THD performance of single phase five level inverter using proportional resonant and harmonic compensators current controller

摘要

This paper observe the total harmonic distortion (THD) performance of single phase five level inverter using proportional resonant (PR) and harmonic compensators current controller. The THD when adding PR current controller was 1.6% at first. After more functions were added to the PR current controller to reduce the THD at the 3suprd/sup, 5supth/sup and 7supth/sup harmonic orders, the THD of the 3suprd/sup harmonic order was reduced from 0.45% to 0.1% while the 5supth/sup and 7supth/sup harmonic orders were reduced from 0.6% and 0.43% to 0.25% and 0.4% respectively. The development and simulation is performed using Matlab/Simulink. The simulation result is performed by using Fast Fourier Transform analysis (FFT) for the harmonics captured.