Design and Real Time Implementation of Three Phase Shunt Active Power Filter Using Indirect Current Control Technique

Shunt active power filters (SAPF) have been extensively studies with many strategies for extracting the three-phase reference currents. This paper presents one of simple identification strategy to enhance the performance of SAPF. The proposed algorithm does not need a lot of current and voltage sensors compared with other techniques. The indirect current control technique (ICC) with the proportional-integral controller (PI) allows a reference current to be perfectly generated in order to compensate the reactive power and remove harmonic distortion. For the inverter control, switching signals are generated by a simple hysteresis controller. Furthermore, this simplified system scheme improves the accuracy of the SAPF and helps for experimental implementation. Obtained results based on Matlab/Simulink software and dSPACE 1103 AutoBox hardware verify the effectiveness of ICC technique both for harmonic compensation and power factor improvement.