COMPARATIVE STUDY OF SOFT SWITCHING METHODS USED IN DC-DC CONVERTERS

Authors : Ali SAYGUN, Ersoy BEŞER, Murat ÜNLÜ

Pages : 1-22

View : 19 | Download : 17

Publication Date : 2017-04-28

Article Type : Research Paper

Abstract :High frequency switched-mode DC-DC converters are widely used in industry such as battery charging, renewable energy, fuel-cell, power factor correction, LED lighting applications,  due to their low response time, easy controlling and high power density. However, at high switching frequency, switching losses, electromagnetic interference insert ignore into journalissuearticles values(EMI); and lower efficiency become substantial problem. These problems must be eliminated or reduced by using additional passive and active snubber cells in order to operate the converter with soft switching insert ignore into journalissuearticles values(SS); instead of hard switching insert ignore into journalissuearticles values(HS);. In this paper, properties of soft switching methods named as zero voltage transition insert ignore into journalissuearticles values(ZVT);, zero current transition insert ignore into journalissuearticles values(ZCT);, and zero voltage zero current transition insert ignore into journalissuearticles values(ZVZCT); developed by combining the ZVT and ZCT, zero voltage switching insert ignore into journalissuearticles values(ZVS); and zero current switching insert ignore into journalissuearticles values(ZCS); are studied and discussed, simulations of soft switching DC to DC boost converters including these methods are accomplished for 500W and 1kW power at switching frequency of 100 kHz.
Keywords : Switched mode DC DC Converters, Hard Switching HS, Soft Switching SS, Zero Current Switching ZCS, Zero Voltage S