← 返回
功率器件技术 SiC器件 功率模块 可靠性分析 热仿真 ★ 5.0

非均匀电热特性对并联SiC功率器件在无钳位和钳位电感开关下的影响

The Effect of Electrothermal Nonuniformities on Parallel Connected SiC Power Devices Under Unclamped and Clamped Inductive Switching

语言:

中文摘要

并联功率器件间的电热特性不均匀会导致功率损耗分配不均,降低系统整体可靠性。此外,不均匀的退化速率会加剧电热差异,从而加速失效过程。本文通过仿真与实验,定量及定性地研究了这一现象,为提升功率模块的长期运行稳定性提供了理论依据。

English Abstract

Nonuniformities in the electrothermal characteristics of parallel connected devices reduce overall reliability since power is not equally dissipated between the devices. Furthermore, a nonuniform rate of operational degradation induces electrothermal variations thereby accelerating the development of failure. This paper uses simulations and experiments to quantitatively and qualitatively investiga...
S

SunView 深度解读

随着阳光电源PowerTitan液冷储能系统及组串式逆变器向高功率密度、高效率方向发展,SiC器件的并联应用已成为提升系统效率的关键。本文研究的电热非均匀性问题直接影响大功率模块的均流特性与寿命。建议研发团队在设计高压大电流PCS模块时,重点关注并联SiC器件的动态热分布,利用多物理场仿真优化驱动电路布局与热管理设计,以降低器件退化风险,提升产品在严苛工况下的长期可靠性。