Short-Circuiting Trigger Using Air-Core Coils and Spring Energy
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Solution Overview
Problem
Existing short-circuiting devices in high-voltage systems are susceptible to stray magnetic fields and require pyrotechnic drives, which pose regulatory challenges and safety concerns.
Innovation Solution
An electrical short-circuiting device with an electrically driven actuator and a trigger device that uses air-core coils to achieve fast and reliable triggering without permanent magnets, combined with a mechanical energy store like a spring arrangement for energy supply, ensuring quick and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pyrotechnic drives are used for short-circuiting, then triggering speed is improved, but regulatory compliance and safety become problematic
Solution Approach 1:
The patent replaces the pyrotechnic drive system with an electrically driven actuator system. The actuator uses electromagnetic forces to trigger the short-circuiting mechanism, eliminating the need for explosive substances while achieving comparable triggering speeds. This substitution resolves the contradiction by maintaining speed performance while improving regulatory compliance and safety.
2Force
If permanent magnets are used in the trigger device, then triggering force is improved, but susceptibility to stray magnetic fields increases
Solution Approach 1:
The patent removes permanent magnets from the trigger device entirely. Instead of using permanent magnets that are susceptible to stray magnetic fields, the invention employs electrically driven actuators that generate electromagnetic forces on demand. This extraction of the problematic component eliminates susceptibility to stray magnetic fields while maintaining adequate triggering force through controlled electromagnetic actuation.
3Reliability
If electrical actuators are used instead of pyrotechnic drives, then regulatory compliance is improved, but triggering speed may be reduced
Solution Approach 1:
The patent optimizes the electrical actuator system by adjusting key parameters including coil geometry, winding configurations, and energization timing. These parameter changes enable the electrical actuator to achieve triggering speeds comparable to pyrotechnic systems. The solution demonstrates that with proper parameter optimization, electrical actuators can meet both regulatory compliance requirements and speed performance targets.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables rapid and reliable short-circuiting with closing times under 2 ms, resistant to stray magnetic fields, and simplifies regulatory compliance by eliminating pyrotechnic substances, ensuring quick and safe operation in high-voltage systems.
Implementation Method 1
the two coils being air-core coils that can be actively energized at least in respect of their interaction
Implementation Method 2
combined with a mechanical energy store like a spring arrangement for energy supply
Data Source
AI summary
An electrical short-circuiting device includes a fixed contact piece and a movable contact piece. The fixed and movable contact pieces are distanced from one another in a basic position and electrically conductively connected to one another in a short-circuit position. A drive transfers the movable contact piece from the basic position into the short-circuit position, and a trigger device includes an electrically driven actuator for triggering the drive.