Direct torque and direct suspension force control of bearingless permanent magnet synchronous motor
Direct torque and direct suspension force control of bearingless permanent magnet synchronous motor
复制标题
无轴承永磁同步电机直接转矩和直接悬力控制
DOI：
10.1109/ccdc.2010.5498804
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
H. Jia
中科院分区：
文献类型：
--
作者：
Huangqiu Zhu;Er Tan;Chengbo Wang;Zhenyue Huang;H. Jia
无轴承永磁同步电动机是一个多变量、强耦合的非线性系统。针对永磁同步电动机转矩与悬浮力动态解耦控制的难题，将传统永磁同步电动机直接转矩控制的理论和方法应用于BPMSM的转矩控制。借鉴直接转矩控制的思想，构造了一个以径向悬浮力为内环、转子径向位移为外环的双闭环控制系统，实现了对径向悬浮力的直接控制。推导了基于空间矢量脉宽调制（SVM）策略的直接转矩控制（DTC）和直接悬浮力控制（DSFC）算法，设计了BPMSM的DTC和DSFC系统，并利用Matlab软件进行了仿真。控制系统结构简单，控制系统具有较强的鲁棒性。仿真结果表明，转子悬浮稳定，转矩和径向悬浮力可独立控制，系统具有良好的静动态性能。
A bearingless permanent magnet synchronous motor (BPMSM) is a multi-variable and strong-coupled nonlinear system. To solve the difficult problem of dynamic decoupling control among torque and suspension forces, the theory and method of direct torque control (DTC) for traditional permanent magnet synchronous motors are applied to the torque control of the BPMSM in the paper. With the reference of direct torque control, a double closed-loop control system, in which the inner closed-loop is radial suspension force loop and the outer closed-loop is rotor radial displacement loop, is constructed to control the radial suspension forces directly. The DTC and direct suspension force control (DSFC) algorithms based on space vector pulse width modulation (SVM) strategy are deduced, and the DTC and DSFC system for the BPMSM are designed and simulated with Matlab software. The structure of control system is simple, and control system has strong robustness. The simulation results have shown that the rotor can be suspended steadily, and torque and radial suspension forces can be controlled independently, and the system has a good static and dynamic performance.