Analysis on Modulation Techniques of an AC drive with Respect to Harmonic Content and Efficiency

EasyChair Preprint 689

Abstract

Inverters have become popularly used in the field of Power Electronics for different applications. The presence of harmonics in the output voltage of the inverters have led to many research works being conducted. Different topologies were applied to mitigate this inverter drawback, thus improving the efficiency of the inverter. SPWM, HCCPWM and MSPWM techniques have been discussed and implemented in Matlab/Simulink software. Full-bridge single phase topology is used. Simulations results are presented. The common parameters between the three techniques are modulation index and the number of pulses. Minimum Total Harmonic Distortion (THD) is used as a criterion key performance indicator (KPI) in comparing the output results generated from all the techniques investigated and verified. The results show that Modified Sinusoidal PWM technique produce better results as compared to SPWM and HCCPWM techniques. The results generated from MSPWM technique have reduced harmonics and the output voltage is more sinusoidal without the use of an ideal switching method. This paper demonstrated the output voltage performance comparison between SPWM, HCC and MSPWM implemented in the unipolar inverter.

Keyphrases: Hysteresis-band Current Control (HCC), Phase Shifted Carrier PWM (PSCPWM)., Selective Harmonic Elimination (SHE), Sinusoidal Pulse Width (SPWM), Space Vector Pulse Width (SVPWM)

@booklet{EasyChair:689,
  author    = {Josiah Makhubele and Kingsley A. Ogudo},
  title     = {Analysis on Modulation Techniques of an AC drive with Respect to Harmonic Content and Efficiency},
  howpublished = {EasyChair Preprint 689},
  year      = {EasyChair, 2018}}