Shen Yongpeng1, Wang Qiancheng1, Wang Yanfeng1, Yuan Xiaofang2, Li Hailin1
1. College of Electrical and Information Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China; 2. College of Electrical and Information Engineering Hunan University Changsha 410000 China
Abstract:The phase current reconstruction of a single current sensor based on the traditional space vector pulse width modulation method has an unobservable area and cannot realize the zero-point drift correction. Therefore, an error self-correcting mixed pulse width modulation method is proposed. Two complementary effective voltage space vectors are inserted in each carrier cycle of the unobservable area to replace the zero-voltage vector, which provides a reliable sampling window for the current sensor and eliminates the current unobservable area. At the same time, through the dynamic double sampling of the complementary effective voltage vector, the self-detection and self-correction of the current zero drift are realized. Under the experimental conditions, the proposed method recon- struction phase current error is less than 3.57%, and the total harmonic distortion of the phase current is less than 4.02%, which can provide a reliable reconstruction phase current for the control system.
[1] 黄科元, 周佳新, 刘思美, 等. 考虑逆变器非线性永磁同步电机高频注入电感辨识方法[J]. 电工技术学报, 2021, 36(8): 1607-1616. Huang Keyuan, Zhou Jiaxin, Liu Simei, et al.Indu-ctance identification method of permanent magnet synchronous motor considering inverter nonlinearity based on high-frequency injection[J]. Transactions of China Electrotechnical Society, 2021, 36(8): 1607-1616. [2] 陈勇, 张建建, 陈章勇. 基于电流观测器的三相逆变电路开路故障在线诊断[J]. 电工技术学报, 2019, 34(增刊2): 609-617. Chen Yong, Zhang Jianjian, Chen Zhangyong.A current observer based on-line open-fault diagnosis for three-phase inverter[J]. Transactions of China Electrotechnical Society, 2019, 34(S2): 609-617. [3] 申永鹏, 郑竹风, 杨小亮, 等. 直流母线电流采样电压空间矢量脉冲宽度调制[J]. 电工技术学报, 2021, 36(8): 1617-1627. Shen Yongpeng, Zheng Zhufeng, Yang Xiaoliang, et al.A compatible SVPWM method for DC bus current sampling[J]. Transactions of China Electrotechnical Society, 2021, 36(8): 1617-1627. [4] 李国华, 陈钰, 汪玉凤. 三相逆变器随机空间矢量脉宽调制选择性电压谐波消除方法[J]. 电工技术学报, 2020, 35(14): 3041-3049. Li Guohua, Chen Yu, Wang Yufeng.Selective voltage harmonic elimination in random space vector pulse width modulation for three-phase inverter[J]. Transa-ctions of China Electrotechnical Society, 2020, 35(14): 3041-3049. [5] 陈超, 陈振, 赵静, 等. 基于五相电流源型逆变器的一种新型PMSM就近空间矢量容错组合策略[J]. 电工技术学报, 2020, 35(增刊2): 404-412. Chen Chao, Chen Zhen, Zhao Jing, et al.A novel PMSM near space vector fault tolerant combination strategy based on five-phase current source inverter[J]. Transactions of China Electrotechnical Society, 2020, 35(S2): 404-412. [6] 王文圣, 李珊瑚, 刘旭, 等. 一种基于输入电流矢量相位的新型间接矩阵变换器空间矢量过调制策略[J]. 电气技术, 2020, 21(3): 1-10. Wang Wensheng, Li Shanhu, Liu Xu, et al.A novel space vector overmodulation strategy based on input current vector phase for indirect matrix converter[J]. Electrical Engineering, 2020, 21(3): 1-10. [7] Zhang Zeliang, Luo Guangzhao, Zhang Zhengbin, et al.A hybrid diagnosis method for inverter open-circuit faults in PMSM drives[J]. CES Transactions on Electrical Machines and Systems, 2020, 4(3): 180-189. [8] 赵仕策, 赵洪山, 寿佩瑶. 智能电力设备关键技术及运维探讨[J]. 电力系统自动化, 2020, 44(20): 1-10. Zhao Shice, Zhao Hongshan, Shou Peiyao.Discussion on key technology and operation & maintenance of intelligent power equipment[J]. Automation of Elec-tric Power Systems, 2020, 44(20): 1-10. [9] 朱大朋, 苏建徽, 汪海宁, 等. 光伏发电双分裂变压器分布电容对逆变器直流电压的影响[J]. 电力系统自动化, 2020, 44(14): 141-147. Zhu Dapeng, Su Jianhui, Wang Haining, et al.Influ-ence of distributed capacitance of photovoltaic double-split transformer on DC voltage of inverter[J]. Automation of Electric Power Systems, 2020, 44(14): 141-147. [10] Lu Haifeng, Cheng Xiaomeng, Qu Wenlong, et al.A three-phase current reconstruction technique using single DC current sensor based on TSPWM[J]. IEEE Transactions on Power Electronics, 2014, 29(3): 1542-1550. [11] Lee W C, Lee T K, Hyun D S.Comparison of single-sensor current control in the DC link for three-phase voltage-source PWM converters[J]. IEEE Transactions on Industrial Electronics, 2001, 48(3): 491-505. [12] Saritha B, Janakiraman P A.Sinusoidal three-phase current reconstruction and control using a DC-link current sensor and a curve-fitting observer[J]. IEEE Transactions on Industrial Electronics, 2007, 54(5): 2657-2664. [13] Kim H, Jahns T M.Phase current reconstruction for AC motor drives using a DC link single current sensor and measurement voltage vectors[J]. IEEE Transa-ctions on Power Electronics, 2006, 21(5): 1413-1419. [14] Kim H, Jahns T M.Current control for AC motor drives using a single DC-link current sensor and measurement voltage vectors[J]. IEEE Transactions on Industry Applications, 2006, 42(6): 1539-1547. [15] 马鸿雁, 孙凯, 魏庆, 等. 变频调速系统过调制时的相电流重构方法[J]. 清华大学学报(自然科学版), 2010, 50(11): 1757-1761. Ma Hongyan, Sun Kai, Wei Qing, et al.Phase current reconstruction for AC motor adjustable-speed drives in the over-modulation method[J]. Journal of Tsinghua University (Science and Technology), 2010, 50(11): 1757-1761. [16] 马鸿雁, 孙凯, 魏庆, 等. PWM逆变器相电流重构研究与误差分析[J]. 电工技术学报, 2011, 26(1): 108-114, 161. Ma Hongyan, Sun Kai, Wei Qing, et al.Phase current reconstruction method for PWM inverter and error analysis[J]. Transactions of China Electrotechnical Society, 2011, 26(1): 108-114, 161. [17] Gu Yikun, Ni Fenglei, Yang Dapeng, et al.Switching-state phase shift method for three-phase-current reconstruction with a single DC-link current sensor[J]. IEEE Transactions on Industrial Electronics, 2011, 58(11): 5186-5194. [18] Dusmez S, Qin Ling, Akin B.A new SVPWM technique for DC negative rail current sensing at low speeds[J]. IEEE Transactions on Industrial Electro-nics, 2015, 62(2): 826-831. [19] Cho Y, LaBella T, Lai J S. A three-phase current reconstruction strategy with online current offset compensation using a single current sensor[J]. IEEE Transactions on Industrial Electronics, 2012, 59(7): 2924-2933. [20] 顾义坤, 倪风雷, 杨大鹏, 等. 基于母线电流传感器的相电流重构方法[J]. 电机与控制学报, 2009, 13(6): 811-816. Gu Yikun, Ni Fenglei, Yang Dapeng, et al.Novel method for phase current reconstruction using a single DC-Link current sensor[J]. Electric Machines and Control, 2009, 13(6): 811-816. [21] Xu Yongxiang, Yan Hao, Zou Jibin, et al.Zero voltage vector sampling method for PMSM three-phase current reconstruction using single current sensor[J]. IEEE Transactions on Power Electronics, 2017, 32(5): 3797-3807. [22] Yan Hao, Xu Yongxiang, Zou Jibin, et al.A novel open-circuit fault diagnosis method for voltage source inverters with a single current sensor[J]. IEEE Transactions on Power Electronics, 2018, 33(10): 8775-8786. [23] Tang Qipeng, Shen Anwen, Li Wuhua, et al.Multiple-positions-coupled sampling method for PMSM three-phase current reconstruction with a single current sensor[J]. IEEE Transactions on Power Electronics, 2020, 35(1): 699-708. [24] Metidji B, Taib N, Baghli L, et al.Phase current reconstruction using a single current sensor of three-phase AC motors fed by SVM-controlled direct matrix converters[J]. IEEE Transactions on Industrial Electronics, 2013, 60(12): 5497-5505. [25] Shen Yongpeng, Zheng Zhufeng, Wang Qiancheng, et al.DC bus current sensed space vector pulsewidth modulation for three-phase inverter[J]. IEEE Transa-ctions on Transportation Electrification, 2021, 7(2): 815-824.