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

A high-voltage circuit breaker and operating mechanism technology, applied in the field of high-voltage circuit breaker long-stroke linear permanent magnet motor operating mechanism, can solve the problem that it is difficult to meet the long-stroke opening and closing operation requirements of high-voltage circuit breakers, the opening and closing operation is difficult to guarantee, and the permanent magnet The short stroke of the mechanism can reduce the risk of irreversible demagnetization, improve the torque density, and achieve the effect of strong magnetic concentration effect

Active Publication Date: 2011-08-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] Depend on figure 1 It can be seen that an operating mechanism of a long-stroke linear permanent magnet motor for a high-voltage circuit breaker includes a stator core 1, a mover core 4, a driving rod 5, and a permanent magnet 2. The stator core 1 is a box body, and the mover core 4 is placed In the stator core 1, the drive rods 5 arranged at both ends of the mover core 4 pass through the casings at both ends of the stator core 1 and can move up and down. The inner side wall of the stator core 1 is provided with a stator salient pole 6, and the inside of the stator salient pole The permanent magnet 2 is set, and the polarities of the upper and lower adjacent permanent magnets are opposite, that is, the polarities of the opposite surfaces of the upper and lower adjacent permanent magnets are the same, as figure 1 As shown in , the upper and lower permanent magnets a...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10H01H3/26
Inventor 张建忠程明王敏希
Owner SOUTHEAST UNIV
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