轨道交通直线感应电动机牵引系统精确瞬时速度检测技术研究

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摘要提出基于牛顿运动模型的电动机瞬时速度观测器,采用传感器低速异步采样法进行脉冲时刻的精准定位和速度观测器的高精度实时反馈校正。为提高低速工况下瞬时速度观测准确度,提出一种适合于轨道交通低开关频率应用场合的逆变器非线性模型误差补偿算法,并基于电动机本体方程提出一种能确保稳定性的次级电阻在线辨识算法。基于某地铁项目自主研发的直线电动机牵引控制系统进行实验验证,实验结果表明了所提算法的正确性和有效性。

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	刘可安
	田红旗
	刘勇

关键词 ：直线感应电动机, 速度检测, 逆变器非线性, 次级电阻辨识

Abstract：An instantaneous speed observer based on the Newton motion model is proposed in this paper.The sensor low-speed asynchronous sampling method is used to get the time exactly and the speed observer is corrected precisely in real time.In order to improve the accuracy of the speed observer at low speed,an inverter nonlinear error compensation modelsuitable for low switching frequency in railway application is proposed.Furthermore,based on the motor equation,an online estimation methodfor the secondary resistance is present to ensure the stability.All of the algorithms are tested in one real self-development metro line.And the experimental results show that the proposed methods are right and effective.

Key words： Linear induction motor speed detection inverter nonlinearity secondary resistance estimation

收稿日期: 2015-01-07 出版日期: 2015-11-12

PACS:

TM341

通讯作者: 刘可安男,1971年生,博士研究生,教授级高级工程师,研究方向为轨道交通大功率交流传动系统及其控制。

作者简介: 田红旗女,1959年生,教授,博士生导师,研究方向为轨道交通车辆空气动力学。

引用本文:

刘可安,田红旗,刘勇. 轨道交通直线感应电动机牵引系统精确瞬时速度检测技术研究[J]. 电工技术学报, 2015, 30(21): 161-169. Liu Kean,Tian Hongqi,Liu Yong. Precise Instantaneous Speed Detection Method for Linear Induction Motor Railway Traction System. Transactions of China Electrotechnical Society, 2015, 30(21): 161-169.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I21/161

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