Performance and enhancement of open and closed loop bidirectional dc dc converters fed permanent magnet dc motor

Abstract

The objective of the work is to focus on analyzing the model newlineisolated and non-isolated DC-DC boost converter in which the closed loop newlinecontroller to improve their efficiency. Many number of Bidirectional DC-DC newlineconverter enhance the efficiency of the operation of the power flow in boost newlinemode and buck mode. Isolated DC-DC converter is required for low voltage newlineDC supply and high voltage DC supply which can perform many industrial newlineapplications to adopt the following DC-DC converter.The SEPIC (Single Ended Primary Inductor Converter) high step up conversion technique finds increasing necessities in the applications, such as newlineelectric vehicles, uninterrupted power supplies, high-intensity discharge lamp, newlinefuel cell and photovoltaic systems. It is operated in the open loop circuit newlinewhich is to be analyzed with passive filters in the load side. The closed loop newlinecontrol of isolated boost SEPIC with PI (Proportional Integral) controller and newlinefuzzy controller are used to reduce the error and to increase the gain. This newlinework focuses on analyzing the performance of non-isolated converter and its newlinecomparison with the isolated converter.Flyback DC-DC converter is operated in the open loop circuit which is to be analyzed with passive filters in the load side. This work compares the newlineperformances of non-isolated and Flyback DC-DC converters. and#1049094; filter is newlineproposed at the output of the converter to reduce the ripple. In the closed loop newlinesystem any disturbance is applied at the input voltage to produce constant newlineoutput voltage using PI controller and Fuzzy logic cont newline newline