Soft-Switching Secondary-Side Modulated Multi-output DC/DC Converter with Extended ZVS Range
Mr.S.Vijayasarathi, Sri Anjana.S, Vaishnavi.S, K.M. Sri Suvetha, L. Nivetha
Multiple output battery charger, Phase shift full bridge, and ZVS-ZCS
The aim of this study is to develop a closed loop single-input multiple-output (SIMO) dc–dc converter. Multiple output converters (MOCs) are widely used for applications which require various levels of the output voltages due to their benefits in cost, volume, and efficiency. However, most of the MOCs developed so far can regulate only one output tightly and require as many secondary windings in the transformer as the number of the outputs. In this paper, Space Vector Pulse Width Modulation method to regulate all the outputs in high precision is proposed and applied for the multiple output battery charger based on the phase shift full bridge topology to charge a multiple number of batteries at one time. The proposed system is characterized by good dynamic properties and high efficiency because the converter transistors are switched in ZVS conditions. A theoretical analysis to provide relations for system design, and the laboratory model investigations to validate the system characteristic are given in the paper.