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US6965174B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Method for operating a wind turbine

Assignee: Individual
•
Filing: 2002-04-22
•
Granted: 2005-11-15
•
Expires: 2022-04-22
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Abstract

Abstract The present invention relates to a method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto. The object of the present invention is to define a method for operating a wind turbine and to provide a wind turbine and/or a wind farm that is capable, even when the output of non-reactive power fluctuates, of reducing or at least of insignificantly increasing the unwanted fluctuation in voltage at a predefined point in the grid compared to the situation with no wind turbine(s). Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid. A method for operating a wind turbine and to provide a wind turbine and/or a wind farm that is capable, even when the output of non-reactive power fluctuates, of reducing or at least of insignificantly increasing the unwanted fluctuation in voltage at a predefined point in the grid compared to the situation with no wind turbines. Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid.

Inventors

  • 👤 Aloys Wobben

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 08:51
CPC Classifications
F; F03; F03D; F03D7/00; F03D9/00; F03D9/20; F03D9/25; F03D9/255; F03D9/257; H; H02; H02J; H02J3/00; H02J3/12; H02J3/16; H02J3/38; H02J3/381; H02J3/40; H02J3/42; H02J3/46; H02J3/50; H02K; H02K11/00; H02K11/20; H02K11/21; H02K11/225; F05; F05B; F05B2270/00; F05B2270/30; F05B2270/337; H02J2101/00; H02J2101/20; H02J2101/28; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/76; Y02E40/00; Y02E40/30; Y02E60/00; Y04; Y04S; Y04S10/00; Y04S10/12; Y04S10/126

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 49 words
Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid.
Claim 2
Dependent Claim 49 words
Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid.
Claim 3
Dependent Claim 34 words
Method according to claim 1 , characterized in that the phase angle φ is changed in such a way that the voltage remains substantially unchanged at at least one predefined point in the grid.
Claim 4
Dependent Claim 29 words
Method according to one of the preceding claims, characterized in that the voltage is measured at at least one predefined point ( 22 , 27 ) in the grid.
Claim 5
Dependent Claim 28 words
Method according to one of the preceding claims, characterized in that the voltage is measured at a point ( 22 , 27 ) different from the infeed point.
Claim 6
Dependent Claim 27 words
Method according to one of the preceding claims, characterized in that the value to be set for the phase angle φ is derived from predefined parameter values.
Claim 7
Dependent Claim 25 words
Method according to one of the preceding claims, characterized in that the regulation system can directly or indirectly actuate a switching device in the grid.
Claim 8
Dependent Claim 34 words
Method according to one of the preceding claims, characterized in that corresponding voltage measurement and regulation can be separately performed for portions of the power grid on the basis of the phase angle φ.
Claim 9
Dependent Claim 46 words
Wind farm with at least two wind turbines, characterized by a device ( 10 ) for performing the method according to one of the preceding claims and a dedicated voltage sensing device ( 22 , 27 ) for each separately controllable section of the wind farm.
Claim 10
Dependent Claim 38 words
System according to one of the preceding claims, characterized in that the phase angle is capacitively or inductively changed in response to at least one voltage measured in the grid until the voltage acquires a predefined reference value.
Claim 11
Dependent Claim 20 words
Wind turbine, characterized by a device ( 10 ) for performing the method according to one of the preceding claims.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2008-11-14 2009-05-16 2009-11-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2012-11-14 2013-05-16 2013-11-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2016-11-14 2017-05-16 2017-11-15 $7700.00 Window Closed / Lapsed

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