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清华大学学报(自然科学版)  2015, Vol. 55 Issue (10): 1072-1078    DOI: 10.16511/j.cnki.qhdxxb.2015.22.007
  机械工程 本期目录 | 过刊浏览 | 高级检索 |
无轴承异步电机转子电阻自适应在线辨识
詹立新, 周凯
清华大学 机械工程系, 北京 100084
Adaptive online rotor resistance identification for bearingless induction motors
ZHAN Lixin, ZHOU Kai
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
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摘要 针对无轴承异步电机悬浮性能受转子电阻变化影响的问题,提出了一种基于悬浮力指令观测的无轴承异步电机转子电阻自适应在线辨识方法。分析了转子电阻变化对转矩绕组气隙磁链辨识影响的机理,并利用悬浮控制系统中悬浮力指令对转矩绕组气隙磁链敏感的特性,通过对悬浮力指令的实时观测实现转子电阻自适应在线辨识。搭建了无轴承异步电机实验平台。实验结果表明: 采用转子电阻自适应在线辨识方法后,无轴承异步电机转子径向位移峰峰值降低了60%。
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詹立新
周凯
关键词 无轴承异步电机转子磁场定向转子电阻辨识悬浮控制    
Abstract:Bearingless induction motors always suffer from the influence of rotor resistance variations. An adaptive online rotor resistance identification method is developed here based on an observer of the suspension force commands. This study analyzes the influence of the rotor resistance variation on the air-gap flux identification. Real-time online identification of the rotor resistance is based on observations of the suspension force commands, which utilizes the principle that the suspension force commands are sensitive to the air-gap flux in the torque windings. Tests of a bearingless induction motor show that the peak-peak displacements of the rotor are reduced by 60% by this adaptive online rotor resistance identification method.
Key wordsbearingless induction motor    rotor field orientation    rotor resistance identification    suspension control
收稿日期: 2014-04-28      出版日期: 2015-11-16
ZTFLH:  TM346  
基金资助:国家自然科学基金项目(51275257)
通讯作者: 周凯,教授,E-mail:zhoukai@mail.tsinghua.edu.cn     E-mail: zhoukai@mail.tsinghua.edu.cn
作者简介: 詹立新(1987-),男(汉),北京,博士研究生。
引用本文:   
詹立新, 周凯. 无轴承异步电机转子电阻自适应在线辨识[J]. 清华大学学报(自然科学版), 2015, 55(10): 1072-1078.
ZHAN Lixin, ZHOU Kai. Adaptive online rotor resistance identification for bearingless induction motors. Journal of Tsinghua University(Science and Technology), 2015, 55(10): 1072-1078.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.22.007  或          http://jst.tsinghuajournals.com/CN/Y2015/V55/I10/1072
  图1 径向悬浮力产生原理图
  图2 基于转子电阻在线辨识的无轴承异步电机控制框图
  图3 由转子电阻误差引起悬浮力相位偏移
  图4 转子电阻自适应在线辨识方法
  图5 辨识前后悬浮力指令值和转子电阻辨识值波形曲线
  图6 无轴承异步电机实验样机
  图7 静浮下转子x-y 轴径向位移波形图
  图8 加转子电阻辨识前悬浮绕组电流波形图
  图9 加转子电阻辨识后悬浮绕组电流波形图
  图10 未加转子电阻辨识前的转子径向位移波形图
  图11 加转子电阻辨识后转子径向位移波形图
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