电工技术学报  2022, Vol. 37 Issue (10): 2469-2480    DOI: 10.19595/j.cnki.1000-6753.tces.201421
电机及其系统 |
超高速永磁电机驱动系统电流环稳定性分析与改进设计
鲍旭聪, 王晓琳, 顾聪, 石滕瑞
南京航空航天大学自动化学院 南京 211106
Stability Analysis and Improvement Design of Current Loop of Ultra-High-Speed Permanent Magnet Motor Drive System
Bao Xucong, Wang Xiaolin, Gu Cong, Shi Tengrui
School of Automation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China
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摘要 超高速永磁电机驱动系统在超高基频运行条件下,延迟会严重影响系统稳定性。该文对电流环动态模型进行精确重构,并系统分析高基频运行条件下延迟引入的交叉耦合与时延效应对系统稳定性的影响。在此基础上,提出一种适用于超高速电机的基于双采样电流预测的阻尼-积分型电流环调节机制,通过对系统阻尼比进行补偿,消除附加交叉耦合影响。此外,该文还设计一种分段执行式的双采样电流预测算法,可在不依赖任何参数的情况下实现下一拍反馈电流预测,有效补偿系统稳定裕度。以上两个措施为确保超高基频系统全局稳定提供有力保障。最后,在一台550 000r/min/110W超高速实验样机平台上,对所提改进型电流环调节机制进行充分仿真与实验分析,有效验证了所提方案的有效性与优越性。
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关键词 超高速电机稳定性控制延迟采样延迟阻尼比稳定裕度    
Abstract:The delay of the drive system of ultra-high speed permanent magnet motor will seriously affect the stability of the system under the operating condition of ultra-high fundamental frequency. In this paper, the dynamic model of the current loop is accurately reconstructed, and the influence of cross-coupling and delay effect on the system stability is systematically analyzed under high fundamental frequency operating conditions. Accordingly, a damp-integral current loop regulation mechanism is proposed for ultra-high-speed motors based on double sampling current prediction. By compensating the damping ratio of the system, the additional cross-coupling effect is eliminated. In addition, a two-sampling current prediction algorithm with piecewise execution is designed, which can realize the prediction of the next beat feedback current without relying on any parameters and effectively compensate the system stability margin. The above two measures provide a strong guarantee for the global stability of ultra-high fundamental frequency system. Finally, a 550 000r/min/110W ultra-high-speed experimental prototype platform was used to fully simulate and analyze the proposed improved current loop regulation mechanism, which verified the effectiveness and superiority of the proposed scheme.
Key wordsUltra-high-speed motor    stability    control delay    sample delay    damping-ratio    stability margin   
收稿日期: 2020-10-26     
PACS: TM351  
基金资助:国家自然科学基金(5217070613)、江苏省自然科学基金(BK20201297)资助项目
通讯作者: 王晓琳 男,1976年生,教授,研究方向为永磁电机、无轴承电机、高速电机的驱动和控制。E-mail: wangxl@nuaa.edu.cn   
作者简介: 鲍旭聪 男,1997年生,博士研究生,研究方向为高速电机控制技术、无轴承电机控制技术。E-mail: baoxc@nuaa.edu.com
引用本文:   
鲍旭聪, 王晓琳, 顾聪, 石滕瑞. 超高速永磁电机驱动系统电流环稳定性分析与改进设计[J]. 电工技术学报, 2022, 37(10): 2469-2480. Bao Xucong, Wang Xiaolin, Gu Cong, Shi Tengrui. Stability Analysis and Improvement Design of Current Loop of Ultra-High-Speed Permanent Magnet Motor Drive System. Transactions of China Electrotechnical Society, 2022, 37(10): 2469-2480.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.201421          https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I10/2469