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Actuators for medium voltage circuit breakers

A technology for actuators and circuit breakers, applied to high-voltage air circuit breakers, power devices and circuits inside switches, etc.

Active Publication Date: 2022-03-15
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The challenges with electromagnetic actuators are primarily: cost (competing with low-cost springs); high torque requirements in a compact size (competing with very high spring force densities); robustness (requiring electronics for controlled operation); and Modularity (current spring-operated actuators can be installed / removed with minimal disassembly of the circuit breaker

Method used

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  • Actuators for medium voltage circuit breakers
  • Actuators for medium voltage circuit breakers
  • Actuators for medium voltage circuit breakers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Figure 1 to Figure 6 Actuators for medium voltage circuit breakers as provided herein and how they operate with medium voltage circuit breakers are shown.

[0035] These figures show an actuator 1 for a medium voltage circuit breaker. The actuator comprises at least one rotor 10 , 80 , at least one stator 40 , 90 and at least one coil 70 , 100 . Each of the at least one stator is associated with a corresponding one of the at least one rotors. Each stator does not completely surround its associated rotor circumferentially. Each coil of the at least one coil is associated with a stator of the at least one stator. Each coil is wound around at least a portion of its associated stator. The rotation angle of each rotor is limited.

[0036] It should be noted that in the example the coils are wound around the stator such that free movement is not inhibited. Thus, the coils do not extend from or beyond the stator such that free movement of the rotor is affected.

[0037...

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PUM

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Abstract

The invention relates to an actuator (1) for a medium voltage circuit breaker. The actuator includes at least one rotor (10, 80), at least one stator (40, 90) and at least one coil (70, 100). Each of the at least one stator is associated with a corresponding one of the at least one rotors. Each stator does not completely surround its associated rotor circumferentially. Each coil of the at least one coil is associated with a stator of the at least one stator. Each coil is wound around at least a portion of its associated stator.

Description

technical field [0001] The invention relates to an actuator for a medium voltage circuit breaker, and to a medium voltage circuit breaker having such an actuator. Background technique [0002] Traditional medium voltage switchgear solutions use springs for opening and closing operations. However, this opening and closing behavior is not affected after assembly. Replacing the spring for the closing operation by an electromagnetic actuator allows the closing operation to be controlled by means of current control. In distribution networks with voltage levels between 10kV and 30kV, each distribution circuit is provided with a medium voltage switch which performs maintenance work in the event of a short circuit or overload or in a closed environment of the circuit will be disconnected. The breaking operation is usually accomplished by separating the contact of the two poles within the vacuum chamber, causing ignition of the vacuum arc carrying the arc current in the form of io...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/666
CPCH01H33/666H02K26/00H01H3/26
Inventor T·申德勒E·莫雷利M·布克W·瓦尔迪A·特苏茨S·布赖奇C·尼奇T·施塔尔H·罗伊特纳尔G·梅希勒
Owner ABB (SCHWEIZ) AG