A NOVEL EQUAL SAMPLING SWITCHING STRATEGY FOR ACTIVE POWER FILTERS

This paper is concerned with the development of a simple and effective switching strategy suitable for current fed PWM active power filters. A modified equal sampling technique is proposed together with the per formance results based on the well known harmonic distortion factor. T he significant advantage of the new approach is that unlike the previo us methods, it does not require solution of complex non-linear harmoni c equations. Therefore, the computation burden is very low which means that practical implementation is realizable in a cost effective manne r without sacrificing performance.