Title :
A Zero-Voltage Switching Three-Phase Inverter
Author :
Rui Li ; Dehong Xu
Author_Institution :
Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A new modulation scheme for the active clamping zero-voltage switching (ZVS) inverter is proposed. With the proposed modulation scheme, the inverter can realize ZVS operation in all switching devices and can remarkably suppress the reverse recovery current in insulated-gate bipolar transistor´s antiparallel diodes as well. All the switches can operate at a fixed frequency in the new modulation scheme. Also, with the new modulation scheme, the ZVS inverter has some voltage boost capability, which is suitable for renewable energy generation. The inverter can achieve ZVS in all the switches under the grid current power factor angle from zero to ±π/6. The soft-switching condition of this inverter is analyzed. The operation principal and design guideline are described in detail. The previous theory is verified in a 30-kW inverter prototype.
Keywords :
clamps; insulated gate bipolar transistors; modulation; power factor; power grids; semiconductor diodes; switchgear; switching convertors; zero current switching; zero voltage switching; ZVS; active clamping zero-voltage switching three-phase inverter; antiparallel diode; grid current power factor angle; insulated-gate bipolar transistor; modulation scheme; power 30 kW; renewable energy generation; reverse recovery current suppression; soft-switching condition; voltage boost capability; Capacitors; Inductors; Inverters; Pulse width modulation; Switches; Zero voltage switching; Grid connected; soft switching; space vector modulation (SVM); three-phase inverter; zero-voltage switching (ZVS);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2013.2260871
