Abstract：Conventional model predictive control (MPC) predicts the stator current based on the current sampling and mathematical model of motor, which requires seven times of prediction to obtain the best voltage vector minimizing the current errors for two-level inverter. The main disadvantages are dependence on system model and machine parameters and high computational burden. By analyzing the predictive model of stator current for permanent magnet synchronous motor (PMSM), a fast predictive current control (FPCC) requiring only one prediction and comparison is obtained. After further simplification on FPCC, this paper proposes a model-free PCC (MFPCC), which only requires single current sampling during one control period. This method has low computational burden, strong robustness, good steady state performance and quick response. A comparative study between FPCC and MFPCC is carried out in terms of parameter sensitivity, steady state performance and dynamic response. The simulation and experimental results confirm the effectiveness of the proposed methods.
张虎, 张永昌, 刘家利, 高素雨. 基于单次电流采样的永磁同步电机无模型预测电流控制[J]. 电工技术学报, 2017, 32(2): 180-187.
Zhang Hu, Zhang Yongchang, Liu Jiali, Gao Suyu. Model-Free Predictive Current Control of Permanent Magnet Synchronous Motor Based on Single Current Sampling. Transactions of China Electrotechnical Society, 2017, 32(2): 180-187.
[1] 夏长亮,阎彦. 矩阵变换器-永磁同步电机系统[J]. 电工技术学报, 2015, 30(23): 1-9. Xia Changliang, Yan Yan. Matrix converter- permanent magnet synchronous motor drives[J]. Transactions of China Electrotechnical Society, 2015, 30(23): 1-9. [2] Zhang Yongchang, Zhu Jianguo. Direct torque control of permanent magnet synchronous motor with reduced torque ripple and commutation frequency[J]. IEEE Transactions on Power Electronics, 2011, 26(1): 235- 248. [3] Zhang Yongchang, Zhu Jianguo, Xu Wei, et al. A simple method to reduce torque ripple in direct torque-controlled permanent-magnet synchronous motor by using vectors with variable amplitude and angle[J]. IEEE Transactions on Industrial Electronics, 2011, 58(7): 2848-2859. [4] Zhang Yongchang, Zhu Jianguo. A novel duty cycle control strategy to reduce both torque and flux ripples for DTC of permanent magnet synchronous motor drives with switching frequency reduction[J]. IEEE Transactions on Power Electronics, 2011, 26(10): 3055-3067. [5] Foo G, Rahman M F. Direct torque control of an IPM- synchronous motor drive at very low speed using a sliding-mode stator flux observer[J]. IEEE Transa- ctions on Power Electronics, 2010, 25(4): 933-942. [6] 张永昌, 杨海涛. 异步电机无速度传感器模型预测控制[J]. 中国电机工程学报, 2014, 34(15): 2422- 2429. Zhang Yongchang, Yang Haitao. Model predictive control for speed sensorless induction motor drive[J]. Proceedings of the CSEE, 2014, 34(15): 2422-2429. [7] 张虎, 张永昌, 杨达维. 基于双矢量模型预测直接功率控制的双馈电机并网及发电[J]. 电工技术学报, 2016, 31(5): 69-76. Zhang Hu, Zhang Yongchang, Yang Dawei. Two- vectors-based model predictive direct power control of doubly fed induction generator for grid connection and power regulation. Transactions of China Electro- technical Society, 2016, 31(5): 69-76. [8] 张永昌, 杨海涛, 魏香龙. 基于快速矢量选择的永磁同步电机模型预测控制[J]. 电工技术学报, 2016, 31(6): 66-73. Zhang Yongchang, Yang Haitao, Wei Xianglong. Model predictive control of permanent magnet synchronous motors based on fast vector selection[J]. Transactions of China Electrotechnical Society, 2016, 31(6): 66-73. [9] Wang Tianshi, Zhu Jianguo, Zhang Yongchang. Model predictive torque control for PMSM with duty ratio optimization[C]//Electrical Machine and Systems (ICEMS), 2011: 1-5. [10] Zhang Yongchang, Yang Haitao. Model predictive torque control of induction motor drives with optimal duty cycle control[J]. IEEE Transactions on Power Electronics, 2014, 29(12): 6593-6603. [11] Xia Changliang, Liu Tao, Shi Tingna, et al. A simplified finite-control-set model-predictive control for power converters[J]. IEEE Transactions on Indu- strial Informatics, 2014, 10(2): 991-1002. [12] Morel F, Linshi X, Retif J M, et al. A comparative study of predictive current control schemes for a permanent magnet synchronous machine drive[J]. IEEE Transactions on Industrial Electronics, 2009, 56(7): 2715-2728. [13] Cortes P, Rodriguez J, Silva C, et al. Delay com- pensation in model predictive current control of a three-phase inverter[J]. IEEE Transactions on Indu- strial Electronics, 2012, 59(2): 1323-1325. [14] Nemec M, Drobnic K, Nedeljkovic D, et al. Direct current control of a synchronous machine in field coordinates[J]. IEEE Transactions on Industrial Electronics, 2009, 56(10): 4052-4061. [15] Lin Chengkai, Liu Tianhua, Yu Jente, et al. Model- free predictive current control for interior permanent magnet synchronous motor drives based on current difference detection technique[J]. IEEE Transactions on Industrial Electronics, 2014, 61(2): 667-681.
2017, Vol. 32 
