|
|
|
| Adaptive Harmonic Elimination for Model Predictive Direct Torque Control of Asynchronous Motor |
| Han Shuo1, Zhang Yongjun1,2, Xiao Xiong1,2, Liu Chenwei1, Guo Qiang1,2 |
1. National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing University of Science and Technology Beijing Beijing 102206 China;
2. Institute of Engineering Technology University of Science and Technology Beijing Beijing 102206 China |
|
|
|
Abstract With the rapid development of the economy and society, three-phase induction motors are widely used in aerospace, steel, electric power, and various industrial sectors due to their simple design, reliable performance, and cost-effectiveness. However, the operation of the asynchronous motor frequency drive system can generate harmonics, causing issues such as torque pulsation in generators, increased losses, and other challenges. These factors directly impact the efficiency and performance of the motor, sometimes resulting in failures in production processes or electromechanical systems. This paper proposes a model predictive direct torque control (AHE-MPDTC) method with an adaptive harmonic elimination strategy to ensure the system response speed based on the effective elimination of the 5th to 25th harmonics.
Firstly, a least mean square (LMS) adaptive algorithm is used to estimate the harmonic interference components while updating the weighting coefficients of cosine and sinusoidal signals online. Secondly, the adaptive algorithm is applied to the model predictive direct torque control (MPDTC) method to obtain the magnetic chain harmonic components and torque harmonic components to be filtered. Thirdly, multiple harmonics are eliminated by adding a single module, and the control system output is added to the output of the harmonic elimination module. All the harmonic voltage values that need to be eliminated are obtained and added to the system transfer function. Finally, the multiple AHE algorithm is embedded into the MPC, and the output current of the AC motor is transformed to obtain the MT axis. The sinusoidal and co-sinusoidal components of the frequencies that need to be eliminated are introduced into the MF_AHE and the 5th to 25th harmonic voltages are obtained. In addition, the optimal MT axis voltages in the model-predicted direct torque control generate the space vector pulse width modulation (SVPWM) reference voltage vector.
The experimental results verify the AHE-MPDTC method and the following conclusions can be drawn. (1) The dead time compensation strategy of the asynchronous motor drive system, the current harmonic suppression method of the harmonic extractor, and the electromagnetic torque pulsation suppression method of the motor with resonance digital filter are studied. The output stator current of the motor has a much lower THD under the AHE-MPDTC method. (2) Comparison between the AHE-MPDTC and MPDTC methods demonstrates that adding the AHE method does not affect the response speed of the motor's electromagnetic torque and stator magnetic chain. Additionally, the AHE-MPDTC strategy achieves a remarkable reduction of approximately 85.2% in motor torque pulsation and 60.0% in stator magnetic chain pulsation compared to the MPDTC strategy. (3) The AHE method does not compromise the system's response speed, and the AHE-MPDTC strategy improves system stability while maintaining excellent dynamic performance.
|
|
Received: 24 January 2024
|
|
|
|
|
|
[1] 杨凯, 李孺涵, 罗成, 等. 考虑参数误差的无速度传感器异步电机低速发电工况稳定性提升策略[J]. 电工技术学报, 2023, 38(21): 5738-5748, 5820.
Yang Kai, Li Ruhan, Luo Cheng, et al.Enhanced stability for speed-sensorless induction motor drives in low-speed regenerating region considering parameter uncertainties[J]. Transactions of China Electrotechnical Society, 2023, 38(21): 5738-5748, 5820.
[2] 冯婉, 张文娟, 苗轶如, 等. 基于dq坐标系下6次谐波抑制的车用感应电机低频共振削弱方法[J]. 电工技术学报, 2023, 38(24): 6632-6645.
Feng Wan, Zhang Wenjuan, Miao Yiru, et al.Low frequency resonance reduction method of induction motor used by electric vehicle based on sixth harmonic suppression in dq coordinate[J]. Transactions of China Electrotechnical Society, 2023, 38(24): 6632-6645.
[3] Kovács G.Harmonics in the squirrel cage induction motor analytic calculation part III: influence on the torque-speed characteristic[J]. CES Transactions on Electrical Machines and Systems, 2024, 8(1): 86-102.
[4] 焦宁, 刘天琪, 王顺亮, 等. 三相两电平逆变器死区效应谐波分析及其补偿方法研究[J]. 电网技术, 2020, 44(6): 2169-2176.
Jiao Ning, Liu Tianqi, Wang Shunliang, et al.Harmonic analysis and compensation method for dead-time effects in three-phase two-level inverters[J]. Power System Technology, 2020, 44(6): 2169-2176.
[5] 张志刚, 李腾, 杜劭琨, 等. 基于死区补偿的PMSM转矩脉动抑制研究[J]. 控制工程, 2021, 28(6): 1108-1114.
Zhang Zhigang, Li Teng, Du Shaokun, et al.Research on torque ripple suppression of PMSM based on dead-time compensation[J]. Control Engineering of China, 2021, 28(6): 1108-1114.
[6] 宁继超, 贲洪奇, 王雪松, 等. 带有死区时间补偿及电容电压平衡功能的二极管钳位型三电平逆变器数字调制方法[J]. 电工技术学报, 2024, 39(20): 6444-6461.
Ning Jichao, Ben Hongqi, Wang Xuesong, et al.A digital modulation method for dead-time compensation and capacitor voltage balance in diode clamped three-level inverters[J]. Transactions of China Electrotechnical Society, 2024, 39(20): 6444-6461.
[7] 周国祥, 王邦继, 王梦轩, 等. 高频伺服系统逆变器死区非线性补偿策略[J/OL]. 电工技术学报, https://doi.org/10.19595/j.cnki.1000-6753.tces.240687.
Zhou Guoxiang, Wang Bangji, Wang Mengxuan, et al. Dead-time nonlinearity compensation strategy for inverter in high frequency servo systems[J/OL]. Transactions of China Electrotechnical Society, https://doi.org/10.19595/j.cnki.1000-6753.tces.240687.
[8] Boby M, Arun Rahul S, Gopakumar K, et al.A low-order harmonic elimination scheme for induction motor drives using a multilevel octadecagonal space vector structure with a single DC source[J]. IEEE Transactions on Power Electronics, 2018, 33(3): 2430-2437.
[9] Zhang Jing, Wang Bo, Yu Yong, et al.Overmodulation harmonic modeling and suppression for induction motor field-weakening control with extended voltage tracking method[J]. IEEE Transactions on Industrial Electronics, 2023, 70(6): 5637-5650.
[10] Çelik D, Ahmed H, Meral M E.Kalman filter-based super-twisting sliding mode control of shunt active power filter for electric vehicle charging station applications[J]. IEEE Transactions on Power Delivery, 2023, 38(2): 1097-1107.
[11] Hasan K, Othman M M, Meraj S T, et al.Shunt active power filter based on savitzky-golay filter: pragmatic modelling and performance validation[J]. IEEE Transactions on Power Electronics, 2023, 38(7): 8838-8850.
[12] 陈少龙, 张兴, 郭梓暄, 等. 基于自适应虚拟阻抗的并网电流谐波抑制[J]. 电力电子技术, 2022, 56(2): 76-79.
Chen Shaolong, Zhang Xing, Guo Zixuan, et al.Harmonic suppression of grid-connected current based on adaptive virtual impedance[J]. Power Electronics, 2022, 56(2): 76-79.
[13] Jayaraman K, Kumar M.Design of passive commonmode attenuation methods for inverter-fed induction motor drive with reduced common-mode voltage PWM technique[J]. IEEE Transactions on Power Electronics, 2020, 35(3): 2861-2870.
[14] 张海洋, 许海平, 方程, 等. 基于谐振数字滤波器的直驱式永磁同步电机转矩脉动抑制方法[J]. 中国电机工程学报, 2018, 38(4): 1222-1231, 1299.
Zhang Haiyang, Xu Haiping, Fang Cheng, et al.Torque ripple suppression method of direct-drive permanent magnet synchronous motor based on resonant digital filter[J]. Proceedings of the CSEE, 2018, 38(4): 1222-1231, 1299.
[15] 朱元, 朱醴亭, 肖明康, 等. 基于几何约束优化的重复控制器及PMSM电流谐波抑制应用[J]. 电工技术学报, 2024, 39(4): 1059-1073.
Zhu Yuan, Zhu Liting, Xiao Mingkang, et al.Repetitive controller based on geometric constraint optimization and its application to current harmonic suppression of PMSM[J]. Transactions of China Electrotechnical Society, 2024, 39(4): 1059-1073.
[16] Zhao Fangzhou, Xiao Guochun, Zhu Tianhua, et al.Harmonic analysis and suppression method of output current distortion for medium-voltage motor drives with modular multilevel converter[J]. IEEE Transactions on Power Electronics, 2020, 35(1): 744-759.
[17] Wang Lu, Zhu Z Q, Bin Hong, et al.Current harmonics suppression strategy for PMSM with nonsinusoidal back-EMF based on adaptive linear neuron method[J]. IEEE Transactions on Industrial Electronics, 2020, 67(11): 9164-9173.
[18] Ali Qasem Mohammed S, Hakami S S, Lee K B. Improved iterative learning control for three-level NPC inverter-fed PMSM drives with DC-link balancing[J]. IEEE Transactions on Industrial Informatics, 2024, 20(8): 10554-10564.
[19] 金石, 朱熙, 金无痕, 等. 基于谐波提取器的永磁同步电机谐波抑制方法[J]. 电气工程学报, 2021, 16(1): 9-15.
Jin Shi, Zhu Xi, Jin Wuhen, et al.Harmonic suppression method of permanent magnet synchronous motor based on harmonic extractor[J]. Journal of Electrical Engineering, 2021, 16(1): 9-15.
[20] 宋健, 宋文祥, 张钦清. 直流母线小电容永磁同步电机驱动系统网侧电流谐波抑制策略[J]. 电工技术学报, 2024, 39(18): 5668-5679.
Song Jian, Song Wenxiang, Zhang Qinqing.Harmonic suppression strategy of grid side current for DC-link small capacitor permanent magnet synchronous motor drive system[J]. Transactions of China Electrotechnical Society, 2024, 39(18): 5668-5679.
[21] 王晓寰, 庆宏阳, 刘聪哲, 等. 微电网孤岛运行模式下谐波电流抑制研究[J]. 太阳能学报, 2020, 41(3): 167-176.
Wang Xiaohuan, Qing Hongyang, Liu Congzhe, et al.Research on harmonic current suppression in islanded mode of microgrid[J]. Acta Energiae Solaris Sinica, 2020, 41(3): 167-176.
[22] Zhang Zhaoyang, Ge Xinglai, Tian Zisi, et al.A PWM for minimum current harmonic distortion in metro traction PMSM with saliency ratio and load angle constrains[J]. IEEE Transactions on Power Electronics, 2018, 33(5): 4498-4511.
[23] Astrom K J, Wittenmark B.Adaptive control[M]. 2nd ed. Mineol: Courier Dover Publications, 2008. |
|
|
|
2025, Vol. 40 
