Performance characteristics of inset-type permanent magnet bearingless motor drives
Performance characteristics of inset-type permanent magnet bearingless motor drives
复制标题
嵌入式永磁无轴承电机驱动器的性能特点
DOI：
10.1109/pesw.2000.849955
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
T. Fukao
中科院分区：
文献类型：
--
作者：
K. Inagaki;A. Chiba;Mustafizur Rahman;T. Fukao
无轴承交流电机在机床、压缩机、涡轮分子泵和血泵等高速电机中受到特别关注。无轴承电机结合了交流电机和磁力轴承的特点。研究发现，在表面安装永磁体（PM）无轴承电机中，径向力会随着PM厚度的减小而增大，从而增加退磁的可能性。为了增加径向力，本文提出了一种凸极永磁无轴承电机，即插入式永磁无轴承电机。推导了电机扭矩和径向力的解析表达式。电机和径向位置控制电流已确定。理论和实验结果之间存在密切的一致性。实验室插入式永磁无轴承电机原型已经建成并进行了测试。其成功运行于10000转/分，输出功率为1.65千瓦，效率为90.4%。
Bearingless AC motors have attracted special attention in high speed motors for machine tools, compressors, turbomolecular and blood pumps, etc. The bearingless motor has the combined characteristics of an AC motor and magnetic bearings. It has been found that in a surface-mounted permanent magnet (PM) bearingless motor, the radial force can be increased with a decrease in PM thickness, increasing the possibility of demagnetization. In order to increase the radial force, a salient-pole PM bearingless motor, i.e., an inset-type PM bearingless motor has been proposed in this paper. Analytical expressions for the motor torque and radial forces have been derived. The motor and radial position control currents have been determined. There exists close agreement between the theoretical and experimental results. A prototype laboratory inset-type PM bearingless motor has been built and tested. It is successfully run at 10000 r/min with an output of 1.65 kW and an efficiency of 90.4%.