Title :
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
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;
Conference_Titel :
Renewable Energy and Sustainable Energy (ICRESE), 2013 International Conference on
Conference_Location :
Coimbatore
DOI :
10.1109/ICRESE.2013.6927793
