Details

Autor(en) / Beteiligte

• Liu, Chang-Liang
• Zhang, Hui-Chao

Titel

Analysis and Design of a Soft-switching Flyback Grid-connected Photovoltaic Inverter

Ist Teil von

• Dian li dian zi ji shu, 2015-06, Vol.49 (6), p.83-86

Erscheinungsjahr

2015

Beschreibungen/Notizen

• A soft-switching topology for flyback grid-connected photovoltaic inverter and its working process are analyzed. With the help of the leak inductor of flyback transformer and the snubber capacitor, the leak inductor energy is recovered during the process of the resonant. An adjusting inductor is applied into soft-switching circuit to adjust the period of the resonant and the leak energy. The drain-source voltage of the main switch can be clamped to improve the conversion efficiency and eliminate the switch-off voltage spike of the main switch. A resonant soft-switching control is proposed to achieve zero voltage switching turning-on of the main switch and improve electromagnetic interference (EMI) performance of the inverter. Finally, the net current is effectively improved through the soft-switching circuit.