IGBT单管并联研究与仿真

Multiple Single-Tube IGBT Parallel Research and Simulation

摘要: 本文介绍了影响IGBT并联均流的因素，研究IGBT在并联使用中的静态均流和动态均流。通过并联使用电流的不均流度计算出IGBT并联使用时降额的数据并给出建议。利用PSPICE软件建立系统模型，针对杂散电感和驱动电路对IGBT均流特性的影响进行仿真。最后通过工程样机实测多个IGBT并联的均流值与PSPICE仿真的数据对比，仿真波形和实测数据吻合，验证仿真的真实性，通过试验结果验证了文中所述方法对指导多个IGBT并联应用的有效性。

Abstract: This article introduces the factors that affect the parallel current sharing of IGBT and studies the static and dynamic current sharing of IGBT in parallel used. Based on the uneven current flow of parallel connection, the derating data of IGBT in parallel used are calculated and suggestions are given. Based on PSPICE software, the system model is established to simulate the influence of stray inductance and driving circuit on the current sharing characteristics of IGBT. Finally, the actual current value of multiple IGBT connected in parallel with the engineering prototype is compared with the data from the PSPICE simulation. The simulation waveforms are consistent with the measured data to verify the authenticity of the simulation. The experimental results verify the method described in the article for the guidance of multiple IGBTs in parallel Effectiveness.