双逆变器开式绕组驱动的总体评估

Bo Wang, G. Localzo, G. el Murr, J. Wang, A. Griffo, C. Gerada, T. Cox
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引用次数: 16

摘要

双逆变器开绕组驱动(DIOWD)与标准三相驱动相比,具有多电平电压输出、直流链路电压低、效率高、容错能力强等优点。本文对三种针对高速和/或安全关键应用的DIOWD拓扑进行了评估。用分析方法对它们的运行特性、伏安额定值、效率、谐波失真系数(HDF)进行了定量比较。双逆变器的使用为驱动器提供了容错能力。然而,加倍的设备数量增加了单点故障的风险。最后,利用马尔可夫链技术对传动的可靠性进行了评估。结果表明,双电源DIOWD具有低HDF和高效率的特点;它还提供了更好的容错能力和增强的可靠性,因此对高速和高可靠性应用程序更有吸引力。而单电源DIOWD和带电源和浮动电容的DIOWD可用于直流链路电压降低的高速驱动器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Overall assessments of dual inverter open winding drives
Dual inverter open winding drive (DIOWD) has several advantages over standard 3 phase drive such as multilevel voltage output, lower dc link voltage, high efficiency and better fault tolerant capability. In this paper three DIOWD topologies aiming for high speed and/or safety critical applications are evaluated. Their operation characteristics, VA ratings, efficiencies, harmonic distortion factors (HDF) are quantitatively compared using analytical methods. The utilization of dual inverters provides fault tolerant capabilities for the drive. However, the doubled number of devices increases the risk of single-point failure. Finally, the reliability of the drives is assessed by Markov chain technique. The results show that the DIOWD with two power supplies exhibits low HDF and high efficiency; it also offers better fault tolerant capability and enhanced reliability, thereby being more attractive for both high speed and high reliability applications. While the DIOWD with single power supply and the DIOWD with a power supply and a floating capacitor can be utilized for high speed drives with reduced dc link voltage.
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