Abstract：The accuracy of the permanent magnet synchronous motor initial angle detection is the decisive factor for starting torque value and starting it successfully. Based on the analysis of the inductor saturation effect, the paper proposes the voltage vector method of the rotor initial position angle detection of surface mounted permanent magnet synchronous motor. To deal with the problem of low accuracy and unreliability in the traditional detection method of voltage vector, the reverse direction inductance to add constraints when handling the second wave of voltage vector is used, and proposed increasing the action time of voltage vector to increase the peak current after the second wave of voltage vector. By enhancing the effect of demagnetization and enlarging the differences of each vector current, it finally improves the reliability of initial angle detection. The experimental results verify the feasibility and effectiveness of analysis and design. It shows that the detection method can not only guarantee the rotor static, but also improve reliability greatly and accuracy increased from 7.5°to 1.8°for initial position detection, so it has the great value of practical engineering.
[1] 朱喜华, 李颖晖, 张敬. 基于一种新型滑模观测器的永磁同步电机无传感器控制[J]. 电力系统保护与控制, 2010, 38(13): 6-10. Zhu Xihua, Li Yinghui, Zhang Jing. Senorless control of PMSM based on a novel sliding mode observer[J]. Power System Protection and Control, 2010, 38(13): 6-10. [2] 郭新华, 王永兴, 赵峰, 等. 基于SHEPWM的中压大功率牵引永磁同步电机两电平控制[J]. 电工技术学报, 2012, 27(11): 76-82. Guo Xinhua, Wang Yongxing, Zhao Feng, et al. Two level control technology of PMSM used in medium voltage high power traction system based on SHEPWM [J]. Transactions of China Electrotechnical Society, 2012, 27(11): 76-82. [3] Xie Yue, Vilathgamuwa D M, King Jet Tseng. An observer-based robust adaptive controller for permanent magnet synchronous motor drive with initial rotor angle uncertainty[J]. IEEE Transactions on Energy Conversion, 2005, 20(1): 115-120. [4] 王磊, 李颖晖, 祝晓辉, 等. 永磁同步电机转子位置提取近似分类支持向量机灰色预测方法[J]. 电力系统保护与控制, 2010, 38(23): 97-102. Wang Lei, Li Yinghui, Zhu Xiaohui, et al. Extraction of rotor position for PMSM using PSVMC-GMP system prediction[J]. Power System Protection and Control, 2010, 38(23): 97-102. [5] 刘家曦, 李立毅, 杜鹏程. 考虑磁场交叉耦合的内嵌式永磁同步电机初始位置检测技术[J]. 电工技术学报, 2013, 28(07): 32-38. Liu Jiayi, Li Liyi, Du Pengcheng. Initial rotor position estimation considering magnetic cross-coupling based on IPMSM[J]. Transactions of China Electrotechnical Society, 2013, 28(07): 32-38. [6] 陈书锦, 李华德, 李擎, 等. 永磁同步电动机起动过程控制[J]. 电工技术学报, 2008, 23(07): 39-44. Chen Shujing, Li Huade, Li Qing, et al. Start process control of permanent magnet synchronous motors[J]. Transactions of China Electrotechnical Society, 2008, 23(07): 39-44. [7] 王高林, 杨荣峰, 于泳, 等. 内置式永磁同步电机转子初始位置估计方法[J]. 电机与控制学报, 2010, 14(06): 56-60. Wang Gaolin, Yang Rongfeng, Yu Yong, et al. Initial rotor position estimation for interior permanent magnet synchronous motor[J]. Electric Machines and Control, 2010, 14(06): 56-60. [8] 李毅拓, 陆海峰, 瞿文龙, 等. 一种新颖的永磁同步电机转子初始位置检测方法[J]. 中国电机工程学报, 2013, 33(03): 75-82, 13. Li Yituo, Lu Haifeng, Qu Wenlong, et al. A novel initial rotor position estimation method for permanent magnet synchronous motors[J]. Proceedings of the CSEE, 2013, 33(03): 75-82, 13. [9] Li Shuai, Zhou Bo, Liu Ying. A novel method of initial rotor position estimation for surface mounted permanent magnet synchronous motor[C]. International Conference on Electrical and Control Engineering, 2010: 4924-4927. [10] 王子辉, 陆凯元, 叶云岳. 基于改进的脉冲电压注入永磁同步电机转子初始位置检测方法[J]. 中国电机工程学报, 2011, 31(36): 95-101. Wang Zihui, Lu Kaiyuan, Ye Yunyue. Initial position estimation method for permanent magnet synchronous motor based on improved pulse voltage injection[J]. Proceedings of the CSEE, 2011, 31(36): 95-101. [11] 任雷, 崔苪华, 王宗培, 等．永磁同步电机绕组电感的饱和效应[J]．电工技术学报, 2000, 15(1): 21-25． Ren Lei, Cui Binghua, Wang Zongpei, et al. Saturation effect of PMSM windings inducance[J]. Transactions of China Electrotechnical Society, 2000, 15(1): 21-25. [12] 蒯松岩, 王鹏飞, 黄玉龙. 基于简化电感模型全域SRM无位置传感器研究[J]. 电机与控制学报, 2013, 28(08): 1-8. Kuai Songyan, Wang Pengfei, Huang Yulong. The global position sensor-less technology of switched reluctance motor based on the simple inductance mode[J]. Electric Machines and Control, 2013, 28(08): 1-8.
2015, Vol. 30 
