TENG Qing-fang1,2, CUI Hong-wei3, TIAN Jie1
（1.School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China；2. Key Laboratory of Opto-technology and Intelligent Control （Lanzhou Jiaotong University）, Ministry of Education, Lanzhou 730070, China； 3. China Communications Second Highway Consultant Company Limited, Wuhan 430056, China）
Abstract： A novel double extended state observers (ESOs)-based field-oriented control (FOC) strategy is developed for three-phase permanent magnet synchronous motor (PMSM) drive systems without any phase current sensor. In principle, two current sensors are essential parts of the drive system for implementation of the feedback to achieve high accuracy control. For this purpose, the double ESOs are created to provide feedback stator currents instead of actual current sensors. The first one of the double ESOs is designed to estimate the benchmark value of q-axis stator current, which is a primary premise; While the second is designed to estimate real-time stator currents of d-axis and q-axis simultaneously. The resultant double ESOs can rapidly and accurately give estimation of the actual currents of a-axis, b-axis and c-axis, and the synthesized double ESOs-based FOC strategy for PMSM drive system without any current sensors has satisfactory control performance and strong robustness. Numerical experiments validate the feasibility and effectiveness of the proposed scheme.
Key words： permanent magnet synchronous motor (PMSM) drive system; extended state observers (ESOs); current sensorless; field-oriented control (FOC)
CLD number： TM351 Document code： A
Article ID： 1674-8042（2019）02-0126-08 doi： 10.3969/j.issn.1674-8042.2019.02.004
References
［1］Chung D W, Sul S K. Analysis and compensation of current measurement error in vector-controlled AC motor drives. IEEE Transactions on Industry Applications, 2002, 34(2)： 340-345.
［2］Jeong Y S, Sul S K, Schulz S, et al. Fault detection and fault tolerant control of interior permanent magnet motor drive system for electric vehicle. IEEE Transactions on Industry Applications, 2005, 41(1)： 46-51.
［3］Boys J T. Novel current sensor for PWM AC drives. In： Proceedings of Electric Power Applications, 1988, 135(1)： 27-32.
［4］Ma H, Sun K, Wei Q, et al. Phase current reconstruction for AC motor adjustable-speed drives in the over-modulation method. Journal of Tsinghua University, 2010, 50(11)： 1757-1761.
［5］Salmasi F R, Najafabadi T A. An adaptive observer with online rotor and stator resistance estimation for induction motors with one phase current sensor. IEEE Transactions on Energy Conversion, 2011, 26(3)： 959-966.
［6］Teng Q F, Bai J Y, Zhu J G, et al. Current sensorless model predictive torque control based on adaptive backstepping observer for PMSM drives. WSEAS Transactions on Systems, 2014, 13： 187-202.
［7］Cui H W, Teng Q F, Zhu J G, et al. Simulation on model predictive control for PMSM drive system based on double extended state observer. Journal of Measurement Science and Instrumentation, 2018, 9(4)： 380-387.
［8］Teng Q F, Cui H W, Duan J Y, et al. Extented state observer-based vector control PMSM drive system with single phase current sensor. In： Proceedings of 20th International Conference on Electrical Machines and Systems (ICEMS), 2017： 1-6.
［9］Han J Q, Zhang R. Error analysis of the second order ESO. Journal of Systems Science and Mathematical Sciences, 1999, 19(4)： 465-471.
［10］Han J Q. Auto disturbances rejection control technique. Frontier Science, 2007, (1)： 24-31.
［11］Han J Q. From PID technique to active disturbance rejection control technique. Control Engineering of China, 2002, 9(3)： 13-18.
［12］Su Y X, Zheng C H, Duan B Y. Automatic disturbances rejection controller for precise motion control of permanent-magnet synchronous motors. IEEE Transactions on Industrial Electronics, 2005, 52(3)： 814-823.
基于双ESO无电流传感器的永磁同步电机驱动系统磁场定向控制
滕青芳1,2， 崔宏伟3， 田杰1
（1. 兰州交通大学 自动化与电气工程学院, 甘肃 兰州 730070； 2. 兰州交通大学 光电技术与智能控制教育部重点实验室, 甘肃 兰州 730070； 3. 中交第二公路勘察设计研究院有限公司， 湖北 武汉 430056）
摘要： 针对无任何相电流传感器的三相永磁同步电机（PMSM）驱动系统， 提出了一种新颖的基于双扩张状态观测器（ESO）无电流传感器的磁场定向控制（FOC）策略。 一般需要两个相电流传感器以进行电流反馈实现高精度控制， 为此创建了两个ESO来替代实际电流传感器。 第一个ESO用于提供q轴定子电流基准值； 考虑到定子电阻和电感变化， 第二个ESO用于估计实时d轴和q轴定子电流。 所创建的双ESO能够快速和精确地估计实际定子三相电流， 所设计的基于双ESO无电流传感器的FOC策略能够使PMSM驱动系统具有良好的控制性能和较强的鲁棒性。 仿真实验验证了所提方法的可行性和有效性。
关键词： PMSM驱动系统； 扩张状态观测器； 无电流传感器； 磁场定向控制
引用格式：TENG Qing-fang, CUI Hong-wei, TIAN Jie. Double ESOs-based field-oriented control for PMSM drive system with current sensorless. Journal of Measurement Science and Instrumentation, 2019, 10（2）： 126-133. ［doi： 10.3969／j.issn.1674-8042.2019.02.004］
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