Separate magnetic circuit permanent magnetic mechanism contactor and control unit thereof

Abstract

The invention discloses a separate magnetic circuit permanent magnetic mechanism contactor and a control unit thereof. A movable core comprises an electromagnetic circuit movable core (1), a movable core low magnetic conducting clapboard (2) and a permanent magnetic circuit movable core (3); a static core comprises a permanent magnet (4), a permanent magnetic circuit static core (5), a static core low magnetic conducting clapboard (6) and an electromagnetic circuit static core (7); and a coil comprises a trip coil (J2) and closing coils (JI) fixed at the two ends of the electromagnetic circuit static core (7). The control unit comprises a power module (P1), a capacitance voltage monitoring module (P2), a closing module (P3), an energy storage module (P4), a trip module (P5), a closing short-time conductive module (P6), the closing coils (J1) and the trip coil (J2). The permanent magnetic mechanism with separate magnetic circuit leads the permanent magnetic circuit to be separated from the electromagnetic circuit and not mutually affected; and the introduction of the closing short-time conductive module (P6) can reduce the volume of an energy storage capacitance, enhance the closing capacity of the permanent magnetic contactor, as well as ensure large volume and normal closing of the permanent magnetic contactor with a long opening distance.

Description

technical field [0001] The invention belongs to the design field of low-voltage electrical appliances, relates to a permanent magnet contactor, in particular to a permanent magnet mechanism contactor with a separated magnetic circuit and a control unit thereof, and belongs to the technical field of contactor manufacture. Background technique [0002] Contactors are low-voltage electrical appliances widely used in industrial and civil power transmission and distribution equipment. Compared with electromagnetic contactors, permanent magnet contactors have many advantages such as energy saving, noise reduction and better dynamic characteristics, and are widely recognized by relevant research institutions at home and abroad. focus on [1-2] . At present, the research of permanent magnet contactor mainly focuses on the permanent magnet operating mechanism and control method. The existing permanent magnet operating mechanism can be divided into monostable permanent magnet operati...

AI Technical Summary

Problems solved by technology

Another object of the present invention is to solve the contradiction between monostable permanent magnet contactors requiring large closing pulse current and small opening pulse current, and at the same time solve the problem of enhancing the closing ability of permanent magnet contactors with large current levels and long contact strokes

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