Open-circuit fault diagnosis in neutral-point-clamped UPS inverters with no additional sensors

L. Caseiro, A. Mendes
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引用次数: 3

Abstract

The operating conditions of UPS inverters and the fact that the load is unknown lead to great difficulties in fault diagnosis. This paper proposes the use of a fault diagnosis algorithm based on estimated pole voltage error for UPS inverters based on the 3-level Neutral-Point-Clamped topology. This algorithm is independent from the load and is not affected by unbalanced three-phase operation. This algorithm provides very fast and reliable results and requires no additional sensors or hardware. Simulation results are presented to demonstrate the algorithm's speed and robustness.
无附加传感器的中性点箝位UPS逆变器开路故障诊断
UPS逆变器的工作状态和负载未知给故障诊断带来了很大的困难。提出了一种基于3级中性点箝位拓扑的UPS逆变器极点电压误差估计的故障诊断算法。该算法不受负荷的影响,不受三相不平衡运行的影响。该算法提供了非常快速和可靠的结果,不需要额外的传感器或硬件。仿真结果验证了该算法的快速性和鲁棒性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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