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控制与算法 故障诊断 可靠性分析 多电平 ★ 2.0

针对两电平不对称六相感应电机驱动在开关故障下的平滑过渡、转矩-速度区域提升及定子铜耗优化策略

Strategy With Smooth Transitions and Improved Torque–Speed Region and Stator Copper Loss for Two-Level Asymmetrical Six-Phase Induction Motor Drives Under Switch Faults

语言:

中文摘要

本文针对两电平不对称六相电机驱动系统,提出了一种在功率器件发生开关或二极管故障时的容错控制策略。该方法通过优化控制算法,实现了故障发生时的平滑过渡,并有效提升了电机的转矩-速度运行范围,同时降低了定子铜耗,增强了系统的可靠性与运行效率。

English Abstract

Asymmetrical six-phase drives are very attractive to obtain fault tolerance. Most faults arise in the power electronics. Two conventional methods to handle switch/diode faults in two-level converters are keeping the corresponding phases open (in two-level multiphase drives) or connecting them to the dc-link midpoint (in two-level three-phase drives) through a bidirectional switch (e.g., triac/rela...
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SunView 深度解读

该研究聚焦于多相电机驱动系统的容错控制,虽然阳光电源目前的核心业务集中在光伏逆变器、储能PCS及风电变流器,而非六相感应电机驱动,但其提出的“故障平滑过渡”与“容错控制”思想对阳光电源的功率变换器设计具有参考价值。在风电变流器或大功率储能PCS中,通过先进的故障诊断与容错控制算法,可以在单个功率模块失效时维持系统降额运行,提升PowerTitan等大型储能系统的可用性与可靠性。建议研发团队关注该类容错算法在多模块并联系统中的应用潜力。