CA2644019A1 - Wind power generator system and control method of the same - Google Patents

Wind power generator system and control method of the same Download PDF

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Publication number
CA2644019A1
CA2644019A1 CA002644019A CA2644019A CA2644019A1 CA 2644019 A1 CA2644019 A1 CA 2644019A1 CA 002644019 A CA002644019 A CA 002644019A CA 2644019 A CA2644019 A CA 2644019A CA 2644019 A1 CA2644019 A1 CA 2644019A1
Authority
CA
Canada
Prior art keywords
rotational speed
control
power
pitch angle
control unit
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.)
Granted
Application number
CA002644019A
Other languages
French (fr)
Other versions
CA2644019C (en
Inventor
Shinji Arinaga
Tsuyoshi Wakasa
Takatoshi Matsushita
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries, Ltd.
Shinji Arinaga
Tsuyoshi Wakasa
Takatoshi Matsushita
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 Mitsubishi Heavy Industries, Ltd., Shinji Arinaga, Tsuyoshi Wakasa, Takatoshi Matsushita filed Critical Mitsubishi Heavy Industries, Ltd.
Publication of CA2644019A1 publication Critical patent/CA2644019A1/en
Application granted granted Critical
Publication of CA2644019C publication Critical patent/CA2644019C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D7/0276—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
    • 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
    • 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
    • H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
    • 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
    • F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
    • 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)
    • 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
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/304—Spool rotational speed
    • 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
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/32—Wind speeds
    • 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
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/321—Wind directions
    • 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
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/322—Control parameters, e.g. input parameters the detection or prediction of a wind gust
    • 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
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/327—Rotor or generator speeds
    • 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
    • F05B2270/70—Type of control algorithm
    • F05B2270/705—Type of control algorithm proportional-integral
    • 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
    • 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

Abstract

Provided is a wind power generation system, which comprises a windmill rotor having blades of a variable pitch angle, a generator adapted to be driven by the windmill rotor, and a control device for controlling the output power of the generator and the pitch angle of the blades in response to the speed (.omega.) of the windmill rotor or the generator. The control device performs a first control for controlling the output power in accordance with a predetermined power-speed curve till the speed (.omega.) rises to a predetermined rated speed, and a second control for controlling the output power to a predetermined rated power when the speed (.omega.) exceeds the rated speed. The control device keeps the state for performing the second control, in response to the pitch angle, when the speed (.omega.) becomes lower than the rated speed after the state for the second control was set. Thus, it is possible to provide the wind power generation system, in which the output power hardly fluctuates or the power generation efficiency hardly drops even if a short calm occurs.

Claims (9)

1. A wind power generator system comprising:

a windmill rotor including a blade whose pitch angle is variable;

a generator driven by said windmill rotor; and a control unit controlling output power of said generator and said pitch angle of said blade in response to a rotational speed of said windmill rotor or said generator, wherein said control unit performs a first control in which said output power is controlled in accordance with a predetermined power-rotational speed curve until said rotational speed is increased to reach a predetermined rated rotational speed, and performs a second control in which said output power is controlled to a predetermined rated power when said rotational speed exceeds said rated rotational speed, and wherein said control unit is responsive to said pitch angle for maintaining a state of performing said second control or for switching to a state of performing said first control, when said rotational speed is reduced below said rated rotational speed after said control unit is once set to the state of performing said second control.
2. The wind power generator system according to claim 1, wherein, when said rotational speed is reduced below said rated rotational speed after said control unit is once set to the state of performing said second control, said control unit maintains the state of performing said second control for a case when said pitch angle is larger than a predetermined pitch angle, and does not switch to the state of performing said first control until said pitch angle reaches said predetermined pitch angle.
3. The wind power generator system according to claim 1, wherein said control unit controls said pitch angle in response to a difference between said rotational speed and a predetermined rated rotational speed and a difference between said output power and said rated power.
4. The wind power generator system according to claim 3, wherein said control unit controls said pitch angle so as to reduce said pitch angle when said output power is less than said rated power.
5. The wind power generator system according to claim 1, wherein said control unit increases the output power of said generator in response to said rotational speed when detecting a gust.
6. The wind power generator system according to claim 1, further comprising:

a rotation mechanism rotating a rotation plane of the windmill rotor; and a wind direction detector detecting a windward direction, wherein said windmill rotor includes a pitch drive mechanism driving said blade, and wherein, when said control unit detects a failure of said pitch drive mechanism, said control unit control said rotation mechanism to move the rotation plane of said windmill rotor away from said windward direction.
7. The wind power generator system according to claim 1, wherein said control unit is responsive to a voltage of a power grid connected to said generator for controlling a reactive power outputted from said generator to said power grid, controlling said pitch angle in response to said reactive power.
8. The wind power generator system according to claim 1, further comprising:

an emergency battery; and a battery charger charging said emergency battery with power received from said power grid, wherein said windmill rotor includes a pitch drive mechanism driving said blade, wherein said emergency battery supplies power to said pitch drive mechanism and said control unit when a voltage of the power grid connected to the generator is decreased, wherein said control unit controls said output power so as to increase said output power while said emergency battery is charged.
9. A control method of a wind power generator system including a windmill rotor including a blade whose pitch angle is variable and a generator driven by said windmill rotor, said control method comprising:

a control step of controlling output power of said generator and said pitch angle of said blade in response to a rotational speed of said windmill rotor or said generator, wherein said control step includes:

(A) a step of performing a first control in which said output power is controlled in accordance with a predetermined power-rotational speed curve, until said rotational speed is increased to reach a predetermined rated rotational speed;

(B) a step of performing a second control in which said output power is controlled to a predetermine rated power when said rotational speed exceeds said rated rotational speed; and (C) in response to said pitch angle, maintaining a state of performing said second control or switching to a state of performing said first control, when said rotational speed is reduced below said rated rotational speed after the state of performing said second control is once established.
CA2644019A 2006-02-28 2007-02-27 Wind power generator system and control method of the same Expired - Fee Related CA2644019C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006052394A JP4738206B2 (en) 2006-02-28 2006-02-28 Wind power generation system and control method thereof
JP2006-052394 2006-02-28
PCT/JP2007/053601 WO2007099936A1 (en) 2006-02-28 2007-02-27 Wind power generation system, and control method therefor

Publications (2)

Publication Number Publication Date
CA2644019A1 true CA2644019A1 (en) 2007-09-07
CA2644019C CA2644019C (en) 2011-07-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2644019A Expired - Fee Related CA2644019C (en) 2006-02-28 2007-02-27 Wind power generator system and control method of the same

Country Status (7)

Country Link
US (2) US7728452B2 (en)
EP (1) EP1990539B1 (en)
JP (1) JP4738206B2 (en)
CN (1) CN101395369B (en)
AU (1) AU2007219781B8 (en)
CA (1) CA2644019C (en)
WO (1) WO2007099936A1 (en)

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