一种具有安全换流和连续电流特性的新型高效率变频Buck-Boost AC-AC变换器

In this article, a novel high-efficiency single-phase frequency-variable buck–boost ac–ac converter is proposed. AC input voltage can be bucked and boosted with step-changed frequency operation. In the topology, only six switches and total ten semiconductors are utilized, which is at the lowest level among existing works. Only two of the switches are operating at high frequency and only one switch...