Active Power Filtering With a Low Switching Frequency Converter

This article focuses on the relationship between the controller and the control delay of the low switching frequency converter with active power filtering function. This article also investigates the effect of the current transformer (CT) probe on the measured signals for a long-distance compensation of the nonlinear loads. A one-step deadbeat controller under consideration of the CT model is presented to meet the demands with the control delay compensation and the correction of the distorted measured signals. Finally, the laboratory test results will be used to support the aforementioned analysis.