摘要
功率二极管非理想特性表现为较高的正向恢复电压与反向恢复电流。本文在分析二极管非理想特性产生机理的基础上,研究了功率二极管在中点钳位(NPC)三电平电路中不同工作状态下的瞬态行为及其对三电平电路主开关管工作性能的影响。通过Saber仿真软件建立了具有正向与反向恢复特性的二极管功能模型,并通过NPC三电平电路的仿真,验证了该模型对于定量分析三电平电路是可行的。实验结果进一步证明了理论分析与仿真分析的正确性。
The nonideal characteristic of high power diode is mainly the higher forward recovery voltage and reverse recovery current. Based on the generant mechanism of the nonideal characteristic, the transient behavior of diode is investigated in the various circuit state of the three-level neutral point clamping （NPC）, and the effect on the main switch is also studied. The diode functional model with forward and reverse recovery is built by Saber. The feasibility of the diode model in quantitative analyzing the three-level NPC is proved by the simulation. The experiment result further shows that the theoretical analysis and the simulation is correct.
出处
《电工技术学报》
EI
CSCD
北大核心
2010年第6期40-46,54,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金委员会创新研究群体科学基金(50721063)
国家自然科学基金(50607020
50737004ZD)资助项目
