US6784564B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a wind power installation and a wind power installation
Assignee: Individual
•
Filing: 1998-12-18
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Granted: 2004-08-31
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Expires: 2018-12-18
Abstract
Abstract The present invention concerns a method of operating a wind power installation comprising an electric generator drivable by a rotor for outputting electrical power to an electrical consumer, in particular an electrical network. The invention further concerns a wind power installation comprising a rotor and an electric gererator coupled to the rotor for outputting electric power to an electrical consumer, in particular an electrical network. The object of the present invention is to provide a method of operating a wind power installation, and a wind power installation, which avoid the disadvantages of the state of the art and in particular avoid voltage over-fluctuations at the consumer, in particular an electrical network, and unwanted shut-down of the wind power installation. In a method of the kind set forth in the opening part of this specification, that object is attained by the invention in that the power delivered to the network by the wind power generator is regulated in dependence on the applied network voltage of the power supply network.
Inventors
- 👤 Alovs Wobben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:24
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/04; F03D7/042; F03D7/028; F03D7/0284; F03D7/043; F03D9/00; F03D9/20; F03D9/25; F03D9/255; H; H02; H02J; H02J3/00; H02J3/38; H02J3/381; H02P; H02P9/00; H02P9/10; H02P9/107; H02P9/14; H02P9/26; H02P9/30; H02P9/305; F05; F05B; F05B2270/00; F05B2270/10; F05B2270/103; F05B2270/1033; F05B2270/20; F05B2270/30; F05B2270/337; H02J2101/00; H02J2101/20; H02J2101/28; H02P2101/00; H02P2101/15; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/76
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
78 words
A method of operating a wind power installation including an electrical generator driven by a rotor for supplying electrical power to an electrical network having a network voltage and being connected to a customer, comprising: sensing said network voltage; supplying electrical power to the electrical network at a supplied power level in accordance with said network voltage; and reducing said supplied power level to a lower level when said network voltage exceeds a threshold value U 1 .
Claim 2
Independent Claim
78 words
A method of operating a wind power installation including an electrical generator driven by a rotor for supplying electrical power to an electrical network having a network voltage and being connected to a customer, comprising: sensing said network voltage; supplying electrical power to the electrical network at a supplied power level in accordance with said network voltage; and reducing said supplied power level to a lower level when said network voltage exceeds a threshold value U 1 .
Claim 3
Dependent Claim
36 words
The method of claim 1 wherein said generator is capable of generating said electrical power at a nominal power level dependant on current wind conditions, wherein said lower level is lower than said nominal power level.
Claim 4
Dependent Claim
32 words
The method of claim 1 wherein said step of reducing said supplied power level includes reducing said supplied power level gradually as said network voltage increases above said threshold U 1 .
Claim 5
Dependent Claim
33 words
The method of claim 3 wherein said step of reducing said supplied power level includes reducing said electrical power level to a zero level when said network voltage reaches a threshold value Umax.
Claim 6
Dependent Claim
33 words
The method of claim 4 wherein said step of reducing further comprises maintaining said supplied power level at said zero level as said network voltage rises above said threshold level U max .
Claim 7
Dependent Claim
31 words
The method of claim 3 wherein said step of reducing said electrical power includes reducing said electrical power linearly as said network voltage increases between U 1 and U max .
Claim 8
Dependent Claim
27 words
The method of claim 1 wherein said sensing includes sensing said network voltage at the point at which said electrical power is fed to said electrical network.
Claim 9
Dependent Claim
14 words
The method of claim 1 further generating said electrical power at a predeterminable frequency.
Claim 10
Dependent Claim
24 words
The method of claim 8 wherein said electrical network is operating at a network frequency, wherein predeterminable frequency corresponds substantially to said network frequency.
Claim 11
Dependent Claim
100 words
A wind power installation for delivering electrical power to an electrical network comprising: a rotor rotated by wind; an electrical generator coupled to said rotor and adapted to supply electrical power at a supplied power level to the electrical network; and a regulating device having a voltage sensor for sensing a network voltage associated with the electrical network, said regulating device being coupled to said electrical generator to control said power level in accordance with said network voltage, wherein said regulating device is adapted to reduce said supplied power level when said network voltage exceeds a level U 1 .
Claim 12
Dependent Claim
100 words
A wind power installation for delivering electrical power to an electrical network comprising: a rotor rotated by wind; an electrical generator coupled to said rotor and adapted to supply electrical power at a supplied power level to the electrical network; and a regulating device having a voltage sensor for sensing a network voltage associated with the electrical network, said regulating device being coupled to said electrical generator to control said power level in accordance with said network voltage, wherein said regulating device is adapted to reduce said supplied power level when said network voltage exceeds a level U 1 .
Claim 13
Dependent Claim
17 words
The wind power installation as set forth in claim 10 wherein said regulating device has a microprocessor.
Claim 14
Dependent Claim
46 words
The wind power installation as set forth in claim 10 wherein said regulating device is adapted to reduce said supplied power level from a first threshold to a second threshold level as said network voltage increases from level U 1 to a level U max .
Claim 15
Dependent Claim
31 words
The wind power installation as set forth in claim 12 wherein said regulating device is adapted to reduce said supplied power level from said first to said second threshold level linearly.
Claim 16
Dependent Claim
18 words
The wind power installation of as set forth in claim 13 wherein said second threshold level is zero.
Claim 17
Independent Claim
85 words
A method of operating an energy-generating apparatus including an electric generator for supplying electrical power to an electrical network, the electrical network being connected to at least one consumer and having a network voltage that fluctuates with demand, said method comprising: supplying electrical power from said electrical generator to said electrical network at a supplied power level; and regulating said supplied power level to protect said network from over-voltage by reducing said supplied power level when said network voltage exceeds a value U 1 .
Claim 18
Independent Claim
85 words
A method of operating an energy-generating apparatus including an electric generator for supplying electrical power to an electrical network, the electrical network being connected to at least one consumer and having a network voltage that fluctuates with demand, said method comprising: supplying electrical power from said electrical generator to said electrical network at a supplied power level; and regulating said supplied power level to protect said network from over-voltage by reducing said supplied power level when said network voltage exceeds a value U 1 .
Claim 19
Dependent Claim
41 words
The method as set forth in claim 15 wherein said supplied power level is regulated by reducing said supplied power level to a zero level as said network voltage increases from said value U 1 to a value U max .
Claim 20
Dependent Claim
16 words
The method as set forth in claim 16 wherein said supplied power level is reduced linearly.
Claim 21
Dependent Claim
28 words
The method as set forth in claim 16 wherein said supplied power level is maintained at a threshold level as set network voltage increases above said value Umax.
Claim 22
Dependent Claim
14 words
The method as set forth in claim 18 wherein said threshold level is zero.
Claim 23
Dependent Claim
43 words
The method of claim 15 further comprising increasing said supplied power level as said network voltage increases from a level U min to a level U 3 , said levels U min and U 3 being smaller than said level U 1 .
Claim 24
Dependent Claim
24 words
The method of claim 15 wherein said supplied power level is maintained constant when said network voltage is below said level U 1 .
Claim 25
Dependent Claim
35 words
The method of claim 15 wherein said supplied power level is maintained constant when said network voltage is between a level U 3 and U 1 , U 3 being lower than U 1 .
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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) | 2007-08-31 | 2008-03-01 | 2008-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-31 | 2012-03-01 | 2012-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-31 | 2016-03-01 | 2016-08-31 | $7700.00 | Window Closed / Lapsed |