Combined Radial-Axial Magnetic Bearing for a 1 kW, 500,000 rpm Permanent Magnet Machine
Combined Radial-Axial Magnetic Bearing for a 1 kW, 500,000 rpm Permanent Magnet Machine
复制标题
DOI：
10.1109/apex.2007.357705
复制
发表时间：
2007-05
期刊：
影响因子：
--
通讯作者：
P. Imoberdorf;C. Zwyssig;S. Round;J. W. Kolar
中科院分区：
文献类型：
--
作者：
P. Imoberdorf;C. Zwyssig;S. Round;J. W. Kolar
超高速和高功率密度驱动器在当今工业中引起了极大的兴趣。例如，有几个研究中尺度气体涡轮机发电机系统和涡轮压缩机的燃料电池。在所有超高速机械中，轴承是一项关键技术。因此，本论文的重点是设计一个500，000 rpm的主动磁轴承，适用于1 kW的永磁电机，以完成一个超高速电驱动系统。设计过程中选择了合适的磁轴承类型，以保持系统的紧凑和小型化。电磁特性的确定，转子动力学分析的结果，并由高频操作所造成的空气摩擦损失进行了评估。最终的设计是一个组合的径向轴向磁轴承的体积为50立方厘米。
Ultra-high-speed and high-power-density drives are attracting much interest in today's industry. For instance, there are several investigations into mesoscale gas turbine generator systems and turbocompressors for fuel cells. In all ultra-high-speed machinery the bearing is a key technology. Therefore, this paper focuses on the design of a 500,000 rpm active magnetic bearing suitable for use in a 1 kW PM machine to complete an ultra-high-speed electrical drive system. The design procedure selects the suitable magnetic bearing type to keep the system compact and small. The electromagnetic characteristics are determined, the results for the rotor dynamic analysis are presented and the air friction losses caused by the high frequency operation are evaluated. The final design is a combined radial-axial magnetic bearing with a volume of 50 cm3.