一种新型永磁交流接触器及其控制电路

发布时间：2018-05-20 19:11

本文选题：永磁交流接触器 + 保护装置　；参考：《中国电机工程学报》2016年13期

【摘要】：提出一种带分断保护装置的新型永磁交流接触器,接触器分为机构部分与控制电路部分。当永磁接触器控制回路失电或者退磁线圈出现故障、接触器无法正常分断时,保护装置此时会被触发,迫使接触器铁心克服永磁体吸力进行强制分断。设计了一种控制电路与接触器进行配合工作,电路分正常工作电路和保护电路两部分。正常工作电路负责控制接触器进行正常的分断与吸合操作,保护电路则负责检测并触发保护装置进行强制分断保护。为提高电路可靠性,保护电路全部采用逻辑电路进行设计,无CPU控制单元。同时,为提高供电可靠性,保护电路与正常工作电路电源单独进行设计,保护电路电源采用接触器主触头380V线电压供电。通过实验研究了分断控制电压与辅助触头电压间的时延,此时延作为保护电路的设计基准。同时进行了分断保护特性实验,实验结果表明所提出的新型交流永磁接触器在正常工作回路失电或者出现故障时,保护装置可有效解决永磁接触器无法分断的问题,大幅提高永磁接触器的工作可靠性。
[Abstract]:A new type of permanent magnet AC contactor with break protection device is proposed. The contactor is divided into two parts: the mechanism part and the control circuit part. When the control circuit of the permanent magnet contactor is out of power or the demagnetizing coil is out of order, the protection device will be triggered, forcing the contactor core to overcome the suction of the permanent magnet. A control circuit is designed to work with contactor. The circuit is divided into two parts: normal working circuit and protective circuit. The normal working circuit is responsible for controlling the contactor to perform normal breaking and sucking operation, while the protection circuit is responsible for detecting and triggering the protective device for forced break protection. In order to improve the reliability of the circuit, the protection circuit is designed by logic circuit without CPU control unit. At the same time, in order to improve the reliability of power supply, the protection circuit and the normal working circuit power supply are designed separately. The main contactor contact is used to supply the power supply with 380 V line voltage. The delay between the break control voltage and the auxiliary contact voltage is studied experimentally, and the delay is used as the design reference of the protection circuit. The experimental results show that the new AC permanent magnet contactor can effectively solve the problem that the permanent magnet contactor can not be broken when the normal working circuit is out of power or when the fault occurs. The reliability of permanent magnet contactor is greatly improved.
【作者单位】：浙江省低压电器智能技术重点实验室(温州大学);德力西集团有限公司;
【基金】：浙江省自然科学基金面上项目(LY15E050011) 浙江省“钱江人才计划”D类计划项目(QJD1302003) 中国博士后科学基金项目(2015M571904) 温州大学研究生创新基金(3162014035)~~
【分类号】：TM572.2

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