Wind power plant comprising a rotor blade adjusting device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02P-009/48
H02P-009/00
F03D-009/00
출원번호
US-0567636
(2004-08-09)
등록번호
US-7256509
(2007-08-14)
우선권정보
DE-103 38 127(2003-08-15)
국제출원번호
PCT/EP04/008901
(2004-08-09)
§371/§102 date
20060208
(20060208)
국제공개번호
WO05/017350
(2005-02-24)
발명자
/ 주소
Brandt,Karsten
Zeumer,J철rg
출원인 / 주소
Repower Systems AG
대리인 / 주소
Rankin, Hill, Porter & Clark LLP
인용정보
피인용 횟수 :
16인용 특허 :
10
초록▼
A wind power plant including a rotor having at least one angle-adjustable rotor blade, a generator that, for generating electrical power, can be directly or indirectly coupled to the rotor and, for supplying the electrical power, can be directly or indirectly coupled to an electrical grid, at least
A wind power plant including a rotor having at least one angle-adjustable rotor blade, a generator that, for generating electrical power, can be directly or indirectly coupled to the rotor and, for supplying the electrical power, can be directly or indirectly coupled to an electrical grid, at least one rotor blade adjusting device for setting an angle of the rotor blade including at least one blade adjusting drive having at least one direct-current motor that can be coupled to the electrical grid via a converter, a control device, coupled to the converter and via which the control and/or regulation of the blade adjusting drive ensues, and a direct current voltage source that ensures a power supply to the blade adjusting drive in the event of grid power failure, whereby the direct current voltage source can be directly coupled to the blade adjusting drive or indirectly to the blade adjusting drive.
대표청구항▼
The invention claimed is: 1. A wind-driven power-plant (10) comprising: a rotor (12) fitted with at least one angularly adjustable rotor blade (14), a generator which can be both connected directly or indirectly to the rotor (12) to generate electric power and connected directly or indirectly to an
The invention claimed is: 1. A wind-driven power-plant (10) comprising: a rotor (12) fitted with at least one angularly adjustable rotor blade (14), a generator which can be both connected directly or indirectly to the rotor (12) to generate electric power and connected directly or indirectly to an electric grid (25) to feed electric power to said grid, and at least one rotor blade adjustment system which adjusts the angle of the rotor blade (14) and which is made up of at least one blade adjusting drive (20) fitted with at least one DC motor (23) that may be connected through a converter (24) to the electric grid (25), of a control unit (33) connected to the converter (24) and controlling and/or regulating the blade adjusting drive (20), and of a DC voltage source (31) assuring power supply to the blade adjusting drive (20) in the event of failure of the grid (25), wherein the DC voltage source (31) may be connected directly to the blade adjusting drive (20) or indirectly to it through the converter (24), the DC voltage source (31) being connected in priority manner indirectly through the converter (24) to the blade adjusting drive (20), the converter (24) being designed in a manner to allow converting both the AC voltage from the grid (25) and the DC voltage from the DC voltage source (31). 2. The wind-driven power-plant (10) as claimed in claim 1, wherein the DC voltage source (31) shall be connected to the blade adjusting drive (20) only when the converter (24) fails. 3. The wind-driven power-plant (10) as claimed in claim 1, wherein when connecting the DC voltage source (31) indirectly to the blade adjusting drive (20), said drive can be controlled by a malfunction mode which is stored in the control unit (33), or generated in the control unit (33), or fed into the control unit (33). 4. The wind-driven power-plant (10) as claimed in claim 1, wherein in the event the power-plant (10) is shut down, the electric grid (25) simultaneously has failed and the DC voltage source (31) is directly connected to the blade adjusting drive (20), the blade adjusting drive (20) can be controlled through the control unit (33) to start up the power-plant (10). 5. The wind-driven power plant as claimed in claim 1, wherein the DC voltage source (31) is a battery. 6. The wind driven power-plant (10) as claimed in claim 1, wherein the converter (24) comprises a rectifier (27), an intermediate DC circuit (28) and a DC chopper controller with at least one active switch. 7. The wind-driven power-plant (10) as claimed in claim 6, wherein the active switch is an IGBT. 8. The wind-driven power-plant as claimed in claim 6, wherein the DC voltage source (31) can be connected to the DC voltage intermediate circuit (28). 9. The wind-driven power-plant (10) as claimed in claim 1, wherein the rotor blade adjustment system comprises at least one angle encoder (37, 38) determining the instantaneous angle of the rotor blade (14) and transmitting it to the control unit (33). 10. The wind-driven power-plant (10) as claimed in claim 1, wherein the rotor blade adjustment system comprises at least two angle encoders (37, 38), the control unit (33) being designed in a manner that in the event of one angle encoder (37, 38) failing, said unit (33) shall switch ON the other angle encoder (37, 38). 11. The wind-driven power-plant (10) as claimed in claim 10, wherein the blade adjusting driver (20) comprises a drive side and an output/rotor-blade side, one of the angle encoders (37, 38) being mounted on the drive side and the other on the output/rotor-blade side of the blade adjusting drive (20).
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이 특허에 인용된 특허 (10)
Gerald Hehenberger AT, Drive mechanism for adjusting the rotor blades of wind power installations.
Doman Glidden S. (Granby CT) Kos Joseph M. (Holyoke MA) Harner Kermit I. (Windsor CT) DiValentin Eugene D. (Enfield CT) Healy Henry S. (Bloomfield CT), Variable speed wind turbine.
Feddersen,Lorenz; Siebenthaler,Eckardt; Andresen,Bj철rn, Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control.
Ahnert, Karsten; Demuth, Thomas; Hellmich, Steffen; Mauersberger, Markus; Männer, Andres, Pitch system for a wind energy system and method for operating a pitch system.
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