WO2009083447A3 - Apparatus and method for operating a wind turbine under low utility grid voltage conditions - Google Patents
Apparatus and method for operating a wind turbine under low utility grid voltage conditions Download PDFInfo
- Publication number
- WO2009083447A3 WO2009083447A3 PCT/EP2008/067696 EP2008067696W WO2009083447A3 WO 2009083447 A3 WO2009083447 A3 WO 2009083447A3 EP 2008067696 W EP2008067696 W EP 2008067696W WO 2009083447 A3 WO2009083447 A3 WO 2009083447A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wind turbine
- grid voltage
- operating
- under low
- utility grid
- 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
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
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
-
- 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
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
- F03D7/0284—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power in relation to the state of the electric grid
-
- 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
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
-
- 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
- F05B2270/107—Purpose of the control system to cope with emergencies
- F05B2270/1071—Purpose of the control system to cope with emergencies in particular sudden load loss
- F05B2270/10711—Purpose of the control system to cope with emergencies in particular sudden load loss applying a low voltage ride through method
-
- 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
- F05B2270/335—Output power or torque
-
- 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
- F05B2270/337—Electrical grid status parameters, e.g. voltage, frequency or power demand
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/28—Wind energy
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/809,379 US7966103B2 (en) | 2007-12-28 | 2008-12-17 | Apparatus and method for operating a wind turbine under low utility grid voltage conditions |
| EP13172491.6A EP2642626B1 (en) | 2007-12-28 | 2008-12-17 | Apparatus and method for operating a wind turbine under low utility grid voltage conditions |
| CN2008801204827A CN101919132B (en) | 2007-12-28 | 2008-12-17 | Device and method for operating a wind turbine under low mains voltage conditions |
| ES08869043T ES2430046T3 (en) | 2007-12-28 | 2008-12-17 | Apparatus and procedure for operating a wind turbine under conditions of low supply network voltage |
| EP08869043.3A EP2227848B1 (en) | 2007-12-28 | 2008-12-17 | Apparatus and method for operating a wind turbine under low utility grid voltage conditions |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US959407P | 2007-12-28 | 2007-12-28 | |
| US61/009,594 | 2007-12-28 | ||
| DKPA200800289 | 2008-02-28 | ||
| DKPA200800289 | 2008-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009083447A2 WO2009083447A2 (en) | 2009-07-09 |
| WO2009083447A3 true WO2009083447A3 (en) | 2009-08-27 |
Family
ID=40718543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/067696 Ceased WO2009083447A2 (en) | 2007-12-28 | 2008-12-17 | Apparatus and method for operating a wind turbine under low utility grid voltage conditions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7966103B2 (en) |
| EP (2) | EP2642626B1 (en) |
| CN (1) | CN101919132B (en) |
| ES (1) | ES2430046T3 (en) |
| WO (1) | WO2009083447A2 (en) |
Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8198742B2 (en) * | 2007-12-28 | 2012-06-12 | Vestas Wind Systems A/S | Variable speed wind turbine with a doubly-fed induction generator and rotor and grid inverters that use scalar controls |
| DK2227856T4 (en) * | 2007-12-28 | 2016-01-04 | Vestas Wind Sys As | Device and method for controlling the reactive power from a cluster of wind turbines connected to an electricity network |
| DK2080903T4 (en) * | 2008-01-21 | 2020-04-20 | Siemens Gamesa Renewable Energy As | Reliable system for controlling wind turbines |
| JP4865861B2 (en) * | 2008-08-14 | 2012-02-01 | 三菱重工業株式会社 | Wind power generator |
| DE102008059428A1 (en) * | 2008-11-27 | 2010-06-10 | Diehl Ako Stiftung & Co. Kg | Energieeinspeisevorrichtung |
| WO2010066892A2 (en) * | 2008-12-12 | 2010-06-17 | Vestas Wind Systems A/S | Control method and apparatus |
| JP5010619B2 (en) * | 2009-01-06 | 2012-08-29 | 三菱重工業株式会社 | Wind power generator and control method of wind power generator |
| EP2320549B1 (en) | 2009-11-05 | 2014-03-12 | Siemens Aktiengesellschaft | Method of operating an inverter and inverter control arrangement |
| US8046109B2 (en) * | 2009-12-16 | 2011-10-25 | General Electric Company | Method and systems for operating a wind turbine |
| ES2623631T3 (en) * | 2010-01-04 | 2017-07-11 | Vestas Wind Systems A/S | Method for operating a power dissipation unit in a wind turbine |
| US8803347B2 (en) * | 2010-04-12 | 2014-08-12 | Vestas Wind Systems A/S | Control of a wind turbine generator |
| GB2491548A (en) * | 2010-09-30 | 2012-12-12 | Vestas Wind Sys As | Over-rating control of a wind turbine power plant |
| EP2463979B1 (en) | 2010-12-08 | 2022-05-11 | Siemens Aktiengesellschaft | Fault-ride-through method, converter and power generating unit for a wind turbine |
| US8957535B2 (en) * | 2011-01-17 | 2015-02-17 | Vestas Wind Systems A/S | Fault tolerant wind turbine converter |
| CA2829573A1 (en) * | 2011-03-09 | 2012-09-13 | Petra Solar, Inc. | Distributed control of dynamic reactive power |
| ES2902912T3 (en) * | 2011-05-11 | 2022-03-30 | Seawind Ocean Tech Holding Bv | Power management system for wind turbines with yaw control |
| DE102011105854B4 (en) | 2011-06-03 | 2013-04-11 | Nordex Energy Gmbh | Method for operating a wind energy plant in the event of a grid fault and such a wind turbine |
| DE102011111210A1 (en) | 2011-08-20 | 2013-02-21 | Nordex Energy Gmbh | A method of operating a wind turbine in the event of a mains failure with a voltage drop and such a wind turbine |
| JP5777211B2 (en) * | 2011-09-05 | 2015-09-09 | 国立大学法人東京工業大学 | Wind farm |
| EP2672624B1 (en) * | 2012-06-05 | 2014-10-29 | Siemens Aktiengesellschaft | Current controller and generator system |
| DE102012212366A1 (en) * | 2012-07-13 | 2014-01-30 | Wobben Properties Gmbh | Method for controlling an electric generator |
| US9030174B2 (en) * | 2012-09-14 | 2015-05-12 | General Electric Company | Current balance control in converter for doubly fed induction generator wind turbine system |
| US8872372B2 (en) | 2012-11-30 | 2014-10-28 | General Electric Company | Method and systems for operating a wind turbine when recovering from a grid contingency event |
| WO2014094271A1 (en) * | 2012-12-20 | 2014-06-26 | Abb Technology Ltd. | Coordinated control method of generator and svc for improving power plant active power throughput and controller thereof |
| CN103184974B (en) * | 2013-03-29 | 2015-04-22 | 北京天诚同创电气有限公司 | Power-frequency feathering variable-pitch system for wind generating set and wind generating set |
| WO2015043602A1 (en) * | 2013-09-30 | 2015-04-02 | Vestas Wind Systems A/S | Detecting faults in electricity grids |
| CN105830303B (en) * | 2013-11-28 | 2019-02-26 | 维斯塔斯风力系统集团公司 | Reconfiguration of reactive power circuits of wind power plants |
| EP3074629B1 (en) * | 2013-11-29 | 2022-06-22 | Vestas Wind Systems A/S | Power-ramping pitch feed-forward |
| JP6165644B2 (en) * | 2014-01-24 | 2017-07-19 | 三菱重工業株式会社 | Wind farm and its operating method |
| KR101423212B1 (en) * | 2014-05-22 | 2014-07-24 | 전북대학교산학협력단 | Voltage control system and method at the point of common coupling of wind power plant |
| DE102014219052A1 (en) * | 2014-09-22 | 2016-03-24 | Wobben Properties Gmbh | Method for generating an alternating electrical current |
| CN107078511B (en) * | 2014-11-03 | 2019-11-08 | 维斯塔斯风力系统集团公司 | Controlling active power generation of a wind power plant and method for a wind power plant |
| US9447772B2 (en) * | 2014-12-18 | 2016-09-20 | General Electric Company | Systems and methods for increasing wind turbine power output |
| EP3096004A1 (en) * | 2015-05-18 | 2016-11-23 | ABB Technology AG | Wind farm inertial response |
| US10669990B2 (en) * | 2015-06-11 | 2020-06-02 | Vestas Wind Systems A/S | Ramping power in a wind turbine using gain scheduling |
| DK3157161T3 (en) * | 2015-10-12 | 2019-05-20 | Siemens Ag | WIND POWER INSTALLATION PROCEDURE |
| GB2545493A (en) * | 2015-12-18 | 2017-06-21 | Moog Unna Gmbh | Wind turbine diagnostic apparatus |
| US10396694B2 (en) * | 2016-03-17 | 2019-08-27 | General Electric Company | System and method for minimizing reactive current to limit rotor modulation index on a power converter |
| US9970417B2 (en) * | 2016-04-14 | 2018-05-15 | General Electric Company | Wind converter control for weak grid |
| US20170298904A1 (en) * | 2016-04-18 | 2017-10-19 | Siemens Aktiengesellschaft | Method for responding to a grid event |
| KR20190033620A (en) * | 2016-08-09 | 2019-03-29 | 엠에이치아이 베스타스 오프쇼어 윈드 에이/에스 | Wind turbine control method and system |
| DK179832B1 (en) * | 2018-01-15 | 2019-07-24 | Vestas Wind Systems A/S | Controling a wind turbine during over-voltage ride through |
| DK3719301T3 (en) | 2019-04-03 | 2023-02-06 | Nordex Energy Se & Co Kg | PROCEDURE FOR OPERATING A WIND TURBINE WITH AT LEAST ONE ROTOR BLADE WITH ADJUSTABLE BLADE ANGLE |
| CN113048009B (en) * | 2019-12-27 | 2022-11-29 | 新疆金风科技股份有限公司 | Variable pitch control method, device and system of wind generating set |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5083039A (en) * | 1991-02-01 | 1992-01-21 | U.S. Windpower, Inc. | Variable speed wind turbine |
| WO2005031160A2 (en) * | 2003-09-25 | 2005-04-07 | Repower Systems Ag | Wind power plant comprising a reactive power module for supporting a power supply system and corresponding method |
| EP1561946A2 (en) * | 2004-02-04 | 2005-08-10 | Clipper Windpower Technology, Inc. | Generator with utility fault ride-through capability |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4536126A (en) * | 1970-12-18 | 1985-08-20 | Westinghouse Electric Corp. | System and method employing a digital computer for automatically synchronizing a gas turbine or other electric power plant generator with a power system |
| US4031407A (en) * | 1970-12-18 | 1977-06-21 | Westinghouse Electric Corporation | System and method employing a digital computer with improved programmed operation for automatically synchronizing a gas turbine or other electric power plant generator with a power system |
| US4283634A (en) * | 1971-06-23 | 1981-08-11 | Westinghouse Electric Corp. | System and method for monitoring and controlling operation of industrial gas turbine apparatus and gas turbine electric power plants preferably with a digital computer control system |
| US4656362A (en) * | 1982-11-08 | 1987-04-07 | United Technologies Corporation | Blade pitch angle control for large wind turbines |
| US6921985B2 (en) * | 2003-01-24 | 2005-07-26 | General Electric Company | Low voltage ride through for wind turbine generators |
| US7511385B2 (en) * | 2005-11-11 | 2009-03-31 | Converteam Ltd | Power converters |
| US7423412B2 (en) * | 2006-01-31 | 2008-09-09 | General Electric Company | Method, apparatus and computer program product for injecting current |
| JP4738206B2 (en) * | 2006-02-28 | 2011-08-03 | 三菱重工業株式会社 | Wind power generation system and control method thereof |
| JP4773850B2 (en) | 2006-03-08 | 2011-09-14 | 三菱重工業株式会社 | Wind power generation system and emergency power supply method for wind power generation system |
| US7476987B2 (en) * | 2006-04-25 | 2009-01-13 | The University Of New Brunswick | Stand-alone wind turbine system, apparatus, and method suitable for operating the same |
| EP2032846A4 (en) | 2006-05-31 | 2011-04-13 | Wisconsin Alumni Res Found | ARCHITECTURE OF CONDITIONING ENERGY FOR A WIND TURBINE |
| ES2378349T3 (en) * | 2007-05-31 | 2012-04-11 | Vestas Wind Systems A/S | Wind turbine with resonant control system |
| US8198742B2 (en) * | 2007-12-28 | 2012-06-12 | Vestas Wind Systems A/S | Variable speed wind turbine with a doubly-fed induction generator and rotor and grid inverters that use scalar controls |
| US8030791B2 (en) * | 2008-07-31 | 2011-10-04 | Rockwell Automation Technologies, Inc. | Current source converter-based wind energy system |
-
2008
- 2008-12-17 EP EP13172491.6A patent/EP2642626B1/en active Active
- 2008-12-17 EP EP08869043.3A patent/EP2227848B1/en active Active
- 2008-12-17 CN CN2008801204827A patent/CN101919132B/en not_active Expired - Fee Related
- 2008-12-17 WO PCT/EP2008/067696 patent/WO2009083447A2/en not_active Ceased
- 2008-12-17 US US12/809,379 patent/US7966103B2/en active Active
- 2008-12-17 ES ES08869043T patent/ES2430046T3/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5083039A (en) * | 1991-02-01 | 1992-01-21 | U.S. Windpower, Inc. | Variable speed wind turbine |
| US5083039B1 (en) * | 1991-02-01 | 1999-11-16 | Zond Energy Systems Inc | Variable speed wind turbine |
| WO2005031160A2 (en) * | 2003-09-25 | 2005-04-07 | Repower Systems Ag | Wind power plant comprising a reactive power module for supporting a power supply system and corresponding method |
| EP1561946A2 (en) * | 2004-02-04 | 2005-08-10 | Clipper Windpower Technology, Inc. | Generator with utility fault ride-through capability |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2642626B1 (en) | 2020-07-22 |
| EP2642626A3 (en) | 2017-11-08 |
| EP2642626A2 (en) | 2013-09-25 |
| EP2227848A2 (en) | 2010-09-15 |
| EP2227848B1 (en) | 2013-06-19 |
| WO2009083447A2 (en) | 2009-07-09 |
| ES2430046T3 (en) | 2013-11-18 |
| CN101919132A (en) | 2010-12-15 |
| CN101919132B (en) | 2013-10-16 |
| US7966103B2 (en) | 2011-06-21 |
| US20110049903A1 (en) | 2011-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009083447A3 (en) | Apparatus and method for operating a wind turbine under low utility grid voltage conditions | |
| WO2010085987A3 (en) | Adaptive voltage control for wind turbines | |
| WO2012089698A3 (en) | Wind farm and method for operating a wind farm | |
| WO2007012682A3 (en) | Method of maintaining wind turbine components operational and a turbine comprising components suitable for operational maintenance | |
| WO2013185772A3 (en) | Wind-power-plant control upon low-voltage grid faults | |
| WO2012062327A3 (en) | Method for operating a wind power generation system | |
| WO2009083446A3 (en) | Apparatus and method for controlling reactive power from clusters of wind turbines connected to a utility grid | |
| EP2161443A3 (en) | A wind turbine having a main power converter and an auxiliary power converter and a method for the control thereof | |
| WO2012066005A3 (en) | Method for connecting a photovoltaic installation to a power supply grid | |
| CA2714887A1 (en) | Generating apparatus and control method thereof | |
| WO2007001416A3 (en) | Power generation system incorporating a vanadium redox battery and a direct current wind turbine generator | |
| WO2011050807A3 (en) | Wind power plant with optimal power output | |
| WO2012019785A3 (en) | Arrangement for generating a control signal for controlling a power output of a power generation system | |
| WO2008040350A3 (en) | Method for operating a wind turbine connected to a utility grid during utility grid disturbance, wind turbine and wind park | |
| MX346517B (en) | Method for operating a wind turbine or a wind farm. | |
| WO2014173695A3 (en) | Method for feeding electrical power into an electrical supply network | |
| EP2647839A3 (en) | Methods and systems for alleviating loads in off-shore wind turbines | |
| WO2012076015A3 (en) | A method of operating a wind turbine as well as a system suitable therefore | |
| WO2011072689A3 (en) | Wind power plant controller for avoiding common cause shutdown | |
| WO2011154319A3 (en) | Wind turbine and method for operating a wind turbine | |
| WO2013049184A3 (en) | Methods and systems for operating a power converter | |
| WO2010124886A3 (en) | Method for the operation of a rotor blade adjustment drive | |
| WO2011009958A3 (en) | Method for operating a wind turbine and wind turbine suited therefor | |
| WO2014020157A3 (en) | Improved voltage control for wind turbines | |
| WO2014040600A3 (en) | Power plant control during a low voltage or a high voltage event |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 200880120482.7 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08869043 Country of ref document: EP Kind code of ref document: A2 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2008869043 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1377/MUMNP/2010 Country of ref document: IN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 12809379 Country of ref document: US |