Generator excitation regulation using pulse width modulation
First Claim
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; and
an 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.
1 Assignment
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Accused Products
Abstract
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 actuator control signal, and an error evaluator configured to provide the error signal based on a combination of a first deviation signal and a second deviation signal.
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Citations
22 Claims
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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:
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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; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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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:
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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; and providing 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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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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:
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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; and a 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. - View Dependent Claims (20)
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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:
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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; and limiting 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. - View Dependent Claims (22)
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Specification