Permanent Magnet (PM) motors have been attracting great attention in recent technology because of providing higher efficiency as well as power/volume as compared to conventional wound‐rotor type machines. Recently, it has been demonstrated that NdFeB magnets, which are one of the expensive magnets, can be replaced by Alnico magnets in the case of Switched Reluctance Motor (SRM) without any performance degradation. However, the performance of this machine has not been analyzed so far under a proper torque control strategy. The main objective of this work is to investigate the performance of DITC‐controlled PM‐SRM under various conditions. The possible demagnetization effect of the Alnico magnets on motor performance has also been considered. Compared to same size SRM, 3% efficiency increase has been obtained at rated operation. Overall results demonstrate that PM‐SRM drive shows valuable performance and may have potential to be used in near future motor drive technology. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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用于可调速驱动应用的低成本永磁辅助开​​关磁阻电机

永磁（PM）电动机由于与传统的绕线转子式电机相比具有更高的效率以及功率/体积，因此在最近的技术中引起了极大的关注。最近，已经证明，在开关磁阻电动机（SRM）的情况下，作为昂贵磁体之一的NdFeB磁体可以由Alnico磁体代替，而不会降低性能。但是，到目前为止，尚未在适当的转矩控制策略下分析该机器的性能。这项工作的主要目的是研究DITC控制的PM-SRM在各种条件下的性能。还考虑了Alnico磁体可能对电动机性能产生的消磁作用。与相同尺寸的SRM相比，额定运行时效率提高了3％。总体结果表明，PM‐SRM驱动器显示出宝贵的性能，并可能在不久的将来用于电动机驱动技术中。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。