对偶原理是分析电力电子电路拓扑结构的有力工具。
Duality principle is a powerful tool for the analysis of topological structure of power electronic circuits.
提出了一种基于双PWM变换的电力电子变压器拓扑结构，对各级电路提出了相应的控制策略。
The topology of PET based on dual PWM converters is proposed. The control strategies of each sub-circuit of PET are pointed out.
提出了一种基于双PWM变换的电力电子变压器拓扑结构，对各级电路提出了相应的控制策略。
The topology of PET based on dual PWM converters is proposed. The control strategies of each sub-circuit of PET are pointed out.
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