开关损耗的影响因素分析与仿真

Analysis and Simulation on the Influence Factors of Switching Losses

分析了开关损耗和影响开关损耗的因素,确定了4种影响因素为主要对象,对其参数配置进行了实验仿真比较和研究。以IGBT为对象搭建了仿真电路,根据电路先设定4种影响因素参数的基准参考值,后改变其参数值,仿真出IGBT开通与关断过程的电压和电流波形。通过大量仿真数据的测量和比较分析,总结出开关损耗与各因素间的关系和影响。

The factors that affect the switching losses and the losses are analyzed,The experimental simulation is compared and studied base on 4 kinds of influencing factors are determined. The reference value of4 kinds of influencing factors was set up according to the circuit,then the parameters are changed,the voltage and current waveforms of the opening and closing process are simulated by set up the simulation circuit with the IGBT as the object. Through the measurement and comparison of a large number of data,the relationship and influence of the switching loss and the factors are summarized.