CONTROL DEVICES TO HANDLE UNBALANCED LOADS FOR POWER SOURCES

Abstract: presented herein are systems, devices, and methods for handling unbalanced loads for power sources. a controller can receive a plurality of signals to be provided to a plurality of legs of an inverter. the controller can detect specific harmonic frequencies inside a frequency band for a first signal of the plurality of signals. certain reference frame reflected harmonics are caused by an unbalanced load and other certain harmonics are due to generator spatial harmonics. both types of harmonics can be suppressed. the controller can determine, responsive to the identification of the unbalanced load or generator harmonics, an adjustment value in accordance with a resonant gain to be applied within the frequency band of the first signal. the controller can modify the first signal using the adjustment value to generate a second signal to provide to a leg of the plurality of legs of the inverter.

Inventor(s): Timothy M Lewis, Denise Maria Christine Athaide

CPC Classification: H02J3/381 (Arrangements for parallely feeding a single network by two or more generators, converters or transformers)

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