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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Effect of Stator Winding Connection of Five-Phase Induction Machines on Torque Ripples Under Open Line Condition
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Effect of Stator Winding Connection of Five-Phase Induction Machines on Torque Ripples Under Open Line Condition

机译：五相感应电动机定子绕组连接在开路状态下对转矩脉动的影响

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摘要

One of the main challenges in designing high-power drive systems is the quality of the developed torque. High-torque-ripple magnitudes result in serious vibration and acoustic noise problems that affect the lifetime of a drive train. Multiphase machines intrinsically offer the torque with higher quality and are also being promoted for their high fault tolerant capability when compared with their three-phase counterparts. During open-phase conditions, the induced nonfundamental sequence current components have a detrimental effect on the machine performance especially under open-loop control. Although optimal current control is usually employed to ensure certain optimization criterion, such as minimizing torque ripples, optimizing flux distribution, or minimizing copper loss, are met, it usually entails a sophisticated current controller. This paper studies the effect of a stator winding connection of a five-phase induction machine on the induced torque ripples. Two possible connections, namely, star and pentagon connections are compared under healthy as well as fault conditions with one-line open. The comparison is conducted using both finite-element simulation and experimental results using a 1.5-Hp five-phase prototype induction machine. The comparison shows that the pentagon connection reduces the machine-induced torque ripples and improves the overall machine performance under fault conditions.
机译：设计大功率驱动系统的主要挑战之一是所产生扭矩的质量。高转矩波纹会导致严重的振动和噪音问题，从而影响传动系统的使用寿命。多相电机本质上可以提供更高质量的扭矩，并且与三相电机相比，它们还具有更高的容错能力。在开相条件下，特别是在开环控制下，感应的非基本序列电流分量会对电机性能产生不利影响。尽管通常采用最佳电流控制来确保某些优化标准，例如最小化转矩脉动，优化磁通分布或最小化铜损，但通常需要复杂的电流控制器。本文研究了五相感应电机的定子绕组连接对感应转矩脉动的影响。在单线断开的情况下，在正常状态和故障状态下，比较两个可能的连接，即星形和五边形连接。使用有限元模拟和使用1.5 Hp的五相原型感应电机的实验结果进行了比较。比较表明，五边形连接减少了机器引起的转矩波动，并改善了故障条件下的整体机器性能。

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