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基于区间滑模观测器的三相四桥臂逆变器不平衡负载下多开关开路故障诊断

Multiple Open-Switch Fault Diagnosis for Three-Phase Four-Leg Inverter Under Unbalanced Loads via Interval Sliding Mode Observer

语言:

中文摘要

三相四桥臂逆变器在处理不平衡负载方面具有显著优势。然而,相比传统三相三桥臂逆变器,其额外的桥臂和不平衡电流增加了开路故障模式的复杂性。本文提出了一种基于区间滑模观测器的故障诊断方法,旨在解决复杂工况下的故障检测与定位难题。

English Abstract

The three-phase four-leg inverter has garnered significant attention for its advantages in addressing unbalanced loads and other factors. However, compared to traditional three-phase three-leg inverters, the introduction of additional branches and the occurrence of unbalanced three-phase currents increase the complexity of open-switch (OS) fault modes and types, posing challenges for fault diagnos...
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SunView 深度解读

该技术对阳光电源的组串式逆变器及储能变流器(PCS)具有重要参考价值。随着公司产品在微电网及复杂工业场景的应用增多,三相四桥臂拓扑常用于处理不平衡负载。该研究提出的区间滑模观测器方法,无需额外传感器即可实现高精度故障诊断,有助于提升iSolarCloud智能运维平台在故障预警和远程诊断方面的能力,降低运维成本,提高逆变器在极端工况下的可靠性。建议研发团队关注该算法在PowerStack等储能系统中的应用潜力,以增强系统在不平衡电网环境下的鲁棒性。