1.College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China 2.College of Engineering Qufu Normal University Rizhao 276826 China
Abstract：In this paper,an improved impressed diagnostic pulse-voltage method to estimate the rotor position of 12/8 switched reluctance motor (SRM) with segmental rotors is presented.Instead of injecting the impressed voltage pulse into every phase in the conventional approach,the proposed method only injects the pulse into one inactive phase.Because the inductance of the SRM does not vary obviously,the noise in the small characteristic current signal may cause failure of the sensorless method.The new sensorless method is to inject a pulse diagnostic signal with increasing width into the inactive phases.Thereafter,the increased variations of the characteristic current are compared with some appropriate thresholds to estimate rotor position.Finally,the improved impressed diagnostic pulse-voltage method combined with the current gradient sensorless method (CGSM) is proposed to reduce the error of voltage pulse injection method at high speeds.The experiment results demonstrate the feasibility and the practicality of the proposed method.
[1] 王宏华.开关磁阻电动机调速控制技术[M].北京:机械工业出版社,1995. [2] 吴建华.开关磁阻电机设计与应用[M].北京:机械工业出版社,2000. [3] Ehsani M,Fahimi B.Elimination of position sensors in switched reluctance motor drives:state of the art and future trends[J].IEEE Transactions on Industrial Electronics,2002,49(1):40-47. [4] Ehsani M,Husain I,Kulkarni A B.Elimination of discrete position sensor and current sensor in switched reluctance motor drives[J].IEEE Transactions on Industrial Application,1992,28(1):128-135. [5] Acarnley P P,Hill R J,Hooper C W.Detection of rotor position in stepping and switched motors by monitoring of current waveforms[J].IEEE Transactions on Industrial Electronics,1985,32(3):215-222. [6] Husain I,Ehsani M.Rotor position sensing in switched reluctance motor drives by measuring mutually induced voltages[J].IEEE Transactions on Industry Applications,1994,30(3):665-672. [7] Suresh G,Fahimi B,Rahman K M,et al.Inductance based position encoding for sensorless SRM drives[C].30th Annual IEEE Power Electronics Specialists Conference,Charleston,SC,1999,2:832-837. [8] Bu Jianrong,Xu Longya.Eliminating starting hesitation for reliable sensorless control of switched reluctance motors[J].IEEE Transactions on Industry Applications,2001,37(1):59-66. [9] 刘卫国,宋受俊,Uwe Schfer.无位置传感器开关磁阻电机初始位置检测方法[J].中国电机工程学报,2009,29(24):91-97. Liu Weiguo,Song Shoujun,Uwe Schfer.Initial position estimation of sensorless switched reluctance motor[J].Proceedings of the CSEE,2009,29(24):91-97. [10]邱亦慧,马志源,詹琼华.无位置传感器开关磁阻电机的无反转起动研究[J].电工技术学报,2001,16(2):18-22. Qiu Yihui,Ma Zhiyuan,Zhan Qionghua.Start exploration of position sensorless SRM without rotor reversing[J].Transactions of China Electrotechnical Society,2001,16(2):18-22. [11]Gao H,Salmasi F R,Ehsani M.Sensorless control of SRM at standstill[C].Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition,Anaheim,CA,2001:850-856. [12]李景男,王旭东.基于两相脉冲激励的开关磁阻电动机的无位置传感器转子位置检测[J].电机与控制学报,2002,6(1):6-9. Li Jingnan,Wang Xudong.Sensorless rotor position detection of SRM based on voltage pulses to two phases[J].Electric Machines and Control,2002,6(1):6-9. [13]蔡骏,邓智泉.基于全周期电感法的开关磁阻电机无位置传感器控制技术[J].电工技术学报,2013,28(2):145-154. Cai Jun,Deng Zhiquan.Sensorless control of switched reluctance motors based on full-cycle inductance method[J].Transations of China Electrotechnical Society,2013,28(2):145-154. [14]毛宇阳,邓智泉,蔡骏.基于电流斜率差值法的开关磁阻电机无位置传感器技术[J].电工技术学报,2011,26(9):91-97. Mao Yuyang,Deng Zhiquan,Cai Jun.Sensorless control of switched reluctance motor based on current slope difference method[J].Transations of China Electrotechnical Society,2011,26(9):91-97. [15]Gallegos-Lopez G,Kjaer P C,Miller T J E.A new sensorless method for switched reluctance motor drives[J].IEEE Transactions on Industrial Application,1998,34(4):832-840. [16]Cai Jun,Deng Zhiquan.Sensorless control of switched reluctance motor based on phase inductance vectors[J].IEEE Transactions on Power Electronics,2012,27(7):3410-3423. [17]夏长亮,谢细明,史婷娜,等.开关磁阻电机小波神经网络无位置传感器控制[J].电工技术学报,2008,23(7):33-38. Xia Changliang,Xie Ximing,Shi Tingna,et al.Position sensorless control of switched reluctance motor using waveletneural networks[J].Transactions of China Electrotechnical Society,2008,23(7):33-38. [18]张旭隆,谭国俊,蒯松岩,等.在线建模的开关磁阻电机四象限运行无位置传感器控制[J].电工技术学报,2012,27(7):26-33. Zhang Xulong,Tan Guojun,Kuai Songyan,et al.Four-quadrant position sensorless control of switched reluctance motors based on on-line modeling[J].Transactions of China Electrotechnical Society,2012,27(7):26-33. [19]陈小元,邓智泉,王晓琳,等.分块开关磁阻电机的研究现状及其新结构构想[J].电工技术学报,2011,26(3):20-28. Chen Xiaoyuan,Deng Zhiquan,Wang Xiaolin,et al.Current status and new configurations of segmented switched reluctance machines[J].Transactions of China Electrotechnical Society,2011,26(3):20-28. [20]陈小元,邓智泉,许培林,等.整距绕组分块转子开关磁阻电机的电磁设计[J].中国电机工程学报,2011,31(36):109-115. Chen Xiaoyuan,Deng Zhiquan,Xu Peilin,et al.Electromagnetic design of a switched reluctance motor with segmental rotors and full-pitch windings[J].Proceedings of the CSEE,2011,31(36):109-115.
2015, Vol. 30 
