Title: Investigations on hybrid carrier PWM strategies for symmetrical multilevel inverter

Authors: K. Venkataramanan; B. Shanthi; S.P. Natarajan

Addresses: Department of Electrical and Electronics Engineering, Arunai Engineering College, Tiruvannamalai – 606603, Tamilnadu, India ' Centralized Instrumentation Service Laboratory, Annamalai University, Annamalai Nagar, Chidambaram – 602002, Tamilnadu, India ' Department of Electronics and Instrumentation Engineering, Annamalai University, Annamalai Nagar, Chidambaram – 602002, Tamilnadu, India

Abstract: A newly improved structure of multilevel inverter based on subordinate units for single phase seven level inverter is presented. This paper emphasis on analysing performance characteristics of novel multilevel inverter with reduced number of switches. The symmetrical reduced switch multilevel inverter is triggered by newly proposed modulation strategy termed as hybrid carrier pulse width modulation strategy and attempts to demonstrate the parameters such as THD, V_RMS and distortion factor using MATLAB SIMULINK and proposed strategy implemented as a prototype by FPGA.

Keywords: HCPWM; THD; total harmonic distortion; V_RMS; hybrid carrier PWM; pulse width modulation; symmetrical multilevel inverters; reduced switch inverters; simulation.

DOI: 10.1504/IJETP.2015.074165

International Journal of Energy Technology and Policy, 2015 Vol.11 No.4, pp.416 - 430

Received: 08 Apr 2015
Accepted: 28 Jul 2015
Published online: 13 Jan 2016 *

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