Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberWO2003076801 B1
Publication typeApplication
Application numberPCT/US2003/006310
Publication date8 Apr 2004
Filing date3 Mar 2003
Priority date7 Mar 2002
Also published asDE60334080D1, EP1483501A2, EP1483501B1, US6749399, US20030170123, US20050019163, WO2003076801A2, WO2003076801A3
Publication numberPCT/2003/6310, PCT/US/2003/006310, PCT/US/2003/06310, PCT/US/3/006310, PCT/US/3/06310, PCT/US2003/006310, PCT/US2003/06310, PCT/US2003006310, PCT/US200306310, PCT/US3/006310, PCT/US3/06310, PCT/US3006310, PCT/US306310, WO 03076801 B1, WO 03076801B1, WO 2003/076801 B1, WO 2003076801 B1, WO 2003076801B1, WO-B1-03076801, WO-B1-2003076801, WO03076801 B1, WO03076801B1, WO2003/076801B1, WO2003076801 B1, WO2003076801B1
InventorsWilliam E Di Heronemus
ApplicantOcean Wind Energy Systems
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Wind turbine with a plurality of rotors
WO 2003076801 B1
Abstract
A wind turbine with an array of rotors arranged at various heights. Each rotor is optimized for the height at which it is located. Optimization of each rotor could include selection of rated power, solidity, tip speed, blade taper, or rotor diameter. Each rotor can also be operated in a manner that is optimized for the wind speed it experiences. Optimized operation parameters could include blade pitch angle or rotor speed.
Amended Claims  (OCR text may contain errors)
[Received by the International Bureau on 09 October 2003 ( 09.10.03 ): original claim 1 amended; new claims 9 to 16 added; all remaining claims unchanged (3 pages)]
What is claimed is: 1. A wind turbine comprising: a tower; a plurality of rotors attached to said tower at a plurality of heights wherein each rotor is individually optimized for the wind- speed at the height at which it is attached.
2. The wind turbine of claim 1 wherein each said rotor has a rated power that is selected based on the annual average wind speed at the height at which it is attached.
3. The wind turbine of claim 1 wherein each said rotor has a plurality of blades and the ratio of the planform area of said blades to the swept area of each said rotor is selected based on the annual average wind speed at the height at which it is attached.
4. The wind turbine of claim 1 wherein each said rotor has a rotor diameter that is selected based on the annual average wind speed at the height at which it is attached.
5. The wind turbine of claim 1 further comprising a wind speed sensor associated with each of said rotors for measuring the wind speed at a respective rotor wherein the operation of each said rotor is controlled for optimum performance for its measured wind speed.
6. The wind turbine of claim 5 further comprising a controller which receives data from each of said wind speed sensors and controls the
26 operation of each said rotor based on the measured wind speed at said rotor.
7. The wind turbine of claim 6 wherein said controller adjusts the blade pitch of each said rotor based on the measured wind speed at said rotor.
8. The wind turbine of claim 7 wherein said controller adjusts the rotational speed of each said rotor based on the measured wind speed at said rotor.
9. A method of extracting energy from wind comprising: providing a tower; supporting a plurality of rotor driven turbines on said tower at a plurality of heights; and optimizing each said rotor driven turbine for the wind-speed at the height at which it is supported.
10. The method of claim 9 wherein the step of optimizing each said rotor driven turbine comprises selecting a rated power for each turbine based on the annual average wind-speed at the height at which it is supported.
11. The method of claim 9 wherein the step of optimizing each said rotor driven turbine comprises providing each said rotor with a plurality of blades and selecting the ratio of the planform area of said blades to the swept area of each said rotor based on the annual average wind-speed at the height at which it is supported.
12. The method of claim 9 wherein the step of optimizing each said rotor driven turbine comprises selecting a rotor diameter based on the annual average wind-speed at the height at which it is supported.
13. The method of claim 9 further comprising the step of providing a wind- speed sensor associated with each of said turbines to measure the wind- speed at a respective turbine and further comprising the step of controlling each said turbine for optimum performance for its measured wind-speed.
14. The method of claim 13 further comprising the step of providing a controller which receives data from each of said wind speed sensors and controlling the operation of each said turbine based on the measured wind-speed.
15. The method of claim 14 wherein the step of controlling the operation of each said rotor driven turbines comprises using said controller to adjust the blade pitch of each said rotor based on the measured wind-speed at the turbine location.
16. The method of claim 14 wherein the step of controlling the operation of each said turbine comprises using said controller to adjust the rotational speed of each said rotor based on the measured wind-speed at the turbine location.
28
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US893739730 Mar 201120 Jan 2015Wilic S.A.R.L.Wind power turbine and method of removing a bearing from a wind power turbine
US89373988 Mar 201220 Jan 2015Wilic S.Ar.L.Wind turbine rotary electric machine
US89575559 Mar 201217 Feb 2015Wilic S.Ar.L.Wind turbine rotary electric machine
US897577021 Apr 201110 Mar 2015Wilic S.Ar.L.Wind power turbine electric generator and wind power turbine equipped with an electric generator
US90069188 Mar 201214 Apr 2015Wilic S.A.R.L.Wind turbine
US931274116 Jul 201312 Apr 2016Windfin B.V.Wind power generator equipped with a cooling system
Classifications
International ClassificationF03D7/02, F03D7/04, F03D11/04, F03D11/00, F03D1/06, F03D1/02
Cooperative ClassificationF03D80/70, F05B2240/913, F03D1/02, Y02E10/728, F05B2240/9121, F05B2240/912, Y02E10/721, F05B2240/40, F03D80/30, F03D13/20
European ClassificationF03D11/00E, F03D11/04, F03D1/02, F03D11/00B
Legal Events
DateCodeEventDescription
18 Sep 2003ALDesignated countries for regional patents
Kind code of ref document: A2
Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG
18 Sep 2003AKDesignated states
Kind code of ref document: A2
Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW
12 Nov 2003121Ep: the epo has been informed by wipo that ep was designated in this application
8 Apr 2004BLater publication of amended claims
Effective date: 20031009
7 Sep 2004WWEWipo information: entry into national phase
Ref document number: 2003574989
Country of ref document: JP
14 Sep 2004WWEWipo information: entry into national phase
Ref document number: 2003726010
Country of ref document: EP
8 Dec 2004WWPWipo information: published in national office
Ref document number: 2003726010
Country of ref document: EP