Comparative analysis of PWM methods of Quasi Z source Inverter

Author

Godavarthi, Naga Kishore ; Rama Lakshmi, P. Sri ; Sree Devi, V.T.

Author_Institution

VIT Univ., Chennai, India

fYear

2013

fDate

5-6 Dec. 2013

Firstpage

86

Lastpage

90

Abstract

In this paper, a Quasi Z-source Inverter (QZSI) drawn from Z Source Inverter (ZSI) is analysed and designed. Two different pwm control techniques i.e. simple boost PWM control with sine carrier and simple boost PWM control with triangular carrier are used for producing the pulses for quasi z-source inverter. It employs an impedance network which couples the renewable energy source (DC source or battery) and the inverter to achieve voltage boost and inversion. Hence it is used in grid connected PV systems. It is observed that sine PWM control gives more boosted voltage compared to triangular pwm control for same modulation index and the results are verified by using Matlab/Simulink.

Keywords

PWM invertors; photovoltaic power systems; PWM control techniques; PWM method; boost PWM control; boosted voltage; grid connected photovolatic systems; quasiZ source inverter; renewable energy source; sine PWM control; sine carrier; triangular carrier; Capacitors; Impedance; Inductors; Inverters; Pulse width modulation; Voltage control; Pulse width modulation techniques; Quasi z-source inverter; Shoot through duty ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Renewable Energy and Sustainable Energy (ICRESE), 2013 International Conference on

Conference_Location

Coimbatore

Type

conf

DOI

10.1109/ICRESE.2013.6927793

Filename

6927793