Design and Development of an Adaptive Shunt Active Power Filter for Harmonic Mitigation and Reactive Power Compensation in Power System

Abstract

This paper deals with the implementation of a reduced multilevel connections (RMC) as Voltage Source Converter (VSC) in Shunt Active Power Filter (SAPF) for harmonic mitigation in Power system. The design mainly focuses on the voltage source converter of SAPF. The developed modular structure produces 9,11,13,15,17,19,21,23,25,27,29,31 output levels using symmetric and asymmetric PV sources. This paper mainly focuses on a robust design of power circuit (RMC) and control circuit (SHE controller) for obtaining required voltage levels. Hence, to design a 27-level inverter, the traditional clamped topology requires 52 switches, the Cascaded H bridge (CHB) topology requires 52 switches and in the proposed RMC only 12 IGBTs are needed to produce 27 level. An added advantage of these topologies are they produce less total harmonic distortion by increasing the output levels. The design includes a comparison of 27-level reduced multilevel connections (RMC) topologies suitable for asymmetric input sources from solar photovoltaics (SPV). Further the loss calculation and the cost analysis are done to make the inverter superior than the conventional topologies. The implementation of RMC with the selective harmonic elimination method mitigates harmonics in the system. The proposed system is modeled using MATLAB/Simulink. An Experimental setup of the suggested SAPF is established and experimentally investigated. A 3 KWp solar PV plant is used to feed the DC input to the developed prototype. Based on the findings, it can be concluded that the suggested inverter reduces the harmonics, compensates reactive power, improves power quality, lessens the components, lessens the size and reduces the cost.