[특허]Electrical power conversion system and method

Electrical power conversion system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03B-013/00 H02P-006/00 H02M-007/54 H02J-003/36 B60L-008/00
출원번호	US-0498836 (2010-09-29)
등록번호	US-9473046 (2016-10-18)
우선권정보	EP-09171707 (2009-09-29)
국제출원번호	PCT/EP2010/064449 (2010-09-29)
§371/§102 date	20120806 (20120806)
국제공개번호	WO2011/039249 (2011-04-07)
발명자 / 주소	Spooner, Edward Taaffe, David
출원인 / 주소	Openhydro IP Limited
대리인 / 주소	Gardner, Linn, Burkhart & Flory, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 72

초록 ▼

A system and method for electrical power conversion, with the system being intended for use in converting a high voltage DC power output from a turbine generator to an AC power signal that is suitable for connecting to an AC power grid. The system utilizes a mechanical coupling between a synchronous motor driving a synchronous generator in order to provide isolation, as well as allowing for control of the real power output by the system.

대표청구항 ▼

1. A power conversion system for converting a high voltage DC power input from one or more turbine generators to an AC grid supply power output, the system comprising: a line voltage input for receiving said high voltage DC power input exclusively from said one or more turbine generators;a converter module for converting said high voltage DC power input to an AC power output;a synchronous motor, said synchronous motor driven by said AC power output provided by said converter module; anda synchronous generator, separate from said converter module, operable to provide said AC grid supply power output for connection to a grid supply;wherein said synchronous generator is driven by said synchronous motor, and wherein said converter module is a thyristor bridge inverter coupled between said line voltage input and said synchronous motor to provide said AC power output to said motor to drive said motor, and wherein said synchronous motor is coupled between said thyristor bridge inverter and said synchronous generator to drive said synchronous generator and separate said thryistor bridge inverter from said synchronous generator to isolate said thyristor bridge inverter from said gird supply. 2. The system as claimed in claim 1, wherein said thyristor bridge inverter is a polyphase thyristor bridge inverter. 3. The system as claimed in claim 2, wherein the phase number of said synchronous motor is equal to the number of phases in the polyphase thyristor bridge inverter. 4. The system as claimed in claim 2, wherein the converter module further comprises a transformer for converting the output of the polyphase thyristor bridge inverter to AC power having a phase suitable for driving said synchronous motor. 5. The system as claimed in claim 1, wherein said thyristor bridge inverter is a three-phase thyristor bridge inverter. 6. The system as claimed in claim 1, wherein the system further comprises a controller, the controller operable to control a real power component of said AC grid supply power output by adjusting the phase angles of the thyristor bridge inverter to vary the DC line voltage input to regulate the operation of said one or more turbine generators. 7. The system as claimed in claim 1, wherein said synchronous motor is a field winding type synchronous motor, the system comprising a controller operable to control a real power component of said AC grid supply power output by adjusting the field winding excitation of the synchronous motor to vary the DC line voltage input to regulate the operation of said one or more turbine generators. 8. The system as claimed in claim 1, wherein the system further comprises an auxiliary load circuit provided in parallel with said synchronous motor, wherein said system is operable to supply at least a portion of the AC power output provided by said converter module to said auxiliary load circuit. 9. The system as claimed in claim 8, wherein the auxiliary load circuit comprises an energy storage device to store AC power from said converter module, wherein said energy storage device is further operable to selectively provide AC power stored in the device to said synchronous motor. 10. The system as claimed in claim 8, wherein the auxiliary load circuit comprises a load bank. 11. A method for converting a high voltage DC power input from one or more turbine generators to an AC grid supply power output, comprising the steps of: providing to a line voltage input, a high voltage DC power input received exclusively from one or more turbine generators;converting said high voltage DC power input to an AC power output using a thyristor bridge inverter;driving a synchronous motor with said converted AC power output;driving a synchronous generator with the output of said synchronous motor, wherein said synchronous generator is operable to output said AC grid supply power output; andcontrolling a real power output of the synchronous generator by adjusting the phase angles of the thyristor bridge inverter to vary the DC line voltage input to adjust the operation of said one or more turbine generators. 12. The method of claim 11, wherein said controlling step comprises adjusting the excitation of the synchronous motor to vary the line voltage of the DC power input. 13. The method of claim 11, wherein the method further comprises the step of diverting at least a portion of said converted AC power output to an auxiliary load circuit when the output of the synchronous generator exceeds a required level.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Electrical power conversion system and method 원문보기

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