Cheng Wenjie, Li Wei, Xiao Ling, Li Ming, Tian Yongsheng, Sun Yanhua, Yu Lie
Department of Basic Courses, Mechanics Research Center, Xi'an University of Science and Technology , Xi'an, Shaanxi 710054, China.
Institute of Engineering Thermophysics, Chinese Academy of Science Corporation or Laboratory , No. 11, Beisihuanxi Road, 100190, Beijing, China.
AIP Adv. 2017 Jan 11;7(5):056627. doi: 10.1063/1.4974057. eCollection 2017 May.
Aiming at the ultra high speed permanent magnet synchronous motor (PMSM) supported by gas foil bearings (GFBs), this paper calculates the transient line starting of the motor. Firstly, the start effect of the rotor composed of cylindrical PM and stainless steel sleeve is studied. Then, in order to enhance the start torque, copper ring, nickel ring and copper squirrel-cage are introduced in the rotor and their start effect are analysed, respectively. It can be found that the rotor including nickel ring can be accelerated to set speed, but all the other rotors are failed due to the higher PM and braking torques. It can be concluded that some material owning slight large relative permeability can be applied in the rotor to reduce the PM field and contribute to start by using the line-start method.
针对由气体箔片轴承（GFB）支撑的超高速永磁同步电机（PMSM），本文计算了该电机的瞬态直线启动过程。首先，研究了由圆柱形永磁体和不锈钢套筒组成的转子的启动效果。然后，为了提高启动转矩，在转子中引入了铜环、镍环和铜鼠笼，并分别分析了它们的启动效果。结果发现，包含镍环的转子能够加速到设定速度，而其他所有转子均因永磁转矩和制动转矩较大而启动失败。可以得出结论，一些相对磁导率稍大的材料可应用于转子，以减小永磁磁场，并有助于通过直线启动方法实现启动。
