Open AccessDesign of Z Source Inverter based VSWECS with Improved PWM Control
Author(s) -
T. Muthukumari,
P. Selvaraj,
L.Pattathu rani,
Prajith Prabhakar
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.a1003.0881019
Subject(s) - pulse width modulation , modulation index , voltage , voltage source , control theory (sociology) , capacitor , inverter , z source inverter , inductor , matlab , electrical impedance , computer science , output impedance , electronic engineering , engineering , electrical engineering , control (management) , artificial intelligence , operating system
With rapid development in Wind Energy Conversion Systems (WECS), various methods have been used to increase power generation from wind. In order to reach voltage gain as maximum in a variable speed WECS, an improved PWM method through varying shoot through time for Impedance source inverter is implemented in this paper. For a given modulation index, the correlation of voltage gain with capacitor voltage, and the device stress are analyzed in detail. For ‘various shoot through time ,the simulation results of voltage across capacitor, current through inductor ,output current and output voltage are obtained by using Simpower system tool in MATLAB/ Simulink and compared. The results have been confirmed for the developed experimental model