Long-stroke linear permanent magnet motor operation mechanism of high-voltage breaker

Abstract

The invention provides a long-stroke linear permanent magnet motor operation mechanism of a high-voltage breaker. Long-stroke linear permanent magnet motor operation mechanism of high-voltage breaker is characterized in that the operation mechanism comprises a stator core, a rotor core, a driving rod and a permanent magnet, wherein the stator core is a box body; the rotor core is disposed in the stator core; the driving rod disposed at two ends of the rotor core passes through the upper and lower end shells of the stator core and can move up and down; the inner side wall of the stator core isprovided with a stator salient pole; the permanent magnet is disposed in the stator salient pole; the polarities of the upper and lower adjacent permanent magnets are opposite; the polarity arrangingdirections of the permanent magnets at left and right sides of the box body are the same; the stator salient pole is provided with an armature coil; the top part of the stator salient pole is provided with a pole shoe; the outer side wall of the rotor core is provided with a rotor salient pole; when the rotor core is located at the highest position, the lower half section of the stator salient pole at the uppermost end of the stator core faces the rotor salient pole; when the rotor core is located at the lowest position, the upper half section of stator salient pole at the lowest end of the stator core faces the rotor salient pole.

Description

technical field [0001] The invention belongs to the technical field of switchgear in electrical engineering, and in particular relates to an operating mechanism of a long-stroke linear permanent magnet motor for a high-voltage circuit breaker. Background technique [0002] The operating mechanisms of traditional high-voltage circuit breakers mainly include hydraulic mechanisms, pneumatic mechanisms, spring mechanisms and electromagnetic mechanisms. The hydraulic operating mechanism has a series of advantages such as high energy intensity, fast response, low noise, and reliable action. The pneumatic operating mechanism uses compressed air as an energy source to generate thrust, and does not require high-power DC power supply or laying control cables. Pneumatic and hydraulic systems can meet the long-stroke and high-power operation requirements, and are mainly used in high-voltage circuit breakers with high voltage levels. However, the system is complex and the reliability is ...

AI Technical Summary

Problems solved by technology

[0005]Technical problem: the invention aims at the short stroke of traditional electromagnetic, spring and permanent magnet mechanisms, which is difficult to meet the long-stroke opening and closing operation requirements of high-voltage circuit breakers. To solve the problem that the closing operation is difficult to guarantee, a long-stroke linear permanent magnet motor operating mechanism is provided to meet the opening and closing operation requirements of long-stroke high-voltage circuit breakers under the condition of outputting a certain electromagnetic operating force

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