Research Article | OPEN ACCESS
Effect of DC Link Fluctuations on Harmonic Spreading Effect in Voltage Source Inverter Fed Three Phase Induction Motor Drives
T.S. Sivarani and S. Joseph Jawhar
Department of EEE, Arunachala College of Engineering for Women, Vellichanthai-629203, India
Research Journal of Applied Sciences, Engineering and Technology 2016 9:983-987
Received: January 5, 2016 | Accepted: February 16, 2016 | Published: May 05, 2016
Abstract
The aim of the study is to analyze the effect of DC link fluctuations on the output voltage of the inverter. Voltage Source Inverters (VSI) plays a dominant role in the industrial world. Most of the industries use rectifiers to convert single phase AC supply to DC supply. DC supply is fed to the Voltage Source Inverter (VSI) through a DC link capacitor. The capacitor decides the quality of output fed to the Voltage Source Inverter. Six pulses are given to the Voltage Source Inverter by means of MCBRCPWM (Multiple Carrier Based Random Carrier Pulse Width Modulation) technique. The output of Voltage Source Inverter is fed to a three phase squirrel cage induction motor. The investigation of MCBRCPWM with different capacitor values provided in the DC link has been effectively discussed. The results of harmonic spectra and Total Harmonic Distortion (THD) are given in the paper. Simulation results prove that as the value of capacitor increases, the evaluation parameters such as Total Harmonic distortion, Fundamental Voltage and Harmonic Spread Factor (HSF) are improved.
Keywords:
DC link, harmonic spread factor, random pulse, width modulation, voltage source inverters,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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