中圖分類號： TM464
文獻(xiàn)標(biāo)識碼： A
文章編號： 0258-7998(2013)03-0070-04

Three-phase dual buck grid-connected inverter based on sliding mode control

Abstract： To obtain the good robustness， sliding mode control of the three-phase dual buck grid-connected inverter is studied. Firstly, the control system can be designed based on the equivalent analysis circuit. Then, its sliding mode control is designed based on the equivalent analysis circuit. And the sign function of control rate is replaced by the smooth function to weaken the chattering. Simulation results show that the inverter used sliding mode control show good dynamic and static performance. And the output current of the inverter is high quality and the harmonic content is low.

Key words : three-phase dual buck grid-connected inverter；bridge arm through；sliding mode control；equivalent control；robustness