Method and apparatus for assembling electrical machines
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-009/00
H02P-009/04
H02P-003/00
H02P-009/06
H02P-015/00
출원번호
UP-0072536
(2008-02-26)
등록번호
US-7745949
(2010-07-19)
발명자
/ 주소
Yang, Wenqiang
Lu, Zhigang
Klodowski, Anthony Michael
Teichmann, Ralph
Wang, Changyong
Weng, Haiqing
Yuan, Xiaoming
출원인 / 주소
General Electric Company
대리인 / 주소
McGinness, Esq., James
인용정보
피인용 횟수 :
6인용 특허 :
20
초록▼
A method of assembling an electrical machine includes programming at least one processor with a stator flux vector estimation scheme. The electrical machine has a stator at least partially extending around a rotor. The electrical machine is electrically coupled to an electric power system. The elect
A method of assembling an electrical machine includes programming at least one processor with a stator flux vector estimation scheme. The electrical machine has a stator at least partially extending around a rotor. The electrical machine is electrically coupled to an electric power system. The electric power system transmits at least one phase of electric power to and from the electrical machine with at least partial power conversion. The stator flux vector estimation scheme is programmed to generate at least one stator back-electromagnetic force (back-EMF) signal and to generate at least one stator flux vector signal using the at least one stator back-EMF signal. The at least one stator flux vector signal at least partially represents an estimated rotor position. The method also includes coupling at least one output device in data communication with the at least one processor.
대표청구항▼
What is claimed is: 1. A method of assembling an electrical machine, wherein the electrical machine has a stator at least partially extending around a rotor, wherein the electrical machine is electrically coupled to an electric power system, wherein the electric power system transmits at least one
What is claimed is: 1. A method of assembling an electrical machine, wherein the electrical machine has a stator at least partially extending around a rotor, wherein the electrical machine is electrically coupled to an electric power system, wherein the electric power system transmits at least one phase of electric power to and from the electrical machine with at least partial power conversion, said method comprising: programming at least one processor with a stator flux vector estimation scheme to generate at least one stator back-electromagnetic force (back-EMF) signal and to generate at least one stator flux vector signal using the at least one stator back-EMF signal, wherein the at least one stator flux vector signal at least partially represents an estimated rotor position; and coupling at least one output device in data communication with the at least one processor. 2. A method in accordance with claim 1 wherein said programming at least one processor with a stator flux vector estimation scheme comprises programming a first stator magnetic flux scheme to: receive at least one stator voltage signal from at least one voltage sensor; perform online compensation of the at least one stator voltage signal based on a known voltage sensor error; receive at least one stator current signal from at least one current sensor; and perform online compensation of the at least one stator current signal based on a known current sensor error. 3. A method in accordance with claim 1 further comprising programming the at least one processor such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range. 4. A method in accordance with claim 3 wherein programming the at least one processor such that the electrical machine remains electrically connected comprises programming the at least one processor such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system decreasing below a predetermined range including approximately zero volts, thereby facilitating one of low voltage ride through (LVRT) and zero voltage ride through (ZVRT). 5. A method in accordance with claim 3 wherein programming the at least one processor such that the electrical machine remains electrically connected comprises programming the at least one processor to seamlessly transition between the first magnetic flux estimation scheme and a second magnetic flux estimation scheme at least partially as a function of at least one of: at least one signal substantially representative of at least one predetermined electrical machine operating condition; and at least one signal substantially representative of at least one predetermined electric power system operating condition. 6. A method in accordance with claim 5 further comprising programming the second magnetic flux estimation scheme to mitigate integrator drift with at least one closed-loop correction. 7. A method in accordance with claim 1 further comprising programming the at least one processor with a redundant rotor speed measurement scheme comprising: programming the rotor position estimation system to determine rotor speed; coupling at least one of a high resolution encoder and a low resolution encoder to at least a portion of the electrical machine; and coupling at least one of the high resolution encoder and the low resolution encoder in electronic data communication with the at least one processor. 8. A method in accordance with claim 1 further comprising programming the at least one processor with one of: a rotor current estimation scheme that is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position; and a rotor flux vector estimation scheme that is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position. 9. A rotor position estimation system for an electrical machine, the electrical machine having a stator at least partially extending around a rotor, wherein the electrical machine is configured to be electrically coupled to an electric power system, wherein the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine with at least partial power conversion, said rotor position estimation system comprising: at least one processor programmed with a stator flux vector estimation scheme, wherein said stator flux vector estimation scheme is programmed to generate at least one stator back-electromagnetic force (back-EMF) signal, wherein said stator flux vector estimation scheme is further programmed to generate at least one stator flux vector signal using the at least one stator back-EMF signal, wherein the at least one stator flux vector signal at least partially represents an estimated rotor position; and at least one output device coupled in data communication with said at least one processor. 10. A rotor position estimation system in accordance with claim 9 further comprising said at least one processor programmed with a rotor current estimation scheme coupled in data communication with said stator flux vector estimation scheme, wherein said rotor current estimation scheme is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position. 11. A rotor position estimation system in accordance with claim 9 further comprising said at least one processor programmed with a rotor flux vector estimation scheme coupled in data communication with said stator flux vector estimation scheme, wherein said rotor flux vector estimation scheme is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position. 12. A rotor position estimation system in accordance with claim 9 further comprising an online sensor offset estimation scheme programmed within said at least one processor to compensate at least one signal transmitted from at least one sensor while electric power is being transferred between the electric power system and the electrical machine. 13. A rotor position estimation system in accordance with claim 9 further comprising at least one phase-locked loop scheme programmed within said at least one processor to determine and transmit an estimated rotor position signal. 14. A rotor position estimation system in accordance with claim 9 further comprising at least one coordinate transformation scheme programmed within said at least one processor to receive at least one of a first stator voltage signal, a first stator current signal, a first stator flux signal, and a first rotor current signal referenced to a first coordinate system and generate at least one of a second stator voltage signal, a second stator current signal, a second stator flux signal, and a second rotor current signal referenced to a second coordinate system. 15. A rotor position estimation system in accordance with claim 9 wherein said at least one processor is programmed to facilitate the electrical machine remaining electrically connected to a three-phase alternating current electric power system during and subsequent to said at least one processor receiving a signal substantially representative of a voltage amplitude of at least one phase of the three-phase alternating current electric power system decreasing to at least one of: a predetermined low voltage threshold, thereby facilitating low voltage ride through (LVRT); and approximately zero volts, thereby facilitating zero voltage ride through (ZVRT). 16. A rotor position estimation system in accordance with claim 9 further comprising at least one algorithm programmed within said at least one processor to estimate a rotor position and a rotor speed using at least one of: at least one rotor electrical current signal; at least one stator voltage measurement signal; at least one stator current measurement signal; at least one stator resistance signal; at least one stator inductance signal; at least one rotor flux estimation signal; and at least one stator flux estimation signal. 17. A wind turbine comprising: at least one electric power generator configured to be electrically coupled to an electric power system, wherein the electric power system is configured to transmit at least one phase of electric power to and from said at least one electric power generator, said at least one electric power generator comprises a stator at least partially extending around a rotor; and a rotor position estimation system comprising: at least one processor programmed with a stator flux vector estimation scheme, wherein said stator flux vector estimation scheme is programmed to generate at least one stator back-electromagnetic force (back-EMF) signal, wherein said stator flux vector estimation scheme is further programmed to generate at least one stator flux vector signal using the at least one stator back-EMF signal, wherein the at least one stator flux vector signal at least partially represents an estimated rotor position; and at least one output device coupled in data communication with said at least one processor. 18. A wind turbine in accordance with claim 17 further comprising said at least one processor programmed with a rotor current estimation scheme coupled in data communication with said stator flux vector estimation scheme, wherein said rotor current estimation scheme is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position. 19. A wind turbine in accordance with claim 17 further comprising said at least one processor programmed with a rotor flux vector estimation scheme coupled in data communication with said stator flux vector estimation scheme, wherein said rotor flux vector estimation scheme is programmed to receive the at least one stator flux vector signal and generate at least one rotor current signal, wherein the at least one rotor current signal at least partially represents the estimated rotor position. 20. A wind turbine in accordance with claim 17 wherein said at least one processor is programmed to facilitate the electrical machine remaining electrically connected to a three-phase alternating current electric power system during and subsequent to said at least one processor receiving a signal substantially representative of a voltage amplitude of at least one phase of electric power is substantially representative of the at least one phase of electric power decreasing to at least one of: a predetermined low voltage threshold, thereby facilitating low voltage ride through (LVRT); and approximately zero volts, thereby facilitating zero voltage ride through (ZVRT).
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