感应电机低采样频率的磁链观测器离散化模型研究

doi:10.19595/j.cnki.1000-6753.tces.180416

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摘要针对在高速运行区域感应电机全阶磁链观测器的一阶欧拉离散化模型的不稳定问题,该文提出一种基于不同参考坐标系下的改进磁链观测器离散化模型。以定子磁链和转子磁链为状态变量,根据电机静止坐标系下的定子方程与转子坐标系下的转子方程,利用离散化状态矩阵对方程进行转换处理,并设计反馈矩阵进行观测器极点配置,从而实现电机磁链状态的稳定观测。改进磁链观测器离散化模型的极点轨迹位于稳定区域内,全速度区域内的模型稳定。最后,通过系统仿真与实验,验证了改进磁链观测器离散化模型的正确性和有效性。

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	李杰
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关键词 ：感应电机, 磁链观测器, 低采样频率, 离散化模型, 极点

Abstract：Aiming at the limitations of themodelof the Full-order observer using first-order Euler withfull speed range, that is, the discretizationmodel is unstable when operating at high speed, an improved discrete observer model based on different reference frame is proposed. The model is based on the rotor equation in the rotor reference frame,with the stator equation in the stationary reference frame.Considering the stator flux and rotor flux as the state variable, a discretized state matrix is used to convert the equations by designing the feedback matrix for pole placement, thus the stable observation of flux can be realized. The stability of theimproved discrete observation model can be proved by the stability theory of discrete domain. The root locus plot of the model is in the stable region to achievestability within the whole-speed range. Finally, both the simulation and experiment results demonstrate thecorrectnessandeffectivenessof theproposedmethod.

Key words： Induction motor flux observer low sampling frequency model discretization poles

收稿日期: 2018-03-27 出版日期: 2019-08-13

PACS:

TM343

基金资助:国家自然科学基金资助项目（51377102）

通讯作者: 宋文祥，男，1973年生，博士，教授，博士生导师，研究方向为新型电力电子变换、电机驱动控制及应用。Email：wxsong@shu.edu.cn

作者简介: 李杰,男,1973年生,博士,讲师,访问学者,研究方向为电机驱动与功率变换。Email：lijie@sou.edu.cn, 通信作者：宋文祥,男,1973年生,博士,教授,博士生导师,研究方向为新型电力电子变换、电机驱动控制及应用。Email：wxsong@shu.edu.cn

引用本文:

李杰, 詹榕, 宋文祥. 感应电机低采样频率的磁链观测器离散化模型研究[J]. 电工技术学报, 2019, 34(15): 3136-3146. Li Jie, Zhan Rong, Song Wenxiang. Improved Discrete Observer Model of Induction Motor at Low Sampling Frequency. Transactions of China Electrotechnical Society, 2019, 34(15): 3136-3146.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180416 https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I15/3136

[1] Holtz J, Oikonomou N.Fast dynamic control of medium voltage drives operating at very low switching frequency-an overview[J]. IEEE Transactions on Industrial Electronics, 2008, 55(3): 1005-1013.
[2] 罗慧. 感应电机全阶磁链观测器和转速估算方法研究[D]. 武汉: 华中科技大学, 2009.
[3] 杨文强, 贾正春. 异步电机转子磁链观测器的准确度分析与设计[J]. 华中科技大学学报(自然科学版), 2001, 29(2): 11-13.
Yang Wenqiang, Jia Zhengchun.The accuracy evaluation and design for rotor flux observers of induction motor[J]. Journal of Huazhong University of Science and Technology (Natural Science Edition), 2001, 29(2): 11-13.
[4] Kubota H, Matsuse K, Nakano T.DSP-based speed adaptive flux observer of induction motor[J]. IEEE Transactions on Industry Applications, 1993, 29(2): 344-348.
[5] 吴晓新, 宋文祥, 乐胜康, 等. 异步电机模型预测三电平直接电流控制[J]. 电工技术学报, 2017, 32(18): 113-123.
Wu Xiaoxin, Song Wenxiang, Le Shengkang, et al.Model predictive direct current control of induction machines fed by a three level inverter[J]. Transactions of China Electrotechnical Society, 2017, 32(18): 113-123.
[6] 陆文斌, 姚文熙, 吕征宇. 基于改进闭环磁链观测器的感应电机无速度矢量控制[J]. 电工技术学报, 2013, 28(3): 148-153.
Lu Wenbin, Yao Wenxi, Lü Zhengyu.Speed sensorless vector control with improved closed-loop flux observer for induction machines[J]. Transactions of China Electrotechnical Society, 2013, 28(3): 148-153.
[7] 邓歆, 张广明, 王德明, 等. 异步电机全阶磁链观测器反馈矩阵设计[J]. 电机与控制学报, 2015, 19(12): 7-17.
Deng Xin, Zhang Guangming, Wang Deming, et al.Feedback matrix design of full order flux observer for induction motor[J]. Electric Machines and Control, 2015, 19(12): 7-17.
[8] 韦文祥, 刘国荣. 基于扩展状态观测器模型与定子电阻自适应的磁链观测器及其无速度传感器应用[J]. 中国电机工程学报,2015,35(23):6194-6202.
Wei Wenxiang, Liu Guorong.Sensorless control with flux observer based on parallel stator resistance adaptation and extended state observer model[J]. Proceedings of the CSEE,2015, 35(23): 6194-6202.
[9] 杨淑英, 丁大尉, 李曦, 等. 基于新型转子磁链观测器的异步电机转矩闭环矢量控制[J]. 中国电机工程学报, 2017, 37(11): 3298-3306.
Yang Shuying, Ding Dawei, Li Xi, et al.A novel rotor-flux observer based closed-loop control on induction motor torque with vector orientation[J]. Proceedings of the CSEE, 2017, 37(11): 3298-3306.
[10] 曹永岩. 现代控制理论的工程应用[M]. 杭州:浙江大学出版社, 2000.
[11] 吴文进, 苏建徽, 刘鹏, 等. 感应电机全阶磁链观测器设计及其控制性能对比分析[J]. 电机与控制学报, 2016, 20(4): 78-83.
Wu Wenjin, Su Jianhui, Liu Peng, et al.Design of full-order flux observer and comparision analysis for its control performance[J]. Electric Machines and Control, 2016, 20(4): 78-83.
[12] Wang Bo, Yu Yong, Sun Wei, et al.A modified discretization method for discrete full-order flux observer of induction motor[C]//2015 17th European Conference on Power Electronics and Applications, Geneva, Switzerland, 2015: 1-6.
[13] 赵雷廷, 刁利军, 董侃, 等. 基于状态空间拆分重组的牵引异步电机闭环离散全阶转子磁链观测器[J]. 电工技术学报, 2013, 28(10): 103-112.
Zhao Leiting, Diao Lijun, Dong Kan, et al.A novel discretized closed-loop full-order rotor flux observer for induction motor based on re-organization of state space[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 103-112.
[14] 凌光, 王斯然, 陈斌, 等. 感应电机全阶观测器的一种新型离散方法[J]. 电力电子技术, 2012, 46(4): 78-81.
Ling Guang, Wang Siran, Chen Bin, et al.A new discretization method of full-order observer for induction motor[J]. Power Electronics, 2012, 46(4): 78-81.
[15] Verghese G C, Sanders S R.Observers for flux estimation in induction machines[J]. IEEE Transactions on Industrial Electronics, 1988, 35(1): 85-94.
[16] Bottura C P, Silvino J L, De Resende P.A flux observer for induction machines based on a time-variant discrete model[J]. IEEE Transactions on Industry Applications, 1993, 29(2): 349-354.
[17] Luo Hui, Luo Tao, Wan Shuyun.Implementation of full-order flux observer for speed sensorless drives of induction motor at high speeds[C]//2008 International Conference on Electrical Machines and Systems, Wuhan, China, 2008: 1638-1640.
[18] Po-Ngam S, Sangwongwanich S.Stability and dynamic performance improvement of adaptive full-order observers for sensorless PMSM drive[J]. IEEE Transactions on Power Electronics, 2012, 27(2): 588-600.
[19] Griva G, Profumo F, Rosell L, et al.Optimization of fuzzy-like Luenberger observer for high speed sensorless induction motor drives using genetic algorithms[C]// Conference Record of the 2000 IEEE Industry Applications Conference, Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy, Rome, Italy, 2000, 2: 1268-1274.
[20] Hargens C W.Transient analysis of alternating current machinery[M]. New York: Chapman & Hill, 1954.
[21] Holtz J.Representation of AC machine dynamics by complex signal flow graphs[J]. IEEE Transactions on Industrial Electronics, 1995, 42(3): 263-271.
[22] Diao L J, Sun D N, Dong K, et al.Optimized design of discrete traction induction motor model at low-switching frequency[J]. IEEE Transactions on Power Electronics, 2013, 28(10): 4803-4810.
[23] Böcker J.Discrete-time model of an induction motor[J]. European Transactions on Electrical Power, 2013, 1(2): 65-71.
[24] 李培芳, 孙晖, 李江. 信号与系统分析基础[M]. 北京:清华大学出版社, 2006.