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首页> 外文期刊>Power Engineering Review, IEEE >Synchronization of Line-Start Permanent-Magnet AC Motors
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Synchronization of Line-Start Permanent-Magnet AC Motors

机译：线路启动永磁交流电动机的同步

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The line-start PM (permanent magnet) motor is a very high efficiency synchronous motor designed to operate at fixed voltage and frequency from the same power supplies as induction motors. The excitation is provided partly by the magnets, which are mounted in the rotor, and partly by the line current. A squirrel cage is provided to accelerate the motor from standstill when started ``across the line.'' This paper describes the synchronizing process and the characteristics of PM motors that lead to an inherently higher starting capability than that of comparable reluctance motors. The starting performance is described with the aid of computed transient torque/speed and related trajectories. The results have been verified with reference to detailed tests on a 25-hp motor that has been described in earlier papers. Two basic configurations of PM motor are shown in Fig. 1. On the left is a four-pole arrangement with radially magnetized magnets, and on the right a six-pole arrangement with circumferentially magnetized magnets.
机译：线性启动PM（永磁）电动机是一种非常高效的同步电动机，设计为使用与感应电动机相同的电源以固定的电压和频率运行。励磁部分由安装在转子中的磁体提供，部分由线电流提供。提供了一个鼠笼式电动机，以便在“跨线启动”时使电动机从静止状态加速。本文介绍了同步电动机的特性以及与固有的磁阻电动机相比具有更高起动能力的永磁电动机的特性。借助于计算出的瞬态转矩/速度和相关轨迹来描述启动性能。参考先前论文中描述的25马力电机的详细测试，验证了结果。永磁电动机的两种基本配置如图1所示。左侧是带有径向磁化磁体的四极配置，右侧是带有圆周磁化磁体的六极配置。

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