This paper introduces a family of single-stage buck-boost DC/AC inverters for photovoltaic (PV) applications. The high-gain feature was attained by applying a multi-winding tapped inductor, and thus, the proposed topologies can generate a grid-level AC output voltage without using additional high step-up stages. The proposed topologies had a low component count and consisted of a single magnetic device and three or four power switches. Moreover, the switches were assembled in a push-pull or half/full-bridge arrangement, which allowed using commercial low-cost driver-integrated circuits. In this paper, the operation principle and comparison of the proposed topologies are presented. The feasibility of the proposed topologies was verified by simulations and experimental tests.
Zhao, B., Abramovitz, A., Liu, C., Yang, Y., & Huangfu, Y. (2020). A Family of Single-Stage, Buck-Boost Inverters for Photovoltaic Applications. Energies, 13(7), 1-21. [en13071675]. https://doi.org/10.3390/en13071675