System and method for reducing harmonic distortion

摘要

A method is disclosed including but not limited to supplying a voltage waveform from a higher power electrical bus to a lower power electrical bus; sensing on the lower power electrical bus, a deviation from a sinusoidal voltage waveform in the voltage waveform supplied from the higher power electrical bus; generating a correction current to adjust the deviation in the voltage on the lower power bus to a substantially sinusoidal voltage waveform; and filtering the correction current to substantially attenuate the correction current from propagating through the filter from the lower power electrical bus to the higher power electrical bus. A system is disclosed for performing the method.

主权项

1. A method comprising:
supplying a higher voltage waveform from a higher power electrical bus to a lower power electrical bus through a transformer to form a lower power voltage; generating an in-phase current from the lower power voltage using a current transformer; sensing on the lower power electrical bus, wherein the lower power electrical bus provides power to a substantially resistive load, a deviation from a sinusoidal voltage waveform in the lower power voltage waveform supplied from the higher power electrical bus; generating an in-phase correction current in an active filter using the in-phase current from the current transformer; supplying the in-phase correction current opposing an in-phase current on the lower power electrical bus to adjust the deviation in the voltage on the lower power bus to a substantially sinusoidal voltage waveform thereby proving a cleaned-up lower power voltage on the lower power electrical bus; stepping up the cleaned-up lower power voltage to a highest voltage using a transformer; supplying the highest voltage to a load; and filtering the correction current to substantially attenuate the correction current from propagating through the filter from the lower power electrical bus to the higher power electrical bus.