Volume : III, Issue : V, May - 2013

Three Stage Cascaded Quasi–Z–Source Inverter System for Renewable Energy Applications

Nisha K. C. R, T. N. Basavaraj

Abstract :

This paper is devoted to a new topology derived from traditional ZSI called cascaded Quasi Z–source inverter (qZSI) for a single phase photovoltaic (PV) system. The cascaded is derived by adding one diode, one inductance, two capacitances to qZSI. Due to the cascaded structure and qZSI topology, the proposed system inherits all the advantage of impedance inverter which can realize buck/boost inversion and power conditioning in a single stage with improved reliability, lower component rating constant dc current from source and good power quality. In addition the cascaded solution reduces the shoot through duty cycle by 25% at the same voltage boost factor. Theoretical analysis of three stage qZSI in shoot through and non–shoot through operating modes are described. Simulation results are presented to validate the proposed system.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Nisha K.C.R, T. N. Basavaraj Three Stage Cascaded Quasi-Z-Source Inverter System for Renewable Energy Applications Indian Journal of Applied Research, Vol.III, Issue.V May 2013

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