Considering the problem that current locus cannot be planned in voltage angle control methods, the single q-axis current regulator - variable voltage angle control method is proposed. Firstly, the relationship of different limit curves and the movements of the current locus were analyzed based on the fundamental electromagnetic relationship of the dq axis current plane. The optimal current loci were designed for the corresponding torque characteristic curves. Secondly, the unique regulated variable was analyzed with the limitation of the maximum voltage amplitude; the single q-axis current regulator was proposed to implement the current locus control in the flux-weakening region; the stability was also proved. Finally, the simulation and experiment platforms based on a 3kW permanent magnet synchronous motor were set up. Compared with traditional flux-weakening control methods, the results show that the proposed method can complete smooth transition of flux-weakening control, simplify the motoring and generating algorithm, and ensure system stability, which achieves good control of current response and current locus.
张梓绥, 王琛琛, 游小杰, 周明磊, 王彬. 基于单Q轴电流调节器的永磁同步电机电流轨迹控制[J]. 电工技术学报, 2018, 33(24): 5779-5788.
Zhang Zisui, Wang Chenchen, You Xiaojie, Zhou Minglei, Wang Bin. Current Locus Control of Permanent Magnet Synchronous Motor Based on Single Q-Axis Current Regulator Flux-Weakening Method. Transactions of China Electrotechnical Society, 2018, 33(24): 5779-5788.
[1] Dück P, Ponick B.A novel iron-loss-model for permanent magnet synchronous machines in traction applications[C]//International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference, Toulouse, France, 2016, 2: 1-6.
[2] 高雅, 刘卫国, 骆光照. 牵引机车用永磁同步电机断电-重投控制系统研究[J]. 电工技术学报, 2016, 31(6): 100-107, 117.Gao Ya, Liu Weiguo, Luo Guangzhao. Research of power down-rejoining on control system for permanent magnet synchronous motor used in traction engines[J]. Transactions of China Electro- technical Society, 2016, 31(6): 100-107, 117.
[3] Morimoto S, Sanada M, Takeda Y, et al.Effects and compensation of magnetic saturation in flux- weakening controlled permanent magnet synchronous motor drives[J]. IEEE Transactions on Industry Applications, 1994, 30(6): 1632-1638.
[4] Lenke R U, De Doncker R W, Mu-Shin Kwak, et al. Field weakening control of interior permanent magnet machine using improved current interpolation technique[C]//37th IEEE Power Electronics Specialists Conference, Jeju, South Korea, 2006, 2: 1-5.
[5] Young-Doo Y, Seung-Ki S.New flux weakening control for surface mounted permanent magnet synchronous machine using gradient descent method[C]// International Conference of Power Electronics, Daegu, South Korea, 2007, 2: 1208-1212.
[6] Jang-Mok K, Seung-Ki S.Speed control of interior permanent magnet synchronous motor drive for the flux weakening operation[J]. IEEE Transactions on Industry Applications, 1997, 33(1): 43-48.
[7] Maric D S, Hiti S, Stancu C C, et al.Two improved flux weakening schemes for surface mounted permanent magnet synchronous machine drives employing space vector modulation[C]//Industrial Electronics Society Annual Conference of the IEEE, Aachen, Germany, 1998, 1: 508-512.
[8] Kwon Y C, Kim S, Sul S K, et al.Six-step operation of pmsm with instantaneous current controll[J]. IEEE Transactions on Industry Applications, 2014, 50(4): 2614-2625.
[9] 康劲松, 崔宇航, 王硕. 基于电流快速响应的永磁同步电机六拍运行控制策略[J]. 电工技术学报, 2016, 31(1): 165-174. Kang Jinsong, Cui Yuhang, Wang Shuo. The current rapid response control strategy for the six-step operation of permanent magnet synchronous motors[J]. Transactions of China Electrotechnical Society, 2016, 31(1): 165-174.
[10] Miyajima T, Fujimoto H, Fujitsuna, et al. A precise model-based design of voltage phase controller for IPMSM[J]. IEEE Transactions on Power Electronics, 2013, 28(12): 5655-5664.
[11] Zhu L, Wen X, Zhao F, et al.Deep field-weakening control of PMSMS for both motion and generation operation[C]//2011 International Conference on Electrical Machines and System, Beijing, China, 2011, 2: 1-5.
[12] Stojan D, Drevensek D, Plantic Z, et al.Novel field-weakening control scheme for permanent- magnet synchronous machines based on voltage angle control[J]. IEEE Transactions on Industry Appli- cations, 2012, 48(6): 2390-2401.
[13] Jung S, Ha J I.Low voltage modulation method in six-step operation of three phase inverter[C]// International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, South Korea, 2015, 2: 605-610.
[14] 方晓春, 胡太元, 林飞, 等. 基于交直轴电流耦合的单电流调节器永磁同步电机弱磁控制[J]. 电工技术学报, 2015, 30(2): 140-147. Fang Xiaochun, Hu Taiyuan, Lin Fei, et al. Single current regulator flux-weakening control of PMSM based on the D-Q current cross-coupling effect[J]. Transactions of China Electrotechnical Society, 2015, 30(2): 140-147.
[15] Park J, Jung S, Ha J I, e al. Variable time step control for six-step operation in surface-mounted permanent magnet machine drives[J]. IEEE Transactions on Power Electronics, 2018, 33(2): 1501-1513.
[16] 李珂, 顾欣, 刘旭东, 等. 基于梯度下降法的永磁同步电机单电流弱磁优化控制[J]. 电工技术学报, 2016, 31(15): 8-15.Li Ke, Gu Xin, Liu Xudong, et al. Optimized flux weakening control of IPMSM based on gradient descent method with single current regulator[J]. Transactions of China Electrotechnical Society, 2016, 31(15): 8-15.
[17] 林伟. 电动车用永磁同步电机弱磁调速控制策略研究[D]. 大连: 大连理工大学, 2016.
[18] 吴斌. 永磁同步电机调速系统弱磁控制方法研究[D]. 南京: 东南大学, 2016.
2018, Vol. 33 
