地铁永磁牵引系统复矢量电流环稳定性研究*

doi:10.11985/2022.02.011

电气工程学报 ›› 2022, Vol. 17 ›› Issue (2): 92-100.doi: 10.11985/2022.02.011

• 特邀专栏:电气化交通中的电能变换与利用新技术 • 上一篇下一篇

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地铁永磁牵引系统复矢量电流环稳定性研究^*

沐俊文¹(), 葛兴来¹(), 朱丹²

1.西南交通大学电气工程学院成都 611756
2.中车大连机车车辆有限公司大连 116022

收稿日期:2022-02-28 修回日期:2022-04-25 出版日期:2022-06-25 发布日期:2022-08-08
通讯作者: 葛兴来 E-mail:512823852@qq.com;xlgee@163.com
作者简介:沐俊文,男,1995年生,博士研究生。主要研究方向为电力电子与电力传动。E-mail： 512823852@qq.com
基金资助:
*国家自然科学基金资助项目(52177060)

Research on Current Loop Stability of Metro Permanent Magnet Traction System

MU Junwen¹(), GE Xinglai¹(), ZHU Dan²

1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756
2. CRRC Dalian Co., Ltd., Dalian 116022

Received:2022-02-28 Revised:2022-04-25 Online:2022-06-25 Published:2022-08-08
Contact: GE Xinglai E-mail:512823852@qq.com;xlgee@163.com

摘要/Abstract

摘要：

针对地铁永磁牵引系统应用背景下的电流控制环易失稳问题,首先,推导了基于复矢量电流控制器的内置式永磁同步电机电流环闭环传递函数,并探讨了其在变速条件下的解耦性能;其次,依据电流环闭环传递函数零极点分布图逐一分析了时间延时和角度延迟对控制系统稳定性的影响,并在综合考虑数字控制延时的条件下推导了稳定性边界条件。然后,线性化永磁同步电机机械运动方程,推导了系统闭环传递函数,绘制其零极点分布图,并分析了不同工况下的稳定边界条件。最后,测试验证了理论分析的正确性。

关键词: 永磁同步电机, 数字控制延时, 稳定性分析, 复矢量电流调节器

Abstract:

In the context of metro permanent magnet traction system applications, the current control loop is prone to instability. Firstly, the current loop closed-loop transfer function of PMSM based on complex vector current controller is derived, and its decoupling performance under variable speed condition is discussed. Secondly, the influences of time delay and angle delay on the stability of the control system are analyzed according to the zero-pole diagram of the current-loop transfer function, and the stability boundary conditions are derived considering the digital control delay comprehensively. Then, the mechanical motion equation of permanent magnet synchronous motor is linearized, the closed-loop transfer function of the system is derived, the zero-pole diagram is drawn, and the stability boundary conditions under different working conditions are analyzed. Finally, experiments verify the correctness of the theoretical analysis.

Key words: Permanent magnet synchronous motor(PMSM), digital control delay, stability analysis, complex vector current controller

中图分类号:

TM351

沐俊文, 葛兴来, 朱丹. 地铁永磁牵引系统复矢量电流环稳定性研究^*[J]. 电气工程学报, 2022, 17(2): 92-100.

MU Junwen, GE Xinglai, ZHU Dan. Research on Current Loop Stability of Metro Permanent Magnet Traction System[J]. Journal of Electrical Engineering, 2022, 17(2): 92-100.

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电机参数	数值	电机参数	数值
额定功率/kW	190	额定电压/V	926
额定电流/A	138	极对数	4
定子电阻/Ω	0.045 9	q轴电感/mH	3.96
d轴电感/mH	1.58	永磁磁链/Wb	0.683 8
额定转速/(r/min)	1 800	转动惯量/(kg·m²)	10

地铁永磁牵引系统复矢量电流环稳定性研究^*

Research on Current Loop Stability of Metro Permanent Magnet Traction System

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