Applying Adaptive Notch Filter in αβ-coordinate to improve 3-phase 4-wire shunt APF performance under non-ideal PCC voltage

摘要

In this paper, the 3-phase 4-wire Shunt Active Power Filter (ShAPF) dealing with non-ideal Point of Common Coupling (PCC) voltages will be presented. The Adaptive Notch Filter (ANF) processes those non-ideal PCC voltages directly in αβ-coordinate where instantaneous power theory is applied. The simulation results proved that the ANF successfully facilitates the ShAPF comparing to the conventional dq-filter method.