Abstract:Aiming at the characteristics of open-winding permanent magnet synchronous motor (OW-PMSM) with common DC bus, such as abundant basic voltage vectors and the existence zero sequence circuit, this paper proposed an improved direct torque control strategy based on the reconstructed voltage vector for OW-PMSM with common DC bus. In order to make full use of the voltage vectors generated by OW-PMSM, 19 reconstructed voltage vectors were defined. And based on this, the zero-sequence current suppression method was improved to expand the range of candidate voltage vectors for direct torque control (DTC). According to the characteristics of reconstructed vectors, such as abundant numbers and different amplitudes, a five-bit torque hysteresis controller was introduced into DTC to suppress the torque ripple. Aiming at the problem of limited control precision of hysteresis controller, a new region division method was defined and the corresponding reconstructed voltage vector selection table was established. By locating the reference voltage vector, the reconstructed voltage vector could be selected accurately. The experimental results verify the feasibility and superiority of the proposed control strategy.
孙丹, 赵琛, 柯伟煌, 王铭泽, 年珩. 基于重构电压矢量的共直流母线型开绕组永磁同步电机改进直接转矩控制[J]. 电工技术学报, 2022, 37(7): 1644-1653.
Sun Dan, Zhao Chen, Ke Weihuang, Wang Mingze, Nian Heng. Reconstructed Voltage Vector Based Improved Direct Torque Control Strategy for Open-Winding Permanent Magnet Synchronous Motor with Common DC Bus. Transactions of China Electrotechnical Society, 2022, 37(7): 1644-1653.
[1] 李昱, 郭宏, 平朝春, 等. 基于电流源变流器的永磁同步电机驱动系统全状态变量预测转矩控制[J]. 电工技术学报, 2021, 36(1): 15-26. Li Yu, Guo Hong, Ping Zhaochun, et al.A full-state variable predictive torque control of current source converter fed permanent magnet synchronous motor drives[J]. Transactions of China Electrotechnical Society, 2021, 36(1): 15-26. [2] He Mingjie, Li Weiye, Peng Jun, et al.Multi-layer quasi three-dimensional equivalent model of axial-flux permanent magnet synchronous machine[J]. CES Transactions on Electrical Machines and Systems, 2021, 5(1): 3-12. [3] Cui Fengrui, Sun Zhaolong, Xu Wei, et al.Comparative analysis of bilateral permanent magnet linear synchronous motors with different structures[J]. CES Transactions on Electrical Machines and Systems, 2020, 4(2): 142-150. [4] 陈文汉, 孙丹, 王铭泽. 断相故障下开绕组永磁同步电机模型预测控制容错控制策略研究[J]. 电工技术学报, 2021, 36(1): 77-86. Chen Wenhan, Sun Dan, Wang Mingze.Research on fault-tolerance strategy based on model predictive control for open-winding PMSM system under open-phase fault[J]. Transactions of China Electrotechnical Society, 2021, 36(1): 77-86. [5] 张晓光, 闫康, 张文涵. 开绕组永磁同步电机混合双矢量模型预测控制[J]. 电工技术学报, 2021, 36(1): 96-106. Zhang Xiaoguang, Yan Kang, Zhang Wenhan.Hybrid double vector model predictive control for open-winding permanent magnet synchronous motor with common DC bus[J]. Transactions of China Electrotechnical Society, 2021, 36(1): 96-106. [6] 孙丹, 林斌, 周文志. 开绕组电机系统拓扑及控制技术研究综述[J]. 电工技术学报, 2017, 32(4): 76-84. Sun Dan, Lin Bin, Zhou Wenzhi.Overview of topology and control technology of open winding motor system[J]. Transactions of China Electrotechnical Society, 2017, 32(4): 76-84. [7] 林晓刚, 黄文新, 姜文, 等. 共母线开绕组永磁同步电机缺相容错型直接转矩控制[J]. 电工技术学报, 2020, 35(24): 5064-5074. Lin Xiaogang, Huang Wenxin, Jiang Wen, et al.Fault- tolerant direct torque control for open-end winding permanent magnet synchronous motor with common DC bus under open phase circuit[J]. Transactions of China Electrotechnical Society, 2020, 35(24): 5064-5074. [8] Lee Yongjae, Ha Jung-lk.Hybrid modulation of dual inverter for open-end permanent magnet synchronous motor[J]. IEEE Transactions on Power Electronics, 2015, 30(6): 3286-3299. [9] 年珩, 阮晨辉, 何峪嵩, 等. 基于Z源逆变器的共直流母线开绕组永磁同步电机系统控制策略[J]. 中国电机工程学报, 2019, 39(18): 5509-5519, 5599. Nian Heng, Ruan Chenhui, He Yusong, et al.Control strategy for open-winding PMSM system with common DC bus based on Z-source inverters[J]. Proceedings of the CSEE, 2019, 39(18): 5509-5519, 5599. [10] 杨帆, 金鑫, 沈煜, 等. 基于零序导纳变化的灵活接地系统接地故障方向判别算法[J]. 电力系统自动化, 2020, 44(17): 88-94. Yang Fan, Jin Xin, Shen Yu, et al.Ground fault direction discrimination algorithm for flexible grounding system based on zero sequence admittance change[J]. Automation of Electric Power Systems, 2020, 44(17): 88-94. [11] 韦明杰, 石访, 张恒旭, 等. 基于零序电流波形区间斜率曲线的配电网高祖接地故障检测[J]. 电力系统自动化, 2020, 44(14): 164-171. Wei Mingjie, Shi Fang, Zhang Hengxu, et al.High voltage grounding fault detection of distribution network based on zero sequence current waveform interval slope curve[J]. Automation of Electric Power Systems, 2020, 44(14): 164-171. [12] Nian Heng, Ruan Chenhui, He Yusong, et al.Control strategy for open-winding PMSM system with common DC bus based on Z-source inverters[J]. Proceedings of the CSEE, 2019, 39(18): 5509-5519, 5599. [13] 年珩, 曾恒力, 周义杰. 共直流母线开绕组永磁同步电机系统零序电流抑制策略[J]. 电工技术学报, 2015, 30(20): 40-48. Nian Heng, Zeng Hengli, Zhou Yijie.Zero sequence current suppression strategy for open winding permanent magnet synchronous motor with common DC bus[J]. Proceedings of the CSEE, 2015, 30(20): 40-48. [14] Sun Dan, Chen Wenhan, Cheng Yifei, et al.Improved direct torque control for open-winding PMSM system considering zero-sequence current suppression with low switching frequency[J]. IEEE Transactions on Power Electronics, 2021, 36(4): 4440-4451, 4647. [15] Yuan Xin, Zhang Shuo, Zhang Chengning, et al.Improved finite-state model predictive current control with zero-sequence current suppression for OEW-SPMSM drives[J]. IEEE Transactions on Power Electronics, 2020, 35(5): 4996-5006. [16] 陈浩, 和阳, 赵文祥, 等. 基于占空比调制的五相容错永磁游标电机直接转矩控制[J]. 电工技术学报, 2020, 35(5): 1055-1064. Chen Hao, He Yang, Zhao Wenxiang, et al.Direct torque control of five-phase fault-tolerant permanent magnet vernier motor based on duty cycle modulation[J]. Transactions of China Electrotechnical Society, 2020, 35(5): 1055-1064. [17] 张晓光, 张亮, 侯本帅. 永磁同步电机优化模型预测转矩控制[J]. 中国电机工程学报, 2017, 37(16): 4800-4809. Zhang Xiaoguang, Zhang Liang, Hou Benshuai.Improved model predictive torque control of permanent magnet synchronous motor[J]. Proceedings of the CSEE, 2017, 37(16): 4800-4809. [18] Wang Mingze, Sun Dan, Ke Weihuang, et al.A universal lookup table-based direct torque control for OW-PMSM drives[J]. IEEE Transactions on Power Electronics, 2021, 36(6): 6188-6191. [19] Lin Xiaogang, Huang Wenxin, Jiang Wen, et al.Direct torque control for three-phase open-end winding PMSM with common DC bus based on duty ratio modulation[J]. IEEE Transactions on Power Electronics, 2020, 35(4): 4216-4232. [20] Suresh Lakhimsetty, Venkata Siva Prasad Setelli, Rajjendra Singh Rathore, et al. Multilevel torque hysteresis-band based direct-torque control strategy for a three-level open-end winding induction motor drive for electric vehicle applications[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 7(3): 1969-1981. [21] Ravi Eswar Kodumur Meesala, Vinay Kumar Thippiripati. An improved direct torque control of three-level dual inverter fed open-ended winding induction motor drive based on modified look-up table[J]. IEEE Transactions on Power Electronics, 2020, 35(4): 3906-3917. [22] Wang Mingze, Sun Dan, Zheng Zhihao, et al.A novel lookup table based direct torque control for OW-PMSM drives[J]. IEEE Transactions on Industrial Electronics, DOI: 10.1109/TIE.2020. 3018067. [23] 范文进, 郑琼林, 杨中平, 等. 一种中高速区转矩优化的异步电机直接转矩控制算[J]. 中国电机工程学报, 2016, 36(1): 240-249. Fan Wenjin, Zheng Qionglin, Yang Zhongping, et al.A direct torque control algorithm of asynchronous motors with torque optimization in medium and high speed regions[J]. Proceedings of the CSEE, 2016, 36(1): 240-249. [24] Wang Zheng, Wang Xueqing, Cao Jiawei, et al.Direct torque control of T-NPC inverters-fed double-stator-winding PMSM drives with SVM[J]. IEEE Transactions on Power Electronics, 2018, 33(2): 1541-1553.