Research on Position Detection Method of Intelligent Contactor Based on Closed-Loop Motion Process

doi:10.11985/2015.09.012

Abstract

Abstract:

The arc and collision of contactor during the breaking and closing of AC contactor are the main factors of influencing its electric life, the closed-loop servo control is the effective way to achieve its closing with low speed and non-bounce and opening with fast breaking and non-arc by changing the excitation current to make it running according the planned speed, so real-timely and accurately detecting its speed is the key factor to realize its closed-loop control. Aiming at the problem of now available speed detection device with low measurement accuracy,small range and complex structure so that it can′t get a well application for contactor, in this paper presenting a new method of speed detection and a device, Analyzing the key factors which affecting the accuracy of speed is the magnetic flux. Calculating the influencing of magnetic pressure and flux leakage to flux calculation with two methods of magnetic circuit modeling and finite element calculation, the magnetic induction density keeping constant can greatly improve the accuracy of detection through the linear gap compensation. Simulation and experimental results show that the method has advantages of high precision and fast response, and can well meet the speed detection for AC contactor.

Key words: Intelligent AC contactor, closed-loop servo control, flux calculation, speed detection, linear air gap compensation

CLC Number:

TM572

Zong Ming,Chen Dizhong,Liu Tonglin. Research on Position Detection Method of Intelligent Contactor Based on Closed-Loop Motion Process[J]. Journal of Electrical Engineering, 2015, 10(9): 73-78.

Figures/Tables 12

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References 11

[1]	许志红 . 交流接触器智能化控制与设计技术的研究及实现[D]. 福州:福州大学, 2005.
[2]	许志红, 张培铭, 郑昕 . 智能交流接触器零电流分断控制技术的实现[J]. 低压电器, 2006(7):6-11.
	Xu Zhihong, Zhang Peimin, Zheng Xin . Zero current interrupt control of intelligent AC contactor[J]. Low Voltage Apparatus, 2006(7):6-11.
[3]	刘颖异, 陈德桂, 袁海文 , 等. 带电流反馈的永磁接触器动态特性仿真与分析[J]. 中国电机工程学报, 2010,30(15):118-124.
	Liu Yingyi, Chen Degu, Yuan Haiwen , et al. Simulation and analysis on dynamic characteristics of permanent magnetic contactor with current feedback[J]. Proceedings of the CSEE, 2010,30(15):118-124.
[4]	许志红, 张培铭 . 智能交流接触器全过程动态优化设计[J]. 中国电机工程学报, 2005,25(3):14-16.
	Xu Zhihong, Zhang Peimin . Research on dynamic closing course of intelligent AC contactor[J]. Proceedings of the CSEE, 2005,25(3):14-16.
[5]	王育愧, 吴建华, 杨仕友 . 多目标矢量优化的改进遗传算法及其在电磁装置优化设计中的应用[J]. 中国电机工程学报, 2003,23(1):31-36.
	Wang Yuhuai, Wu Jianhua, Yang Shiyou . An imporved genetic algorithm for vector optimization and its application to design optimizations of electromagnetic devices[J]. Proceedings of the CSEE, 2003,23(1):31-36.
[6]	许志红, 张培铭 . 智能交流接触器零电流分断控制技术[J]. 电工电能新技术, 2002,21(4):54-57.
	Xu Zhihong, Zhang Peiming . Zero current interrupt control of intelligent AC contactor[J]. Advanced Technology of Electrical Engineering and Energy, 2002,21(4):54-57.
[7]	Kiely H, Nouri H, Kalvelage F , et al. Development of an application specific integrated circuit for reduction of contact bounce in three phase contactors[C]. Proceedings of the Forty-Sixth IEEE Holm Confereence, Chicago, 2000: 120-129.
[8]	Mechler P . Simulation of AC arc faults in aircraft electrical networks[C]. 21st International Conference on Electrical Contacts, Swityerland, 2002: 290-295.
[9]	程丽娜, 匙庆磊 . 一种有源低频速度传感器样机的设计[J]. 传感器学报, 2012,25(8):1069-1072.
	Cheng Lina, Chi Qinglei . An active ultra-low-frequency speed sensor prototype design[J]. Chinese Journal of Sensors and Actuators, 2012,25(8):1069-1072.
[10]	郭思源, 周理兵, 曲荣海 , 等. 基于精确子域模型的游标永磁电机解析磁场计算[J]. 中国电机工程学报, 2013,33(30):73-80.
	Guo Siyuan, Zhou Libing, Qu Ronghai , et al. Analytical magnetic field calculation of vernier permanent-magnet machines based on accurate subdomain model[J]. Proceedings of the CSEE, 2013,33(30):73-80.
[11]	何志明, 廖勇, 李辉 . 一种新颖的无传感器异步电动机直接转矩控制系统[J]. 电工技术学报, 2009,24(11):21-25.
	He Zhiming, Liao Yong, Li Hui . A novel sensorless induction motor DTC system[J]. Transactions of China Electrotechnical Society, 2009,24(11):21-25.

参数		数值
动磁极铁心尺寸		135mm×5mm×14mm
静磁极截面积	上	5mm×14mm
静磁极截面积	下	5mm×5mm
静磁极铁心长度	上下	45mm
静磁极铁心长度	左右	34mm
动静磁极气隙长度		0.75mm
动静磁极初始相交截面积		5mm×3mm
测量线圈匝数		200
永磁体（LNG52）尺寸		5mm×14mm×5mm