Performance Analysis of 3 – level Shunt Active Power Filter using Different Control Strategies
Department of Electrical Engineering Nirma University Institute of Technology Ahmedabad, Gujarat, India
ABSTRACT
A load is called as non-linear when with application of applied voltage the impedance is changed, this changing impedance will make current a non-sinusoidal one even when sinusoidal voltage is applied. The main objective of this paper is to address one of the power quality issues i.e. supply side current distortion due to which voltage distortion is also seen at distribution system. This paper presents the design of shunt active filter (SAPF) based three level inverter which provides balanced three phase source current with improved power factor. The control strategies such as hysteresis current control and multicarrier based PWM technique are used for control of SAPF and comparing the THD of source current at PCC. The simulation results in MATLAB/Simulink validate the control strategy applied for SAPF.
