Permanent magnet motors capable of pole-changing without changing the connection of the windings for high efficiency
Permanent magnet motors capable of pole-changing without changing the connection of the windings for high efficiency
复制标题
永磁电机能够在不改变绕组连接的情况下进行变极，以实现高效率
DOI：
10.1109/iemdc.2015.7409100
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
N. Yuzawa
中科院分区：
文献类型：
--
作者：
K. Sakai;K. Matsuda;N. Yuzawa
为了实现电器和电动汽车的节能，需要降低变速运行的电机的功耗。我们开发了一种根据速度改变永磁 (PM) 电机磁极的技术。在这里，我们提出了一种新型永磁电机，可以在不改变绕组连接的情况下改变极数，并讨论其基本配置和原理。变极是使用所提出的电机的 d 轴电流进行磁化来完成的。我们的分析结果证实，与传统永磁电机相比，变极永磁电机的铁损降低了 36%，并在较宽的速度范围内提高了效率。因此，所提出的电机适用于变速驱动系统，以实现高性能和高效率。
To realize energy saving in electrical appliances and electric vehicles, it is necessary to reduce the power consumption of motors operating at variable speeds. We developed a technique that changes the poles of a permanent magnet (PM) motor depending on the speed. Here, we propose a novel PM motor that changes the number of poles without changing the winding connections and discuss its basic configurations and principles. Pole-changing is accomplished using the d-axis current of the proposed motor for magnetization. Our analysis results confirm that the pole-changing PM motor reduces iron loss by 36% over a conventional PM motor and increases efficiency over a wide range of speeds. Hence, the proposed motor is suitable for use in variable-speed drive systems to achieve high performance and efficiency.