摘要
无轴承永磁同步电机是自身具有磁悬浮轴承功能的新型特种电机,是一个复杂的强耦合的非线性系统,建立无轴承永磁同步电机径向悬浮力和电机数学模型,是设计无轴承永磁同步电机控制系统的前提,实现其径向悬浮力和电磁转矩之间的解耦控制是电机稳定运行的基本条件。该文在介绍无轴承永磁同步电机径向悬浮力产生原理的基础上,推导了径向悬浮力和电机数学模型,采用基于转子磁场定向控制策略设计了无轴承永磁同步电机矢量控制系统,利用Matlab的Simulink工具箱构建了矢量控制系统,对无轴承永磁同步电机的转速、转矩及转子起浮性能进行了仿真。仿真结果表明控制系统不仅可以实现转子稳定悬浮,而且电机具有良好的动态性能。
The bearingless permanent magnet-type synchronous motor （BPMSM） is a new type bearingless motor, which has function of magnetic bearings in itself, and is a strong-coupled complicated nonlinear system.Establishing exact mathematic models of radial suspension forces and torque is premises condition for designing control system of BPMSM. The decoupling control of the electromagnet torque and radial suspension forces is the base of the stable operation of BPMSM. In this paper, based on the principle of producing radial suspension forces, the mathematic model of radial suspension forces and the motor are deduced. A control system based on rotor flux orientation is designed. And the vector control system is constructed with Matlab Simulink toolbox, and the startup performance of speed, torque and rotor suspension are simulated. The simulation results have shown that the vector control system can ensure rotor suspension steadily, and content desire of dynamic performance of the motor.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第14期120-124,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50275067)
江苏省高技术研究基金项目(BG2005027)
教育部留学回国人员科研启动基金项目~~
关键词
无轴承永磁同步电机
径向悬浮力
数学模型
解耦
仿真
Bearingless permanent magnet-type synchronous motor （BPMSM）
Radial suspension force
Mathematics model
Decoupling
Simulation
