New Approach for Design of Shunt Active Power Filter for Power Quality Improvement in a Three Phase Three Wire System

Use of power electronic-based load has increased in the resent decade. These loads draw non-sinusoidal currents and voltages from the utility supply generating harmful harmonics. Injection of harmonic currents and voltages into the utility supply affect the utility supply systems and customer's equipment connected at point of common coupling Issues of power quality has become an important issue to both users and distributers of electrical power. Active power filters have proven to be an efficient method for power quality improvement and reactive power compensation in a system with harmonic related problems. This work present approach for design of shunt active power filter for harmonic compensation. Different traditional and modern harmonic solutions topologies are presented. Shunt active power filter is the most famous and used type of filter hence need to improve its performance. The generation of reference signal and control of shunt active power filter is considered in this work. Deadbeat control of APF in alpha-beta reference frame and PI control for DC link voltage is presented, considering advantages of each controller. Three phase three wire system supplying nonlinear load is used to test performance of the proposed filter. It is implemented on MATLAB\Simulink and results discussed.