分析了无轴承永磁同步电机(BPMSM)的悬浮原理,在转子中加入了一组阻尼线圈,建立了带有阻尼线圈BPMSM径向悬浮力的精确数学模型。通过对加入阻尼线圈前后的数学模型进行计算、对比、分析,证明了阻尼线圈对转子稳定性的增强。采用转子磁场定向控制策略设计并构建了BPMSM的控制系统,对转子的位移等参数进行仿真。结果表明加入阻尼线圈后,有效提高了电机的稳定悬浮性能及系统的鲁棒性。

The principle of suspension of bearingless permanent magnet synchronous motor (BPMSM) was analyzed. A set of damping coil was added on the rotor, and an accurate mathematical model of radial suspension force for BPMSM was established. The mathematical model was calculated, compared and analyzed. The results showed that the stability of the rotor was enhanced. By using rotor magnetic field directional control strategy, the control system of BPMSM was designed and constructed. Then the displacement of the rotor and other parameters was simulated. The simulation results showed that the stability of the motor and the robustness could be improved effectively after adding the damping coil.

TM 351

安徽省工业节电与电能质量控制协同创新中心开放课题(KFKT201504);河北省高等学校科学技术研究重点项目(ZD2017044);河北省重点研发计划项目(16211806D)