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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >An Improved Fault-Tolerant Five-Phase Induction Machine Using a Combined Star/Pentagon Single Layer Stator Winding Connection
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An Improved Fault-Tolerant Five-Phase Induction Machine Using a Combined Star/Pentagon Single Layer Stator Winding Connection

机译：一种改进的容错五相感应电机，采用星形/五角形单层定子绕组连接

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摘要

One of the main merits offered by multiphase machines is their high fault-tolerant capability. Literature has demonstrated that the performance of multiphase induction machines under fault conditions is affected by the employed stator winding connection. In open-loop controlled five-phase machines, the star connection is favorable under healthy conditions while the pentagon connection is favorable and yields a lower derating factor under the open phase condition. In this paper, a new combined star/pentagon single layer winding layout that combines the advantages of both star and pentagon connections is proposed for a five-phase induction machine. Although the proposed winding is intrinsically an asymmetrical ten-phase machine, the proposed connection allows for only five-phase terminals. Moreover, the proposed winding not only yields better flux distribution compared to a conventional single layer winding, but also provides a complete cancellation of the third-order harmonic flux component caused by the induced third sequence currents due to the saturation effect and/or under unbalanced operation. Hence, the machine losses are decreased, which improves the overall machine efficiency. For the healthy case, the machine is similar to a conventional star connected five-phase machine. However, with one phase open, the proposed connection results in a lower derating factor compared to conventional connections for both open-loop and optimal current control techniques. A 1-kW prototype machine is used for experimental verification.
机译：多相电机提供的主要优点之一是其高容错能力。文献已经证明，在故障条件下多相感应电机的性能会受到所采用的定子绕组连接的影响。在开环控制的五相电机中，在健康条件下星型连接是有利的，而在对开相状态下，五边形连接是有利的，并且降额系数较低。在本文中，针对五相感应电机，提出了一种新的星形/五边形单层组合绕组布局，该布局结合了星形和五边形连接的优点。尽管建议的绕组本质上是不对称的十相电机，但建议的连接方式仅允许使用五相端子。此外，与常规的单层绕组相比，提出的绕组不仅产生更好的磁通量分布，而且由于饱和效应和/或在不平衡状态下，还可以完全抵消由感应的第三序电流引起的三阶谐波磁通分量。操作。因此，减少了机器损失，从而提高了整体机器效率。对于健康情况，该电机类似于常规的星形连接五相电机。但是，与传统的开环和最佳电流控制技术连接相比，在单相断开的情况下，建议的连接方式导致降低的降额系数。 1千瓦原型机用于实验验证。

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