体400が100℃を超える温度に加熱されると、断熱容器250の内圧が上昇する。一方、常圧で100℃超の沸点を有する油または溶融塩を熱媒体400に用いた場合、熱媒体400が100℃を超える温度に加熱されても、断熱容器250の内圧が上昇することを抑制できる。熱媒体400は、常圧で200℃超の沸点を有することが好ましく、350℃超の沸点を有することがより好ましい。特に、熱媒体400は、使用温度範囲内(たとえば常温~350℃)で液体であることが好ましい。この例では、熱媒体400に常圧で350℃超の沸点を有する油を用いており、断熱容器250内に熱媒体400を流通させ、誘導回転機20で熱媒体を350℃程度まで加熱することができる。
電力変換装置30は、誘導回転機20(電機子巻線225)に励磁電流を供給する。また、電力変換装置30には、電力系統100の電力需要に応じて、誘導回転機20(電機子巻線225)への励磁電流を制御する電機子制御部310(図2参照)が接続されている。電機子制御部310は、励磁電流として電力系統100から無効電流を供給する制御により、誘導回転機20を発電機として動作させる発電モード制御と、励磁電流として負荷トルクを生じるすべりとなるトルク電流を供給する制御により、誘導回転機20を発熱機として動作させる発熱モード制御との一方又は両方を行う。
熱媒体流通機構40は、誘導回転機20で発生した熱を受け取る熱媒体400を断熱容器250内に流通させる(図1および図2参照)。この例では、熱媒体流通機構40は、断熱容器250の入口部251に一端が接続され断熱容器250内に熱媒体400を供給する供給管41と、断熱容器250の出口部252に一端が接続され断熱容器250外に熱媒体400を排出する排出管42と、供給管41に設けられた循環ポンプ43とで構成されている。また、供給管41および排出管42の各他端は蓄熱器50に接続されている。熱媒体流通機構40は、循環ポンプ43により誘導回転機20(断熱容器250)と蓄熱器50との間で熱媒体400を循環させることで、断熱容器250内に熱媒体400を流通させる。ここで、誘導回転機20の発熱によって加熱される熱媒体400の温度に応じて、循環ポンプ43により熱媒体400の流量を調整することが好ましい。具体的には、熱媒体400が所定温度より高い場合は、熱媒体400の流量を増やし、所定温度より低い場合は、流量を減らす。これにより、誘導回転機20を使用温度範囲内に維持することができる。
熱発電機60は、誘導回転機20で加熱された熱媒体400の熱を電気に変換する。この例では、蓄熱器50に蓄えられた熱を電気に変換する。図1に示す熱発電機60は、蒸気タービン61と発電機62とを組み合わせた構成を有し、蓄熱器50から供給された蒸気によって蒸気タービン61が回転して発電機62を駆動して発電し、発電電力を電力系統100に供給できる。また、熱発電機60には、電力系統100の電力需要に応じて、熱発電機60の発電電力を制御する電力制御部80が接続されている。
以上で説明した実施形態1の風力発電システム1は、次の効果を奏する。
実施形態1では、発熱モード制御において、電機子制御部310によりトルク電流として誘導回転機20(電機子巻線225)に直流を印加する場合について説明した。実施形態2では、発熱モード制御において、トルク電流として、誘導回転機20(電機子巻線225)に定格トルクから停動トルクまでとなる周波数の交流を印加する場合について説明する。ここでは、具体例として、トルク電流を停動トルクとなる周波数の交流に制御する場合を例に挙げて説明する。なお、実施の形態2の構成は、電機子制御部310による誘導回転機20の励磁方式が異なる点を除いて実施形態1の構成と同等であり、以下ではその相違点を中心に説明する。
上述した実施形態1,2では、誘導回転機20において、界磁210を回転子とし、電機子220を固定子とした構成(回転界磁型)について説明した。誘導回転機20をさらに変更して、界磁210と電機子220との位置関係を逆にするとともに、界磁210を固定子とし、電機子220を回転子とした構成(回転電機子型)とすることも可能である。
上述した実施形態1,2では、誘導回転機において、固定子(電機子220)の内側に回転子(界磁210)を配置した構成(インナーロータ型)について説明した。誘導回転機20をさらに変更して、界磁210と電機子220との位置関係を変えずに界磁210を固定子とし、電機子220を回転子とし、固定子(界磁210)の外側に回転子(電機子220)を配置した構成(アウターロータ型)とすることも可能である。
上述した変形例1の誘導回転機においても、変形例2と同じように、電機子を固定子とし、界磁を回転子とし、固定子(電機子)の外側に回転子(界磁)を配置した構成(アウターロータ型)とすることが可能である。
Claims (5)
- 風車と、
前記風車の回転軸に連結される誘導回転機と、
前記誘導回転機に励磁電流を供給する電力変換装置と、
前記誘導回転機で発生した熱を受け取る熱媒体を流通させる熱媒体流通機構と、
前記熱媒体流通機構に流通する前記熱媒体の熱を蓄える蓄熱器と、
前記蓄熱器に蓄えられた前記熱媒体の熱を電気に変換する熱発電機と、
電力系統の電力需要に応じて、前記励磁電流を制御する電機子制御部と、を備え、
前記電機子制御部は、
前記励磁電流として前記電力系統から無効電流を供給する制御により、前記誘導回転機を発電機として動作させる発電モード制御と、
前記励磁電流として負荷トルクを生じるすべりとなるトルク電流を供給する制御により、前記誘導回転機を発熱機として動作させる発熱モード制御との一方または両方を行なう、風力発電システム。 - 前記電機子制御部は、前記発熱モード制御において、前記トルク電流を直流または交流に制御する、請求項1に記載の風力発電システム。
- 前記電機子制御部は、前記発熱モード制御において、前記トルク電流を定格トルクから停動トルクまでとなる周波数の交流に制御する、請求項1に記載の風力発電システム。
- 前記誘導回転機を収納する断熱容器を備え、
前記熱媒体流通機構が、前記断熱容器内に前記熱媒体を流通させる、請求項1~請求項3のいずれか1項に記載の風力発電システム。 - 前記電力系統の電力需要に応じて、前記熱発電機の発電電力を制御する電力制御部を備える、請求項1~請求項4のいずれか1項に記載の風力発電システム。
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DE112014003958.6T DE112014003958T5 (de) | 2013-08-27 | 2014-06-24 | Wind-Stromerzeugungssystem |
CN201480047467.XA CN105531918B (zh) | 2013-08-27 | 2014-06-24 | 风力发电系统 |
RU2016110885A RU2016110885A (ru) | 2013-08-27 | 2014-06-24 | Ветряная система генерации энергии |
US14/914,226 US9617980B2 (en) | 2013-08-27 | 2014-06-24 | Wind power generating system |
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JP2013176088A JP6257960B2 (ja) | 2013-08-27 | 2013-08-27 | 風力発電システム |
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JP (1) | JP6257960B2 (ja) |
CN (1) | CN105531918B (ja) |
DE (1) | DE112014003958T5 (ja) |
RU (1) | RU2016110885A (ja) |
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Cited By (1)
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JP2022097523A (ja) * | 2017-01-24 | 2022-06-30 | 住友電気工業株式会社 | エネルギー貯蔵システムおよび変動電力安定利用システム |
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JP6038525B2 (ja) * | 2012-07-26 | 2016-12-07 | 住友電気工業株式会社 | 風力熱発電システム |
WO2016170653A1 (ja) * | 2015-04-23 | 2016-10-27 | 株式会社日立製作所 | 蒸気タービンシステム |
JP6465457B2 (ja) * | 2015-06-18 | 2019-02-06 | 住友電気工業株式会社 | 誘導加熱装置、及び発電システム |
CA3010103A1 (en) | 2016-02-17 | 2017-08-24 | Magna International Inc. | Die casting die with removable inserts |
KR20190016095A (ko) * | 2016-06-08 | 2019-02-15 | 아돌포 곤잘레스 페레스 | 자율 풍력 터빈, 다중 블레이드 로터, 축 압기 및 에너지 변환 장치 및 응용 |
CN106762418A (zh) * | 2017-01-19 | 2017-05-31 | 上海交通大学 | 基于风力发电可调节蓄电蓄热的孤岛能源系统 |
WO2018184745A1 (en) * | 2017-04-03 | 2018-10-11 | Siemens Wind Power A/S | Wind turbine waste heat recovery system |
CN108798999A (zh) * | 2017-05-01 | 2018-11-13 | 李启飞 | 风驱磁致热半导体温差发电系统 |
RU178738U1 (ru) * | 2017-06-01 | 2018-04-18 | Александр Геннадьевич Кремнев | Теплоэлектрическая станция |
CN108556562B (zh) * | 2018-03-23 | 2024-03-12 | 中信戴卡股份有限公司 | 一种用于控制轮毂温度的装置 |
EP3628863B1 (en) | 2018-09-26 | 2022-11-09 | Siemens Gamesa Renewable Energy A/S | Lightning protection for a rotor blade add-on |
DE102020113496B3 (de) | 2020-05-19 | 2021-08-19 | Hans Jürgen Wolters | Turm zur Stromerzeugung |
US20230266071A1 (en) * | 2021-12-20 | 2023-08-24 | Gyft Labs | Thermal energy storage and power generation system |
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-
2013
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2014
- 2014-06-24 CN CN201480047467.XA patent/CN105531918B/zh not_active Expired - Fee Related
- 2014-06-24 US US14/914,226 patent/US9617980B2/en active Active
- 2014-06-24 RU RU2016110885A patent/RU2016110885A/ru not_active Application Discontinuation
- 2014-06-24 WO PCT/JP2014/066637 patent/WO2015029562A1/ja active Application Filing
- 2014-06-24 DE DE112014003958.6T patent/DE112014003958T5/de not_active Withdrawn
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JP2011102576A (ja) * | 2009-10-15 | 2011-05-26 | Sumitomo Electric Ind Ltd | 発電システム |
JP2011216325A (ja) * | 2010-03-31 | 2011-10-27 | Sumitomo Electric Ind Ltd | 誘導加熱装置およびそれを備える発電システム |
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JP2022097523A (ja) * | 2017-01-24 | 2022-06-30 | 住友電気工業株式会社 | エネルギー貯蔵システムおよび変動電力安定利用システム |
JP7304010B2 (ja) | 2017-01-24 | 2023-07-06 | 住友電気工業株式会社 | エネルギー貯蔵システムおよび変動電力安定利用システム |
Also Published As
Publication number | Publication date |
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CN105531918B (zh) | 2018-03-02 |
CN105531918A (zh) | 2016-04-27 |
US9617980B2 (en) | 2017-04-11 |
RU2016110885A (ru) | 2017-10-03 |
DE112014003958T5 (de) | 2016-05-19 |
US20160201650A1 (en) | 2016-07-14 |
JP2015046984A (ja) | 2015-03-12 |
JP6257960B2 (ja) | 2018-01-10 |
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