电器与能效管理技术 ›› 2024, Vol. 0 ›› Issue (10): 1-6.doi: 10.16628/j.cnki.2095-8188.2024.10.001

• 研究与分析 •    下一篇

基于无传感器的交流接触器位移控制策略

张军辉, 刘树鑫, 刘洋, 邢朝健   

  1. 教育部特种电机与高压电器重点实验室(沈阳工业大学), 辽宁 沈阳 110870
  • 收稿日期:2024-05-24 出版日期:2024-10-30 发布日期:2024-12-12
  • 作者简介:张军辉(1994—),男,硕士研究生,研究方向为电器状态监测及电器智能化。|刘树鑫(1982—),男,副教授,博士,研究方向为电器状态监测与电器智能化。|刘 洋(1982—),男,工程师,博士,研究方向为电器状态监测与电器智能化。
  • 基金资助:
    辽宁省科技重大项目资助(2020H/10100012);辽宁省科技厅“揭榜挂帅”科技攻关专项资助(2022JHI/10800015)

Displacement Control Strategy of AC Contactor Based on Sensorless Technology

ZHANG Junhui, LIU Shuxin, LIU Yang, XING Chaojian   

  1. Key Laboratory of Special Electric Machines and High Voltage Apparatus in the Ministry of Education (Shenyang University of Technology),Shenyang 110870, China
  • Received:2024-05-24 Online:2024-10-30 Published:2024-12-12

摘要:

针对传统接触器控制模型可靠性低、控制精度差等问题,提出一种基于无位置传感器的交流接触器吸合过程动态控制仿真分析方法。首先,根据交流接触器的磁路模型,推导出交流接触器动铁心的位移公式,形成位移估算器;在位移估算器的基础上进行吸力预测,并根据控制模型设计闭环控制器。其次,建立交流接触器的动态闭环控制仿真模型,通过对比分析交流接触器在非受控、脉冲宽度调制(PWM)分时控制和位移闭环控制3种模式下的闭合时间,证实位移闭环控制方案的有效性。最终,实验结果证实所提模型的精确度以及控制策略的实用性,为交流接触器的智能控制提供思路。

关键词: 交流接触器, 动态特性仿真, 吸力预测, PWM控制, 闭环控制

Abstract:

Aiming at the problems of low reliability and poor precision of traditional contactor control model,a dynamic simulation and analysis method of AC contactor suction process based on sensorless technology is proposed.Firstly,according to the magnetic circuit model of AC contactor,the displacement formula of moving iron core of AC contactor is deduced,and the displacement estimator is formed.Based on the displacement estimator,the suction force is predicted,and a closed-loop controller is designed according to the control model.Then,the dynamic closed-loop control simulation model of AC contactor is established,and the closing time of AC contactor in three modes of uncontrolled,PWM time-sharing control and displacement feedback closed-loop control is compared and analyzed,which proves that the displacement closed-loop control scheme has remarkable effectiveness.Finally,the experimental results confirm the accuracy of the model and the practicability of the control strategy,and provide some ideas for the intelligent control of AC contactor.

Key words: AC contactor, dynamic characteristic simulation, suction prediction, PWM control, closed-loop control

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