Title :
Soft-switched three-level capacitor clamping inverter with clamping voltage stabilization
Author :
Yuan, Xiaoming ; Barbi, Ivo
Author_Institution :
Lab. of Power Electron. & Electrometrology, Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
This paper proposes a zero-voltage-switching scheme for the three-level capacitor clamping inverter. The proposed small-rating auxiliary circuit ensures not only zero-voltage switching of the main switches and zero-current switching of the auxiliary switches, but the clamping capacitor voltage of the inverter is also stabilized. The scheme prevents any voltage or current spikes from happening over the main or auxiliary switches and no modulation constraints are incurred. Operation, analysis, designing, and testing aspects of the scheme are detailed
Keywords :
DC-AC power convertors; PWM invertors; circuit stability; power capacitors; switching circuits; ZVS; auxiliary switches; clamping capacitor voltage stabilisation; clamping voltage stabilization; main switches; modulation constraints; small-rating auxiliary circuit; soft-switched three-level capacitor clamping inverter; zero-voltage switching; Capacitors; Clamps; Leg; Power electronics; Pulse width modulation inverters; Resonance; Switches; Switching circuits; Testing; Zero voltage switching;
Journal_Title :
Industry Applications, IEEE Transactions on
