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首页> 外文期刊>IEEE Transactions on Magnetics >Analytical Modeling of a Permanent-Magnet Synchronous Machine in a Flywheel
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Analytical Modeling of a Permanent-Magnet Synchronous Machine in a Flywheel

机译：飞轮中永磁同步电机的解析模型

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摘要

We develop an analytical model for a radial-flux external-rotor permanent-magnet synchronous machine (PMSM) without slots in the stator iron and with a shielding cylinder. The machine is part of an energy storage flywheel, to be used as the peak-power unit in a hybrid electric passenger bus. To reduce the induced no-load losses due to the high rotational speed of the flywheel, the slots in the stator are made not of iron but of a nonmagnetic plastic material. This results in an air gap winding with a stator yoke consisting of stacked circular laminations. The analytical model includes the effect of the winding distribution on the field, the fact that it is in the air gap, and the effect of the eddy-current reaction field of the shielding cylinder. The two-dimensional magnetic field is solved in six defined machine layers and useful machine quantities are derived directly from it, leading to the machine voltage equation. We built a prototype flywheel machine. The locked-rotor machine resistance and inductance predicted by the analytical model was compared with the experimentally determined values. The values showed good agreement, thereby validating the analytical model of the machine.
机译：我们开发了一种径向磁通外转子永磁同步电机（PMSM）的分析模型，该电机在定子铁芯中没有缝隙，并且带有屏蔽圆柱体。该机器是储能飞轮的一部分，将用作混合动力电动客车的峰值功率单元。为了减少由于飞轮的高转速而引起的空载损失，定子中的槽不是由铁制成，而是由非磁性塑料制成。这导致了带有定子磁轭的气隙绕组，该定子磁轭由堆叠的圆形叠片组成。分析模型包括绕组分布对磁场的影响，绕组分布在气隙中的事实以及屏蔽圆柱体的涡流反应场的影响。在六个已定义的机器层中求解二维磁场，并直接从中得出有用的机器量，从而得出机器电压方程。我们制造了原型飞轮机。将解析模型预测的转子转子电机的电阻和电感与实验确定的值进行比较。这些值显示出良好的一致性，从而验证了机器的分析模型。

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