摘要
为改善基于矢量控制的无轴承异步电机运行性能,提高转子悬浮精度,研究一种无轴承异步电机改进型重复控制策略。无轴承异步电机悬浮系统在旋转坐标系下是一个多变量的耦合系统,首先推导出悬浮控制系统简化模型,在传统重复控制基础上,引入分数延迟滤波器和加权扩展型重复控制内模,提高重复控制对频率波动的鲁棒性,并推导出改进型重复控制系统稳定性判据,实现了因转子质量不平衡所引起振动的高精度抑制。最后,建立无轴承异步电机仿真与实验系统,与传统重复控制进行比较研究。研究结果表明:无轴承异步电机改进型重复控制策略在稳态时可有效抑制转子振动,提高无轴承异步电机转子悬浮精度。
In order to improve the operating performance of a bearingless induction motor(BIM) based on vector control and increase the rotor suspension accuracy, an improved repetitive control strategy for the BIM was proposed. The BIM suspension system was a multi-variable coupling system in the rotating frame. A simplified model of suspension control system was deduced firstly. Based on the conventional repetitive control, the fractional delay filter and the weighted extended repetitive control internal model were introduced. The robustness of repetitive control to frequency fluctuation was improved, and the stability criterion of the improved repetitive control system was given. The high-precision suppression of vibration caused by rotor mass imbalance was realized. The simulation and experimental systems of the BIM were finally built and compared with conventional repetitive control. The results show that the improved repetitive control strategy for the BIM can effectively suppress the vibration of the rotor in steady state and improve the suspension accuracy of the BIM.
作者
叶小婷
杨泽斌
孙晓东
YE Xiaoting;YANG Zebin;SUN Xiaodong(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第20期6104-6112,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51475214,51875261)
江苏省研究生科研与实践创新计划项目(KYCX19_1605)~~
关键词
无轴承异步电机
矢量控制
重复控制
不平衡振动
悬浮转子
bearingless induction motor (BIM)
vector control
repetitive control
unbalance vibration
suspended rotor
