Electromagnetic repulsion force system and permanent magnetic system coupled self-adapting control mechanism

Abstract

The invention discloses a self-adaptive control mechanism which couples an electromagnetic repulsion system with a permanent magnetism system. The invention adopts an electromagnetic repulsion device spinning disk of circular table structure, relatively to the circular disk spinning disk, which maintains the mechanical strength and output capacity of the spinning disk, simultaneously greatly reduces the increase of kinematic scheme mass of the control mechanism, and greatly enhances the driving load capacity of the control mechanism. The control mechanism of the invention adopts the self-adaptive motion proposal, which avoids the frequent high speed motion of a breaker, reduces the mechanical strength request for the breaker, and prolongs the motion life of the breaker effectively.

Description

technical field [0001] The invention belongs to an operating mechanism used in a power system circuit breaker, in particular to an adaptive operating mechanism coupled with an electromagnetic repulsion system and a permanent magnet system. Background technique [0002] At present, the operating mechanisms of vacuum circuit breakers mainly include electromagnetic operating mechanisms, spring operating mechanisms and permanent magnetic operating mechanisms. [0003] The electromagnetic operating mechanism has been widely used in the early stage of the development of vacuum circuit breakers, but the electromagnetic operating mechanism has a bulky structure and takes a long time to operate. [0004] The spring operating mechanism is the most commonly used type of operating mechanism for vacuum circuit breakers. Its advantage is that it does not require a high-power DC power supply, but only needs a low-power AC-DC dual-purpose energy storage motor. The disadvantage is that the s...

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Problems solved by technology

[0008] The electromagnetic repulsion device used in the above-mentioned quick operating mechanism adopts a round pie-shaped eddy current disk. When the load that the quick operating mechanism needs to drive is large, the electromagnetic repulsion device needs to provide a very large electromagnetic repulsion to achieve faster action. At this time, in order to improve the mechanical strength of the eddy current disk of the electromagnetic repulsion mechanism, it is necessary to increase the thickness of the eddy current disk, which will lead to a substantial increase in the mass of the vortex disk, and the motion inertia of the motion system of the operating mechanism will increase significantly, which is not conducive to the operating mechanism. Perform quick operation under heavy load; at the same time, the above-mentioned quick operating mechanism only provides the only opening action scheme, that is, the electromagnetic repulsion device is used to realize quick action opening. When the operating mechanism performs short-circuit opening of the circuit breaker, Quick action is very necessary, but in the process of using the circuit breaker, short-circuit opening is not common, while opening under rated current and no-load is more frequent, frequent high-speed action will affect the strength of all aspects of the circuit breaker High requirements are put forward, which is not conducive to ensuring a long service life of the circuit breaker

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