A new permanent magnet AC contactor and its control circuit

被引：0
|
作者：
Wu Z. [1 ]
Shu L. [1 ]
Xu C. [1 ]
Wu G. [1 ]
Chen H. [2 ]
机构：
[1] The Key Laboratory of Low-Voltage Apparatus Intellectual Technology of Zhejiang(Wenzhou University), Wenzhou, 325000, Zhejiang Province
[2] Delixi Group Co., Ltd., Whenzhou, 325604, Zhejiang Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2016年 / 36卷 / 13期
基金：
中国博士后科学基金;
关键词：
Forced breaking; Logic circuit design; Permanent magnetic AC contactor; Protection mechanism;
D O I：
10.13334/j.0258-8013.pcsee.151398
中图分类号：
学科分类号：
摘要：
A new permanent magnet AC contactor was presented. When the contactor encounters breaking failure, the contactor can be forced to break under the actuation of a designed protection mechanism. A control circuit was developed to work with the making and breaking operations. The circuit was developed as two separate parts, the normal working circuit and the protection circuit. The normal working circuit was used for the normal operations and the protection circuit was used for the breaking protection when failure happened. In order to increase the working reliability, the power supply to the protection circuit was designed separately with the power of the normal working circuit. The power supply to the protection circuit was selected as the 380 V line voltage of the contactor contacts and the circuit was developed based on digital logic circuit design, without MCU. Time delay between the breaking control voltage and the auxiliary contact voltage was investigated. This time delay was used in the logic circuit design. Experimental results show that when the normal working circuit or the demagnetization coil encounters failure, the proposed contactor still can break effectively and potential electric damages can be avoided. © 2016 Chin. Soc. for Elec. Eng.
引用
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页码：3667 / 3673
页数：6
相关论文
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