基于Gamma结构的交流Z源变换器及其安全换流策略

This paper proposes a novel single-phase ac-ac Z-source converter based on the Γ-structure. The proposed converter uses a coupled transformer to produce the required gain. The obtained gain can be tuned by varying the turn ratio γΓ of the transformer within the narrow range of 1 <; γΓ <; 2. Also, the gain factor increases with decrease of the transformer turns ratio, γΓ. Small transformer turn rat...