A single-phase series active power filter design

Abstract

Abstract This paper presents a new control approach for harmonic control and its practical implementation for a single-phase hybrid active power filter. It is a combined system of shunt passive filter and small rated series active filter. For the control of the active power filter a simple digital controller is used. This simplification is made by without calculating the load current for opposite harmonic component injection to the system. For active power filter control a sinusoidal pulse width modulation is developed and the modulation index is selected by calculating the DC bus voltage of the active filter through a digital controller based on Proportional-Integral-Derivative principle. Prototype hardware is developed and tested. Simulation and experimental results show that the proposed active power filter topology is capable of compensating the load current and voltage harmonic specijied by IEEE.