基于高频脉冲注入的无轴承开关磁阻电机转子位置与径向位移检测方法
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摘要
为提高无轴承开关磁阻电机(BSRM)的集成度和运行可靠性,探索无轴承电机的转子转角和径向位移的自检测方法,通过在BSRM非导通相的主绕组中注入高频脉冲信号,实现了同时检测转子的转角位置和径向位移的目的。一方面,利用绕组电流的斜率差值与绕组电感的关系,得到BSRM电感的实时分布信息,从而解算得到转子的实时转角位置。另一方面,通过检测悬浮绕组的感应电动势来获取主、悬浮绕组间的互感信息,利用互感与转子径向位置的关系,解算得到转子的实时径向位移。从而最终仅通过对主绕组注入一组高频脉冲来同时估测BSRM的转子转角和径向位移。实验结果证实了所提方法的有效性。
In conventional bearingless switched reluctance motors( BSRMs),some transducers should be installed to detect the rotor angle position and the shaft radial displacements to implement the rotation and magnetic levitation simultaneously. In order to improve the integration and reliability of BSRMs,the self-sensing method of the rotor angle position and radial displacements is investigated in this paper. The rotor angle position and radial displacements of BSRMs are estimated simultaneously through injecting a series of high-frequency voltage pulses into main windings of inactive phases. According to the relationship between the induced-current slope and the inductance,the real-time distribution of inductances could be obtained. As a result,the real-time angle position of BSRMs can be estimated. Meanwhile,mutual inductances can be obtained by detecting the induced electromotive force of levitation windings. Therefore,the radial displacements can also be calculated according to the relationship between the mutual inductances and radial displacements. Therefore,the proposed method can estimate the rotor angle position and radial displacements at the same time only by injecting one series of high-frequency voltage pulses into main windings. Experimental results verify the effectiveness of the proposed method.
In conventional bearingless switched reluctance motors( BSRMs),some transducers should be installed to detect the rotor angle position and the shaft radial displacements to implement the rotation and magnetic levitation simultaneously. In order to improve the integration and reliability of BSRMs,the self-sensing method of the rotor angle position and radial displacements is investigated in this paper. The rotor angle position and radial displacements of BSRMs are estimated simultaneously through injecting a series of high-frequency voltage pulses into main windings of inactive phases. According to the relationship between the induced-current slope and the inductance,the real-time distribution of inductances could be obtained. As a result,the real-time angle position of BSRMs can be estimated. Meanwhile,mutual inductances can be obtained by detecting the induced electromotive force of levitation windings. Therefore,the radial displacements can also be calculated according to the relationship between the mutual inductances and radial displacements. Therefore,the proposed method can estimate the rotor angle position and radial displacements at the same time only by injecting one series of high-frequency voltage pulses into main windings. Experimental results verify the effectiveness of the proposed method.
引文
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[11]周竟成,王晓琳,邓智泉,等.开关磁阻电机的电感分区式无位置传感器技术[J].电工技术学报,2012,27(7):34-40.Zhou Jingcheng,Wang Xiaolin,Deng Zhiquan,et al.The position sensorless technology of switched reluctance motor based on the regional comparison of three-phase inductance[J].Transactions of China Electrotechnical Society,2012,27(7):34-40.
[12]史婷娜,吴志勇,张茜,等.基于绕组电感变化特性的无刷直流电机无位置传感器控制[J].中国电机工程学报,2012,32(27):45-52.Shi Tingna,Wu Zhiyong,Zhang Qian,et al.Sensorless control of BLDC motors based on variation behavior of winding inductances[J].Proceedings of the CSEE,2012,32(27):45-52.
[13]蔡骏,邓智泉,胡荣光.开关磁阻电机在位置检测技术中的应用[J].电工技术学报,2014,29(3):150-159.Cai Jun,Deng Zhiquan,Hu Rongguang.Applications of switched reluctance motors in position sensing[J].Transactions of China Electrotechnical Society,2014,29(3):150-159.
[14]张磊,刘闯,王云林,等.开关磁阻电机变双电流阈值的无位置传感器技术[J].中国电机工程学报,2014,34(27):4683-4690.Zhang Lei,Liu Chuang,Wang Yunlin,et al.Position sensorless technology of switched reluctance machines based on double variable current thresholds[J].Proceedings of the CSEE,2014,34(27):4683-4690.
[2]陈杰,邓智泉,杨艳,等.无轴承开关磁阻电机质量偏心振动补偿[J].电工技术学报,2016,31(18):13-20.Chen Jie,Deng Zhiquan,Yang Yan,et al.Compensation of mass eccentricity for a bearingless switched reluctance motor[J].Transactions of China Electrotechnical Society,2016,31(18):13-20.
[3]孙玉坤,袁野,黄永红,等.磁悬浮开关磁阻电机及其关键技术发展综述[J].电工技术学报,2015,30(22):1-8.Sun Yukun,Yuan Ye,Huang Yonghong,et al.Development of the bearingless switched reluctance motor and its key technologies[J].Transactions of China Electrotechnical Society,2015,30(22):1-8.
[4]王喜莲,葛宝明,王旭东.一种无轴承开关磁阻电机悬浮性能分析[J].电机与控制学报,2013,17(1):7-12.Wang Xilian,Ge Baoming,Wang Xudong.Magnetic suspension performance analysis of a bearingles switched reluctance motor[J].Electrical Machines and Control,2013,17(1):7-12.
[5]朱志莹,孙玉坤,嵇小辅,等.磁悬浮开关磁阻电机转子位移/位置观测器设计[J].中国电机工程学报,2012,32(12):83-89.Zhu Zhiying,Sun Yukun,Ji Xiaofu,et al.Displacement and position observers designing for bearingless switched reluctance motor[J].Proceedings of the CSEE,2012,32(12):83-89.
[6]项倩雯,孙玉坤,嵇小辅,等.单绕组磁悬浮开关磁阻电机无径向位移传感器控制[J].电工技术学报,2013,28(8):259-267.Xiang Qianwen,Sun Yunkun,Ji Xiaofu,et al.Radial displacement sensorless control for single-winding bearingless switched reluctance motors[J].Transactions of China Electrotechnical Society,2013,28(8):259-267.
[7]周云红,孙玉坤,嵇小辅,等.磁悬浮开关磁阻电机径向位移自检测[J].中国电机工程学报,2012,32(6):150-155.Zhou Yunhong,Sun Yukun,Ji Xiaofu,et al.A radial displacement self-sensing method for bearingless switched reluctance motors[J].Proceedings of the CSEE,2012,32(6):150-155.
[8]艾武,吴保全,曹家勇,等.SRM间接位置检测技术综述[J].中小型电机,2004,31(2):48-53.Ai Wu,Wu Baoquan,Cao Jiayong,et al.Review of sensorless techniques of switched reluctance motor[J].Small and Medium Electric Machines,2004,31(2):48-53.
[9]吴红星,倪天,郭庆波,等.开关磁阻电机转子位置检测技术综述(一)[J].微电机,2011,44(3):76-83.Wu Hongxing,Ni Tian,Guo Qingbo,et al.Summary of detecting rotor position technique for switched reluctance motors[J].Micromotor,2011,44(3):76-83.
[10]吴红星,倪天,郭庆波,等.开关磁阻电机转子位置检测技术综述(二)[J].微电机,2011,44(4):1-6.Wu Hongxing,Ni Tian,Guo Qingbo,et al.Summary of detecting rotor position technique for switched reluctance motors[J].Micromotor,2011,44(4):1-6.
[11]周竟成,王晓琳,邓智泉,等.开关磁阻电机的电感分区式无位置传感器技术[J].电工技术学报,2012,27(7):34-40.Zhou Jingcheng,Wang Xiaolin,Deng Zhiquan,et al.The position sensorless technology of switched reluctance motor based on the regional comparison of three-phase inductance[J].Transactions of China Electrotechnical Society,2012,27(7):34-40.
[12]史婷娜,吴志勇,张茜,等.基于绕组电感变化特性的无刷直流电机无位置传感器控制[J].中国电机工程学报,2012,32(27):45-52.Shi Tingna,Wu Zhiyong,Zhang Qian,et al.Sensorless control of BLDC motors based on variation behavior of winding inductances[J].Proceedings of the CSEE,2012,32(27):45-52.
[13]蔡骏,邓智泉,胡荣光.开关磁阻电机在位置检测技术中的应用[J].电工技术学报,2014,29(3):150-159.Cai Jun,Deng Zhiquan,Hu Rongguang.Applications of switched reluctance motors in position sensing[J].Transactions of China Electrotechnical Society,2014,29(3):150-159.
[14]张磊,刘闯,王云林,等.开关磁阻电机变双电流阈值的无位置传感器技术[J].中国电机工程学报,2014,34(27):4683-4690.Zhang Lei,Liu Chuang,Wang Yunlin,et al.Position sensorless technology of switched reluctance machines based on double variable current thresholds[J].Proceedings of the CSEE,2014,34(27):4683-4690.