A New Three Phase Symmetrical Multilevel Converter for Grid Connected System Using PV Source
Author(s):
D RAJESH, S.PAPA RAO
Keywords:
Multilevel Inverter, MATLAB, THD and PV Technique.
Abstract
in this paper a new three phase symmetrical multilevel converter for grid connected system using PV source. The renewable energy sources are application of the distrib-uted generation (DG) in the distribution system acquired more attention .The Distribution generation systems are powered by micro sources such as fuel cells, photovol-taic (PV) systems, and batteries. PV distributed system in which the solar source is low dc input voltage interfaced to grid using front-end conversion.Three phase Cascaded H-Bridge Sevenlevel inverter is in¬terfaced with low frequency transformer with multiplePV Source is proposed.Nowadays multilevel inverter (MLI) plays a vital role in the field of power electronics and be¬ing widely used in many industrial and commercial appli¬cations. Moreover the advantages like high quality power output, low switching losses, low electro-magnetic inter¬ference (EMI) and high output voltage made multilevel inverter as a powerful solution in converter topology. The proposed topology is suitable for any number of lev¬els. When the levels are increased the number of switches used is reduced compared to the conventional cascaded H-bridge multilevel inverter. This paper is particularly fo¬cused on the 13-level inverter with the requirement of low switching components. In the proposed topology only 7 switches were used. The harmonic reduction is achieved by selecting appropriate switching angles. It shows hope to reduce initial cost and complexity hence it is opt for grid applications.
Article Details
Unique Paper ID: 144006

Publication Volume & Issue: Volume 3, Issue 5

Page(s): 49 - 55
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Last Date 25 July 2018


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