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为开发用于多IGBT并联模块的交直流母排,研究了直流叠层母排和交流汇流母排的杂散参数对多IGBT并联应用时均流特性的影响。首先运用PSPICE软件分析了并联模块中杂散电感对IGBT均流特性的影响,同时利用ANSOFT软件建立了交直流母排各自的有限元模型,并计算了各部分杂散电感值和动态电流偏差率,以评估是否满足应用要求。最后通过对4个IGBT并联模块的工程样机进行双脉冲斩波试验,验证了样机中交直流母排满足使用要求,并通过试验结果与理论计算结果的对比分析验证了文中所述方法对指导多IGBT并联应用中的交直流母排设计的有效性。
In order to develop AC / DC busbars for multi-IGBT parallel modules, the influence of stray parameters of DC laminated busbars and AC busbars on the average current-sharing characteristics of multi-IGBT parallel modules was studied. First of all, using PSPICE software to analyze the parallel module stray inductance of IGBT current characteristics, and the use of ANSOFT software to establish a finite element model of AC-DC busbar, and calculate the part stray inductance and dynamic current deviation rate To assess whether the application requirements are met. Finally, through the double-pulse chopping test on four prototypes of IGBT parallel modules, it is verified that the AC-DC busbar in the prototype meets the requirements of use. The comparison and analysis of the test results and the theoretical calculation results verify that the method described in the article is more effective than the directing Effectiveness of AC-DC busbar design in IGBT parallel applications.