Gyu-Hyeong Cho

A new ZVS DC/DC converter with fully regulated dual outputs

A new type of dual output zero voltage switched (ZVS) DC/DC power converter is proposed. One output is dependent on the effective duty ratio and the other is largely dependent on the switching frequency. Two completely regulated outputs are obtained with only one bridge circuit by combining the different configurations of secondary output. Using ZVS technique, switching loss can be reduced to quite low at several hundred kHz.<<ETX>>

ZCS-ZVS mixed mode PWM resonant converter for snubber energy recovery of 3-level GTO inverter

In this paper, a new type of PWM series resonant converter is proposed. One pole of the proposed converter is switching at zero-current and the other is switching at zero-voltage. By introducing an auxiliary inductor, zero-voltage switching is possible even at no load. The proposed converter is suitable for a high-voltage DC/DC converter because the voltage stresses of switching devices are minimized.<<ETX>>