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Innovativc Systems De»ign and Engineering ISSN 2222-1727 (Paper) ISSN 2222-2871 (Online)

Vol.4. No.7, 2013 - National Confercnee on EmergingTrends in Electrical. Instrumentation & Communication Engineering

Matlab /Simulink Based-analysis of Photovoltaic Array Fed Multilevel Boost Comerter

Praveen ban sal¹

Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal (M.P)

'Email-pbansal44faredifTmail.com

Abstract

The inereasing private sectors are focusing employment of eco friendly renewable/green power technologies like PV Cells, Fuel CelLs, Wind turbinę to meet tire growing power demand. This paper presents tire analysis and operation of PV system using Multilevel DC to DC Boost Comerter Topology .The DC to DC Multilevel Boast comerter Ls based on one inductor, one switch, 2N-ldiodes and 2N-1 capacitors, for an Nx comerters, it is a boast comerter able to control and maintain tire same vohage in all the N output levels and able to control the input current. Tire proposed model and tlieir performance are evaluated for varying loads in MATLAB/Simulink environment.

Keywords - PV array, Multilevel boost comerter,Matlab, simulink 1. Introduction

Increased energy utilization and global pollution awareness have madę greenfenewable power morę and morę important for stand alone as well as distributed generation. Wind turbines, Photovoltaic and Fuel Cells are different types of green power technologies. Photovoltaic systems have been extensively einployed for large power generation around tire wliole world in recent decades. The conversion of solar energy into electric energy Ls performed by means of photovoltaic cells.

In order to adapt tire output Yoltage of the energy supplies/storage systems tlie medium voltage level, boosting of tlie DC Yoltage is required. For large voltage step-up ratias this task is advantageously performed by DC- DC converters[l ]. Since tlie PV array delivers Dc power, it must be imerted to AC and stepped-up to be able to use for liouseliold applications as well as for distributed generation and output yoltage Ls regulated desired level. Tlierefore a suitable Power electronic interface is required between PV array and load, with tlie capabilities of balance output yoltage.

Above task can be achieyed by coruiecting a DC-DC converter with yoltage gain to tlie PV array .The proposed model of renewable energy fed Multilevel Boost comerter using Matlah¹ simulink is given Figue( 1).

PROPOSED MATLAB .SIMULINK MODEL OF PV ARRAY FED MULTILEYL BOOST CONYERTER

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