A Study on Series Hybrid Active Power Filter for Harmonic Elimination using p-q Theory

Abstract: Harmonics badly influence the power quality of electric network, the active power filter (APF) are widely used for effectively filter out all harmonics where filtering is not effected by system parameters. In the recent development, with an objective to reduce inverter capacity, the Series Hybrid Active Power Filter (SHAPF) has been taken into account increasingly. This paper presents a complete design of SHAPF working with control strategy based on p-q theory, very popularly used in reference generation. The practical realization of Shunt Passive Filter, PWM Inverter, Switching ripple filter and control method are discussed in detail. The validity of the proposed scheme is verified by the simulation study. In simulation study applications of SHAPF for harmonic elimination is presented.

Keywords: Active filters, SHAPF, p-q theory