Wound field synchronous machine control system and method
First Claim
1. A flux observer for a wound field synchronous machine coupled to a direct current load, the flux observer comprising analog electronics, digital electronics, or a combination of analog and digital electronics configured receive machine field and direct current load currents from sensors and to to use the sensed machine field and direct current load currents to provide a magnetizing flux estimate.
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Abstract
A wound field synchronous machine control system comprises: an auxiliary winding for obtaining auxiliary AC voltage from the wound field synchronous machine; a phase controlled rectifier for rectifying the auxiliary AC voltage and supplying rectified DC voltage to the wound field synchronous machine; and a controller. The controller is configured for using a voltage signal across the auxiliary winding to obtain volt-second values of the auxiliary winding and using the volt-second values for firing angle control of switches of the phase controlled rectifier. Alternatively or additionally, the controller is configured for obtaining airgap flux values of the wound field synchronous machine and using the airgap flux values for firing angle control of switches of the phase controlled rectifier.
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Citations
6 Claims
- 1. A flux observer for a wound field synchronous machine coupled to a direct current load, the flux observer comprising analog electronics, digital electronics, or a combination of analog and digital electronics configured receive machine field and direct current load currents from sensors and to to use the sensed machine field and direct current load currents to provide a magnetizing flux estimate.
- 4. A method for observing flux in a wound field synchronous machine coupled to a direct current load, the method comprising sensing machine field and direct current load currents and using the sensed machine field and direct current load currents to provide a magnetizing flux estimate.
Specification