Digital Simulation of SISO-ZVS-Push pull Quasi Resonant Converter for Different Loads

摘要

Resonant switching DC -DC converters are currently replacing hard switched converters for power supply in many applications due to their divergent advantages such as high efficiency, high frequency opera tion, co mpact structure, low EMI, etc. The paper deals w ith the design and simulation of SISO ZVS Pushpull converter for R, RL, RLE and DC servo drive using MATLAB/ Simulink in half w ave mode. The salient feature of ZVS is that the switching devices is switched on at zero voltage , so that switching losses are zero, switching stresses and volumes are reduced and power density is increased. These features increases the efficiency of the converter applied for robotic applications. The centre tapped transformer of the pushpull converter also functions as an isolation device between the source and the load