New Zero-Current-Transition(ZCT)Circuit Cell Without Additional Current Stress

Abstract

In this paper, a new zero-current-transition (ZCT) circuit cell is proposed The main switch is turned-off under the zero current and zero voltage condition, and there is no additional current stress and voltage stress in the main switch and the main diode, respectively The auxiliary switch is turned-off under the zero voltage condition, and the main diode is turned-on under the zero voltage condition The resonant current required to obtain the ZCT condition is relatively small and regenerated to the input voltage source The operational principles of a boost converter integrated with the proposed ZCT circuit cell are analyzed and verified by the simulation and experimental results.