Ecology, Environment and Conservation Paper

Vol 23, Sept. Suppl. Issue 2017; Page No.(210-214)

A NOVEL TECHNIQUE FOR STANDALONE PV SYSTEM USING 7-LEVEL MULTILEVEL INVERTER WITH REDUCED NUMBER OF SWITCHES

N.I. Maheshwari and M. Chandrasekaran

Abstract

Multilevel inverters are used widely in many applications due to their increased power rating reduced electromagnetic interference and harmonics. However, the increased number of switches in the conventional configuration poses a limitation to its wide range application due to its big size and the huge price of the inverter. This novel, new H-Bridge multilevel inverter with reduced number of switches lessens the above problem. The configuration of the PV system is based on the multi-string technology and the maximum power point is obtained using PSO Algorithm. The duty cycle of the boost converteris controlled by the output of the MPPT tracker. The PDPWM based modulation technique is implemented to control this power converter. The results are validated through the harmonic spectrum of the FFT window by using Matlab/Simulink.

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