METHOD AND SYSTEM FOR TRANSFORMER CONTROL
First Claim
1. A method to balance transformer flux of a plurality of transformers connected to a plurality of converters, each transformer having an associated converter, the method comprising:
- determining a reference flux value;
measuring an actual flux value for each transformer;
developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value; and
in response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, generating a plurality of switching signals to reduce each of the variance values by malting available the plurality of switching signals to each of the associated plurality of converters.
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Abstract
A method to balance transformer flux among a plurality of transformers is disclosed. The plurality of transformers is connected to a plurality of converters, each transformer having an associated converter. The method comprises determining a reference flux value, measuring an actual flux value for each transformer, and developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value. In response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, the method proceeds by generating a plurality of switching signals to reduce each of the variance values by making available the plurality of switching signals to each of the associated plurality of converters.
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Citations
21 Claims
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1. A method to balance transformer flux of a plurality of transformers connected to a plurality of converters, each transformer having an associated converter, the method comprising:
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determining a reference flux value; measuring an actual flux value for each transformer; developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value; and in response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, generating a plurality of switching signals to reduce each of the variance values by malting available the plurality of switching signals to each of the associated plurality of converters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control system to balance transformer flux among a plurality of transformers connected to a plurality of converters, comprising:
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a flux estimator configured to estimate a reference flux value; a plurality of flux monitors in signal communication with each transformer, each flux monitor configured to measure an actual flux value of each transformer; a plurality of flux comparators in signal communication with the flux estimator and each flux monitor, the plurality of flux comparators configured to determine a plurality of variance values between the reference flux value and each actual flux value; a plurality of flux regulators in signal communication with each of the flux comparators, the plurality of flux regulators configured to develop a plurality of voltage command signals responsive to each variance value; and a modulator in signal communication with the plurality of flux regulators and the plurality of converters, the modulator responsive to each voltage command signal and configured to generate and make available a switching signal to each converter; wherein the switching signal is configured to reduce each variance value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification