摘要
对无轴承永磁薄片电机(BPMSM)运行过程中产生的偏心位移,以最大偏心方向作为横坐标方向,建立转子偏心的动态坐标系。在该坐标系下采用麦克斯韦应力张量法建立径向悬浮力数学模型。在该模型基础上,提出一种针对转子偏心位移的直接控制策略,设计相应控制器;在MATLAB环境中对BPMSM进行了起动、阶跃响应等仿真试验,并进行了初步试验研究。仿真及试验结果表明采用这种方法进行建模和控制,电机转子能够稳定悬浮,电机具有良好的动、静态特性,验证了控制方法的有效性。
Specific to eccentric displacement of bearingless permanent magnet slice motor （ BPMSM）, dynamic coordinate system of rotor eccentric displacement was build up. The direction of maximum eccentricity was defined as the horizontal direction. Under the coordinate system, a radial suspension force model was deduced with Maxwell stress tensor method. Based on the model, a direct control method for rotor eccentric displacement was proposed and the controller was also designed. Simulation tests of start-up and step response were implemented in MATLAB. Preliminary experiments were implemented on the prototype. The simulation and experimental results showed that modeling and controlling with this method, the rotor had a good stability, and the motor had good dynamic and static characteristics. The validity of the control method was verified.
出处
《电机与控制应用》
北大核心
2015年第4期11-15,共5页
Electric machines & control application
基金
江苏省高校科研成果产业化推进工程项目(JHB2012-39)
江苏高校优势学科建设工程资助项目(苏政办发[2011]6号)
关键词
无轴承永磁薄片电机
动态坐标系
麦克斯韦力
径向悬浮力
矢量控制
bearingless permanent magnet slice motor （BPMSM）
dynamic coordinate system
Maxwell force
radial suspension force
vector control
