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逆导型IGBT (RC-IGBT)是将IGBT功能与续流二极管功能集成在一个芯片上,实现了在相同封装体积下,可获得更大的功率密度,由于IGBT与二极管紧密的移相热耦合,在相同散热条件下,RC-IGBT允许的工作结温更高.同时,RC-IGBT的本征二极管还受到栅极电压控制,通过栅极电压控制策略,可以降低器件损耗,优化系统特性.介绍了RC-IGBT的基本工作原理和二极管退饱和控制特性,研究了RC-IGBT应用于变流器系统的损耗优化控制策略,分析了应用RC-IGBT的单相脉宽调制(PWM)整流器的工作特性与损耗特性.通过一个具体的应用工况运行仿真,分析对比了RC-IGBT和普通IGBT在PWM整流器应用中的损耗特性.结果显示,应用RC-IGBT后总体损耗有所降低,验证了RC-IGBT退饱和脉冲控制的有效性. 相似文献
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The RC-IGBT(reverse conducting insulated gate bipolar transistor) is a new kind of power semiconductor device which has many advantages such as smaller chip size,higher power density,lower manufacturing cost,softer turn off behavior,and better reliability.However,its performance has a number of drawbacks,such as the snap-back effect.In this paper,an introduction about the snap-back effect of the RC-IGBT is given firstly. Then the physical explanations are presented with two simplified models.After that,some numerical simulations are carried out to verify the correctness of the models. 相似文献
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首次对半超结RC-TIGBT与传统RC-TIGBT的正向导通机理进行了比较研究。通过Silvaco TCAD软件仿真,模拟研究了Ydrift值、P-集电区宽度与N+短路区宽度等关键参数对Snapback效应的影响。结果表明,回退电压点随着Ydrift的减小而减小,且与Ydrift呈线性关系。对于底部集电极尺寸而言,回退电压点与P-集电区宽度有关,与N+短路区宽度基本无关。基于仿真结果,给出半超结RC-TIGBT的等效电路,并详细分析了半超结技术能抑制Snapback效应的原因。最后,对半超结RC-TIGBT的结构参数进行设计,提出一种能减小Snapback效应的有效方法。 相似文献
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A simple equivalent circuit model is proposed according to the device structure of reverse conducting insulated gate bipolar transistors (RC-IGBT). Mathematical derivation and circuit simulations indicate that this model can explain the snap-back effect (including primary snap-back effect, secondary snap-back effect, and reverse snap-back effect) and hysteresis effect perfectly. 相似文献
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