Abstract：The rotating high-frequency injection method can estimate the rotor position of permanent magnet synchronous motor at zero speed and low speed, but the use of the filter may bring estimation errors during the demodulation process of the rotor position. The paper presents a method for online compensation of rotor estimation error using positive sequence current component. The mechanism of the compensation method was described when the motor was in zero speed and low speed. The phase delay of positive and negative sequence current in demodulation process was theoretically derived. The compensation effect of the positive sequence current was analyzed considering the influence of the stator resistance. The error compensation amount and rotor position obtained by the heterodyne method have multiple convergence points. Hence, a convergence point detection was added to eliminate some error convergence points. Simulation and experiments verified the effect of the proposed method on rotor position error compensation.
[1] 刘毅, 贺益康, 秦峰, 等. 基于转子凸极跟踪的无位置传感器永磁同步电机矢量控制研究[J]. 中国电机工程学报, 2005, 25(17): 121-126. Liu Yi, He Yikang, Qin Feng, et al.Investigation of rotor saliency tracking based sensorless vector control drive for PMSM[J]. Proceedings of the CSEE, 2005, 25(17): 121-126. [2] 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(7): 39-44. Chen Shujin, Li Huade, Li Qing, et al.Start process control of permanent magnet synchronous motors[J]. Transactions of China Electrotechnical Society, 2008, 23(7): 39-44. [3] 王高林, 杨荣峰, 李刚, 等. 基于高频信号注入的IPMSM无位置传感器控制策略[J]. 电工技术学报, 2012, 27(11): 62-68. Wang Gaolin, Yang Rongfeng, Li Gang, et al.Position sensorless control strategy of IPMSM based on high frequency signal injection[J]. Transactions of China Electrotechnical Society, 2012, 27(11): 62-68. [4] 秦峰, 贺益康, 刘毅, 等. 两种高频信号注入法的无传感器运行研究[J]. 中国电机工程学报, 2005, 25(5): 116-121. Qin Feng, He Yikang, Liu Yi, et al.Comparative investigation of sensorless control with two high- frequency signal injection schemes[J]. Proceedings of the CSEE, 2005, 25(5): 116-121. [5] 刘海东, 周波, 郭鸿浩, 等. 脉振高频信号注入法误差分析[J]. 电工技术学报, 2015, 30(6): 38-44. Liu Haidong, Zhou Bo, Guo Honghao, et al.Error analysis of high frequency pulsating signal injection method[J]. Transactions of China Electrotechnical Society, 2015, 30(6): 38-44. [6] 李华阳, 王涛, 林环城, 等. 基于高频注入的PMSM无传感器控制的误差分析[J]. 微特电机, 2013, 41(11): 64-70. Li Huayang, Wang Tao, Lin Huancheng, et al.Analysis of position errors in high-frequency carrier signal injection based sensorless control of PMSM[J]. Small & Special Electrical Machines, 2013, 41(11): 64-70. [7] 刘兵, 周波. 脉振高频电压注入SPMSM无位置传感器控制的估计误差分析与抑制方法[J]. 中国电机工程学报, 2018, 38(14): 4232-4241. Liu Bing, Zhou Bo.Analysis and compensation of position estimation error in SPMSM sensor-less control based on high frequency pulsating voltage injection[J]. Proceedings of the CSEE, 2018, 38(14): 4232-4241. [8] 吕晓源, 刘刚, 毛琨, 等. 基于虚拟脉振高频注入法的永磁电机初始位置检测[J]. 电工技术学报, 2017, 33(23): 34-40. Lü Xiaoyuan, Liu Gang, Mao Kun, et al.Initial position detection of permanent magnet motor based on virtual pulsating high-frequency injection method[J]. Transactions of China Electrotechnical Society, 2017, 33(23): 34-40. [9] 廖军, 张兴, 杨淑英, 等. 改进高频信号注入法的IPMSM转子位置检测研究[J]. 合肥工业大学学报(自然科学版), 2010, 33(8): 1161-1165. Liao Jun, Zhang Xing, Yang Shuying, et al. Research on the IPMSM rotor position estimation based on improved high frequency injection method[J]. Journal of Hefei University of Technology (Natural Science, 2010), 33(8): 1161-1165. [10] Kim S I, Im J H, Song E Y, et al.A new rotor position estimation method of IPMSM using all-pass filter on high-frequency rotating voltage signal injection[J]. IEEE Transactions on Industrial Elec- tronics, 2016, 63(10): 6499-6509. [11] Wang Gaolin, Xiao Dianxun, Zhang Guoqiang, et al.Sensorless control scheme of IPMSMs using high- frequency orthogonal square-wave voltage injection into stationary reference frame[J]. IEEE Transactions on Power Electronics, 2018, 34(3): 2573-2584. [12] Gabriel F, De Belie F, Neyt X, et al.High-frequency issues using rotating voltage injections intended for position self-sensing[J]. IEEE Transactions on Indu- strial Electronics, 2013, 60(12): 5447-5457. [13] Kim S, Ha J I, Sul S K.PWM switching frequency signal injection sensorless method in IPMSM[J]. IEEE Transactions on Industry Applications, 2012, 48(5): 1576-1587. [14] Kim S, Kwon Y C, Sul S K, et al.Position sensorless operation of IPMSM with near PWM switching frequency signal injection[C]//IEEE International Conference on Power Electronics & ECCE Asia, Jeju, 2011: 1660-1665. [15] Ji Xinhai, Ni Ronggang, Chen Wei.High frequency voltage injection methods and observer design for initial position detection of permanent magnet synchronous machines[J]. IEEE Transactions on Power Electronics, 2018, 33(9): 7971-7979. [16] 刘景林, 鲁家栋. 基于相电流正负序分量相角差的高精度内置式永磁同步电机转子初始位置检测方法[J]. 电工技术学报, 2016, 31(23): 63-69. Liu Jinglin, Lu Jiadong.High-precision estimation method of initial rotor position for IPMSM based on phase difference of positive and negative sequence current component[J]. Transactions of China Electro- technical Society, 2016, 31(23): 63-69. [17] 杨健, 杨淑英, 李浩源, 等. 基于旋转高频电压注入的永磁同步电机转子初始位置辨识方法[J]. 电工技术学报, 2018, 33(15): 3547-3555. Yang Jian, Yang Shuying, Li Haoyuan, et al.Initial rotor position estimation for IPMSM based on high frequency rotating voltage injection[J]. Transactions of China Electrotechnical Society, 2018, 33(15): 3547-3555. [18] 李浩源, 张兴, 杨淑英, 等. 基于旋转高频注入的内置式永磁同步电机初始位置检测算法[J]. 电工技术学报, 2018, 33(8): 1723-1731. Li Haoyuan, Zhang Xing, Yang Shuying, et al.A detecting algorithm for initial position of interior permanent magnet synchronous motor based on rotating high frequency injection[J]. Transactions of China Electrotechnical Society, 2018, 33(8): 1723-1731. [19] Wang Tianhao, Shi Bowen, Xu J, et al.Accuracy improvement of carrier signal injection sensorless control for IPMSM in consideration of inverter nonlinearity[C]//IEEE Conference of the IEEE Indu- strial Electronics Society, Yokohama, Japan, 2016: 273-278. [20] 刘家曦. 无传感器内嵌式永磁同步电机转子磁极位置检测技术研究[D]. 哈尔滨: 哈尔滨工业大学, 2010. [21] 高健伟. 基于高频注入法的永磁同步电机转子位置估计误差的分析[D]. 济南: 山东大学, 2012.
2020, Vol. 35 
