Abstract：Starting and low speed operation control is one of the key research points in sensorless control of switched reluctance motor drive. A new full-cycle inductance based sensorless method for switched reluctance motor is proposed in this paper. At standstill and those with initial speed conditions, each phase is injected with high frequency pulses; at driving operation mode, the chopping current closed loop control is carried out in the excited region and high frequency pulses are injected in the unexcited region. In these two operation modes, the full cycle phase inductance signals are obtained indirectly by measuring the positive and negative slope difference of phase current. By setting the lower threshold and higher threshold, the three-phase inductance can be subregioned for choosing the suitable estimation phase, which can avoid the modeling error at unaligned and aligned positions and simplified the position-inductance model. Thereby, in the estimation phase, the rotor position can be estimated accurately from the position- inductance model instantaneously, which can be used for initial positioning and sensorless starting. To ensure lacking-phase fault-tolerant operation, a new subregion based position estimation method is also proposed based on the full-cycle inductance of the normal phase. Experiments verify the validity of the sensorless scheme.
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. Transactions of China Electrotechnical Society, 2013, 28(2): 145-154.
[1] 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. [2] Hongwei G, Salmasi F R, Ehsani M. Inductance model-based sensorless control of the switched reluctance motor drive at low speed[J]. IEEE Transactions on Power Electronics, 2004, 19(6): 1568-1573. [3] Fahimi B, Emadi A, Raymond B Sepe. Four quadrant position sensorless control in SRM drives over the entire speed range[J]. IEEE Transaction on Power electronics, 2005, 20(1): 154-163. [4] Lyons, J P, MacMinn S R, Preston M A. Flux-current methods for SRM rotor position estimation[C]. Industry Applications Society Annual Meeting, Deanborn, 1991, 1: 482-487. [5] Hossain S, Husain I, Klode H, et al. Four quadrant and zero speed sensorless control of a switched reluctance motor[J]. IEEE Transactions on Industrial Applications, 2003, 39(5): 1343-1349. [6] Hudson C A, Lobo N S, Krishnan R. Sensorless control of single switch-based switched reluctance motor drive using neural network[J]. IEEE Transactions on Industrial Electronics, 2008, 55(1): 321-329. [7] Paramasivam S, Vijayan S, Vasudevan M, et al. Real-time verification of AI based rotor position estimation techniques for a 6/4 pole switched reluctance motor drive[J]. IEEE Transactions on Magnetics, 2007, 43(7): 3209-3222. [8] 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. [9] 郑洪涛, 蒋静坪, 徐德鸿, 等. 开关磁阻电动机无位置传感器能量优化控制[J]. 中国电机工程学报,2004, 24(1): 153-157. [10] Bu J, Xu L. Eliminating starting hesitation for reliable sensorless control of switched reluctance motors[J]. IEEE Transactions on Industrial Applications, 2001, 37(1): 59-66. [11] Gao H, Salmasi F R, Ehsani M. Sensorless control of SRM at standstill[C]. IEEE Applied Power Electronic Conference and Exposition, 2001, 2:850-856. [12] 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. [13] Trakrancharoungsook K, Kittiratsatcha K. Position estimation technique of a switched reluctance motor at standstill[C]. Power Conversion Conference, 2007, 3: 238-244. [14] 刘卫国, 宋受俊, Wue Sweafer. 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. [15] Bamba T, Komatsuzaki A, Miki I. Estimation of rotor position for switched reluctance motor at standstill[C]. Power Conversion Conference, 2007, 3: 259-263. [16] Krishnamurthy M, Edrington C C, Fahimi B. Prediction of rotor position at standstill and rotating shaft conditions in switched reluctance machines[J]. IEEE Transaction on Power Electronics, 2006, 21(1): 225-233. [17] 沈磊, 吴建华, 杨仕友. 基于自举电路的开关磁阻电机初始位置估计方法[J]. 中国电机工程学报, 2011, 31(6): 98-102. [18] 毛宇阳, 邓智泉, 蔡骏. 基于电流斜率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.
2013, Vol. 28 
