A study of transient state on triac off-state voltage and optimization of parameters of snubber circuit for 3-phase induction motors switching application;

Dual switch forward converter with zero voltage switch active clamp;

Decreasing the circumfluence wastage and harmonizing the contradiction between duty circle loss and realizing zero voltage switch (ZVS) of the lagging switches in large scope of the load as well as the input voltage are two problems which need to research for phase-shift full bridge (PS-FB) DC/DC converter.

The paper describes the working process of halfbridge zero voltage switch multiresonant power supply,its design method,and the working principle of 48 V resonant power supply.

The new theoretical analysis method for the phase-shifted zero-voltage-switching DC/DC PWM full-bridge converter;

Zero-Voltage-Switching Multi-Resonant Three Level Converters;

Research of active clamp Zero-Voltage-Switching forward converter on circuit characteristics and parameter design are done in this paper.

The performance of power supply is improved by adopting high frequency and zero-voltage switching more-resonant converter(ZVS-MRC) mode,and achieved high power density,high conversion efficiency and high reliability.

A novel aeronauitc single-stage single-switch active power factor correction converter is proposed,which is an improved SEPIC topology operating in zero-voltage switching with the active clamp cell.