非理想三相三重变换电路效率分析

Efficiency analysis of non ideal three-phase triple circuit

针对传统三相三重电路不便分析系统实际效率的问题,结合非理想状态三相三重电路的运行状态,推导非理想状态下元件的等效模型,建立非理想系统等效电路。并根据其等效电路推导出效率的计算公式,分析在非理想状态下占空比以及各元件参数对效率的最终影响,对系统分析以及电路设计时器件的选取和参数计算提供理论依据。进行了SEMISEL损耗仿真与Matlab电路仿真,并搭建了实验平台。最终仿真与实验结果及推导模型相吻合,验证了该模型能够很好地描述非理想状态下不同因素对效率的影响。

It is inconvenient to analyze the actual efficiency of the traditional three-phase triple circuit.Based on the operation state of three-phase triple circuit in non-ideal state,the equivalent model of components in non-ideal state is deduced,and the equivalent circuit of non-ideal system is established.According to the equivalent circuit,the calculation formula of efficiency is deduced and the duty cycle and the ultimate influence of component parameters on efficiency are analyzed in the non-ideal state.It provides theoretical basis for system analysis and device selection and parameter calculation in circuit design.The SEMISEL loss simulation and Matlab circuit simulation are carried out,and the experimental prototype is built.The simulation and experimental results coincide with the derived models,which verifies that the derived model can well describe the influence of different factors on efficiency under non-ideal conditions.