High gain single stage buck-boost inverter

A high gain single stage buck-boost inverter (SSBBI) is proposed in this paper. The proposed topology has low semiconductors count, only four switches. The tapped inductor is applied to attain high gain feature. One-cycle control (OCC) is adopted to control the SSBBI and attain superior source ripple rejection. The paper presents the operation principle of the proposed topology, and the derivation of the OCC control law. The proposed topology and the control scheme are verified by simulation.