Single-phase power electronic transformer topological structure and transformer

The invention relates to the technical field of single-phase power electronic transformers, in particular to a single-phase power electronic transformer topological structure and a transformer, the single-phase power electronic transformer topological structure does not have an intermediate energy storage link, a direct current bus capacitor adopts a small-capacitance thin film capacitor, the size of a whole system can be reduced, and the reliability of the system can be improved; a power frequency commutation rectification circuit switch and a power frequency commutation inversion circuit switch both work in a power frequency switching state, switching loss is reduced, and output voltage amplitude adjustment and power bidirectional flow can be realized. 本发明涉及单相电力电子变压器的技术领域，尤其涉及一种单相电力电子变压器拓扑结构及变压器，该单相电力电子变压器拓扑结构无中间储能环节，直流母线电容采用小容值薄膜电容，可以减小整个系统的体积并提高系统的可靠性，工频换相整流电路和工频换相逆变电路开关都工作在工频切换状态，减小了开关损耗，并且可以实现输出电压幅值调整和功率双向流动。