混合开关是一种将不同材料、不同结构、不同特性的功率半导体并联应用的新型模组，其在第三代半导体器件来临的清洁能源新时期具有颠覆性的功耗、成本优势。为了将现有研究中的中低频高压大功率混合开关推向高频电力电子应用，本文结合电路行为分析与半导体器件特性，提出了计及内环电感的高频混合开关高速关断暂态过程等效模型，从多角度对其影响机理进行深入探究；利用LTspice仿真演示内环电感对高频混合开关关断特性的直观影响。设计搭建高精度双脉冲测试平台，分析内环电感主要引入项，对不同内环电感条件、不同高频混合开关组合的关断过程进行测试分析，结果充分验证了机理分析及所提模型的准确性与有效性，并为后续高频混合开关设计提供理论依据与实践参考。

Hybrid switch (HyS) is a new type of module with parallel applications of power semiconductor devices of different materials, structures and characteristics, which owns disruptive advantages at power loss and economy with coming of the third semiconductor devices in the new era of clean energy. For higher frequency applications of hybrid switch, based on circuit behavior analysis and semiconductor devices characteristics, this paper proposed the equivalent models of the fast turn-off process of high frequency hybrid switch with inner loop inductance considered, where relevant influence mechanisms were deeply explored. LTspice simulations were applied to demonstrate the intuitive impacts on the turn-off characteristics of hybrid switch by inner loop inductance. And the according high-precision double-pulse test (DPT) platform was designed and built to test the turn-off process of different combinations of hybrid switch with a range of inner loop inductance level, where the experiment results sufficiently verify the validity of mechanism analysis and the proposed models. This work also provides theoretical basis and practical reference for future designs of high frequency hybrid switch.

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国家自然科学基金项目(62071073)；中央高校基本科研业务费专项资金项目(2023CDJXY-041)；