Performance Analysis of 3 – level Shunt Active Power Filter using Different Control Strategies
Keywords:
PCC (Point of common coupling), SAPF, IRP Theory, LPF (low pass filter), Uninterruptible power supplies (UPS)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.