中文摘要：

讨论了无轴承开关磁阻电机在高速运行时的电磁设计、结构强度、稳定性设计、转子应力设计、散热设计、磁性材料选择等关键技术问题，给出了在设计过程中应注意的问题和优化设计的方法依据。考虑上述电机设计原则，对一台7.5kW无轴承开关磁阻电机进行了电磁和结构参数的优化设计，建立了基于ANSYS的二维有限元模型，对径向悬浮力和转矩特性进行了计算，比较了仿真和理论计算结果；在实验样机上测量了主绕组、悬浮绕组电感。结果表明，该设计方法满足了无轴承高速开关磁阻电机的设计要求，对进一步进行参数优化具有参考价值。

英文摘要：

To deal with the key technology for designing a high-speed bearingless switched reluctance motors （BSRM） ： electromagnetic design, structural strength and stability design, rotor stress design, thermal design, and magnetic material choosing. The principal of design and optimizing methods are presented. According to these considerations, a 7.5 kW BSRM is designed. Radial force and electrical-magnetic torque are analyzed by employing the 2-D Finite Element Method, using ANSYS software, The motor electrical-magnetic designs are verified, through comparing the results of simulation with those of theoretical calculation and testing inductance of main and radial force windings of prototype motor. It is important to further optimize the parameters for high-speed BSRM.