Intelligent control module for permanent magnet contactor

Abstract

The invention discloses an intelligent control module of a permanent magnet contactor, which mainly comprises a microprocessor, a rectifier and filter, an internal working power circuit, a rechargeable battery control circuit, a closing operation module, an opening operation module, an energy-storage capacitor voltage detection circuit, a control voltage detection circuit, a power off detection circuit, and a key-press setting and display control circuit; wherein, the closing operation module consists of a first MOSFET driving protection circuit and a first MOSFET; and the opening operation module consists of a second MOSFET driving protection circuit and a second MOSFET. The intelligent control module can set delay time parameters of transient interference electricity through key-presses according to requirements of a customer, realizes delay disconnection of the permanent magnet contactor and can ensure the stable and continuous operation of equipment through staying away from influences of interference electricity; and as for conditions of requiring urgent opening operation, the intelligent control module can immediately cut off the contactor through key-press control, so as to ensure the safety of the operating equipment.

Description

technical field [0001] The invention relates to an intelligent control module of a permanent magnet contactor, which realizes the intelligent control of the permanent magnet contactor and belongs to the technical field of electrical appliances intelligence. Background technique [0002] The permanent magnet contactor inherits all the functions of the traditional electromagnetic contactor, and has the advantages of simple structure, energy saving, low noise, little influence on the grid voltage fluctuation, and the coil is not easy to burn out, which provides a new development for the development of high-performance energy-saving switching appliances development path. Therefore, the research on the permanent magnetic contactor has attracted extensive attention. [0003] Most existing permanent magnet contactor control circuits use analog control circuits to realize opening and closing control. After retrieval, the patent No. 200510040937.2 is the Chinese patent of the paten...

AI Technical Summary

Problems solved by technology

Therefore, in the process of closing the permanent magnet contactor, the suction force margin is relatively large, resulting in the collision speed of the dynamic and static iron cores being too fast, and the collision energy is relatively large during the closing process, which causes the secondary bounce of the dynamic and static contacts, which seriously affects The electrical life and mechanical life of the permanent magnetic contactor

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