[특허]Generator excitation regulation using pulse width modulation

Infineon Technologies AG

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Generator excitation regulation using pulse width modulation

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-011/00 H02H-007/06 H02P-009/00 H02P-009/30 H02J-001/00 H02J-003/00
출원번호	US-0550602 (2014-11-21)
등록번호	US-9337761 (2016-05-10)
발명자 / 주소	Seidl, Christoph
출원인 / 주소	Infineon Technologies AG
대리인 / 주소	Shumaker & Sieffert, P.A.
인용정보	피인용 횟수 : 0 인용 특허 : 18

초록
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A system may be configured to provide a regulated generator field current to a generator to acquire a regulated output voltage of the generator. In one example, the system comprises a controller configured to provide an actuator control signal on the basis of an error signal, an actuator configured to provide on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated generator field current into the generator, the pulse-width modulated output signal having a duty cycle controlled by the ac...

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1. A system configured to provide a regulated generator field current to a generator to acquire a regulated output voltage of the generator, the system comprising: a controller configured to provide an actuator control signal on the basis of an error signal;an actuator configured to provide on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated generator field current into the generator, the pulse-width modulated output signal having a duty cycle controlled by the actuator control signal; andan error evaluator configured to provide the error signal based on a combination of a first deviation signal and a second deviation signal, wherein the first deviation signal represents a difference between a voltage setpoint value and a generator output voltage and the second deviation signal represents a difference between a duty cycle limit value and a signal representing the low-pass filtered actuator control signal. 2. The system of claim 1, wherein the duty cycle limit value represents a desired maximum duty cycle of the generator field current and the voltage setpoint value represents the regulated output voltage of the generator. 3. The system of claim 1, wherein the error evaluator is further configured to provide the error signal based on a weighted combination of the first deviation signal and the second deviation signal, wherein for weighted combining the error evaluator is configured to apply at least one of a first weighting factor to the first deviation signal and a second weighting factor to the second deviation signal before combining. 4. The system of claim 3, wherein the first weighting factor is inversely proportional to the first deviation signal and the second weighting factor is proportional to the second deviation signal. 5. The system of claim 3, wherein at least one of first weighting factor and second weighting factor includes lower and upper limitation values, with the lower limitation value, the error signal depending only on the second deviation signal, and with the upper limitation value, the error signal depending only on the first deviation signal, or vice versa. 6. The system of claim 3, wherein for weighted combining the error evaluator is configured to provide the error signal based on the first deviation signal multiplied by a square portion of the first weighting factor, and from the second deviation signal multiplied by a linear portion of the second weighting factor. 7. The system of claim 1, further comprising a low-pass filter connected between the controller and the error evaluator, the low-pass filter being configured to filter the actuator control signal supplied to the error evaluator. 8. The system of claim 7, wherein the generator has low-pass filter characteristics on the field current and the low-pass filter has characteristics that model the low-pass characteristics of the generator. 9. The system of claim 8, wherein the low-pass characteristics of the generator include a time constant. 10. A method configured to provide a regulated generator field current to a generator to acquire a regulated output voltage of the generator, the method comprising: providing an actuator control signal on the basis of an error signal;providing on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated generator field current into the generator, a generator output signal having a duty cycle controlled by the actuator control signal; andproviding the error signal based on a combination of a first deviation signal and a second deviation signal, wherein the first deviation signal represents a difference between a voltage setpoint value and a generator output voltage and the second deviation signal represents a difference between a duty cycle limit value and a signal representing the low-pass filtered actuator control signal. 11. The method of claim 10, wherein the duty cycle limit value represents a desired maximum duty cycle of the generator field current and the voltage setpoint value represents the regulated output voltage of the generator. 12. The method of claim 10, further comprising: providing the error signal based on a weighted combination of the first deviation signal and the second deviation signal, wherein for weighted combining at least one of a first weighting factor is applied to the first deviation signal and a second weighting factor to the second deviation signal before combining. 13. The method of claim 10, wherein the first weighting factor is inversely proportional to the first deviation signal and the second weighting factor is proportional to the second deviation signal. 14. The method of claim 10, wherein at least one of first weighting factor and second weighting factor includes lower and upper limitation values, with the lower limitation value, the error signal depending only on the second deviation signal, and with the upper limitation value, the error signal depending only on the first deviation signal, or vice versa. 15. The method of claim 10, further comprising: providing, for weighted combining, the error signal based on the first deviation signal multiplied by a square portion of the first weighting factor, and from the second deviation signal multiplied by a linear portion of the second weighting factor. 16. The method of claim 10, further comprising: a low-pass filtering configured to filter the actuator control signal supplied to the error evaluator. 17. The method of claim 16, wherein the generator has low-pass filter characteristics on the field current and the low-pass filter has characteristics that model the low-pass characteristics of the generator. 18. The method of claim 17, wherein the low-pass characteristics of the generator include a time constant. 19. A system configured to provide a regulated generator field current to a generator to acquire a regulated output voltage of the generator, the system comprising: a controller configured to provide an actuator control signal on the basis of an error signal;an actuator configured to provide on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated generator field current into the generator, the pulse-width modulated output signal having a duty cycle controlled by the actuator control signal; anda duty cycle limiter configured to limit the duty cycle of the pulse-width modulated output signal based on a difference between a duty cycle limit value and a signal representing the low-pass filtered actuator control signal. 20. The system of claim 19, further comprising a low-pass filter configured to low-pass filter the actuator control signal, wherein the generator has low-pass filter characteristics on the field current and the low-pass filter has characteristics that model the low-pass characteristics of the generator. 21. A method configured to provide a regulated, limited generator field current to a generator to acquire a regulated output voltage of the generator, the method comprising: providing an actuator control signal on the basis of an error signal;providing on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated, limited generator field current into the generator, a generator output signal having a duty cycle controlled by the actuator control signal; andlimiting the duty cycle of the pulse-width modulated output signal based on a difference between a duty cycle reference signal and a signal representing the low-pass filtered actuator control signal. 22. The method of claim 21, further comprising low-pass filtering configured to low-pass filter the actuator control signal, wherein the generator has low-pass filter characteristics on the field current and the low-pass filtering has characteristics that model the low-pass characteristics of the generator.

이 특허에 인용된 특허 (18)

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특허 상세정보

Generator excitation regulation using pulse width modulation

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Generator excitation regulation using pulse width modulation

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이 특허에 인용된 특허 (18)

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IPC 상세정보(version : 201201)

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