Title: Investigations on hybrid carrier PWM strategies for symmetrical multilevel inverter
Authors: K. Venkataramanan; B. Shanthi; S.P. Natarajan
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, VRMS and distortion factor using MATLAB SIMULINK and proposed strategy implemented as a prototype by FPGA.
Keywords: HCPWM; THD; total harmonic distortion; VRMS; hybrid carrier PWM; pulse width modulation; symmetrical multilevel inverters; reduced switch inverters; simulation.
Int. J. of Energy Technology and Policy, 2015 Vol.11, No.4, pp.416 - 430
Submission date: 27 Mar 2015
Date of acceptance: 28 Jul 2015
Available online: 12 Jan 2016