Research on a novel ZVT buck inverter based on sliding mode control

This paper presents a novel ZVT-buck inverter. The buck-inverter topology using dc-to-dc converter is easy to realize soft switching technique, so inverter efficiency increases and there are not too voltage and current stress for the power switch. Due to the inherent nonlinearity of the inverter systems, the discrete sliding mode control has been employed to modulate and control the ZVT-buck inverter. Because of using the discrete control it reduces disturb and excursion of the control system. The experimental results show that the proposed inverter has fine output waveforms and fine transient state response and robustness. Moreover It can be kept stability with the load perturbation. So the buck-inverter topology tends to be a good choice to realize soft switch inversion. Operation, analysis, control strategy, and experimental results are included in this paper.