A Novel of Pv System Based On Semiactive Rectifiers For High-Output Voltage Applications With Isolated Buck-Boost Converters

Kommu Roja, J.Prakash Kumar

Abstract


This paper proposes an isolated buck boost converter with PV system based on semi active rectifiers for high voltage application . In buck boost converter the output voltage either greater than or less than are equal to input  voltage based on requirement This systematic method for developing isolated buckboost (IBB) converters is based high output voltage applications , and single-stage power conversion, soft-switching operation, and high-efficiency performance can be achieved with the  help of proposed family of converters. A photovoltaic system, also PV system or  solar power system, is a power system designed to supply usable solar power by means of photovoltaics An important feature of this stacked structure is the use of low voltage devices while attaining higher number of levels. This will find extensive applications in electric vehicles since direct battery drive is possible. Furthermore,  we have to use a family of semiactive rectifiers (SARs) is proposed to serve as the secondary rectification circuit for the IBB converters,  it will increase the converter voltage gain and reduce the voltage stresses during rectification process. When the voltage stress are reduced the efficiency is improved by providing of   a transformer with a smaller turns ratio and reduced parasitic parameters, by using low-voltage rating MOSFETs and diodes with better switching and conduction performances.


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