Switch Contact Acceleration for High-Current Breaking
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Solution Overview
Problem
Existing switching devices for high voltage and high current applications lack sufficient breaking capabilities to manage high electromagnetically and electrostatically induced currents effectively.
Innovation Solution
A switching device design that accelerates both contact elements simultaneously during the transition from a closed to an open state, achieving high-speed separation by utilizing drive members to ensure instantaneous high-speed separation, thereby enhancing breaking capabilities for high voltage and high current applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional switching mechanisms are used, then the device structure remains simple, but the breaking capability is insufficient for high voltage and high current applications
Solution Approach 1:
The patent applies dynamics by transitioning from static contact elements to dynamically accelerated contact elements. Both contact elements are simultaneously accelerated during switching using drive members, creating a dynamic system where the separation speed is actively controlled to achieve high breaking capabilities for high voltage and current applications.
Solution Approach 2:
The patent segments the switching process into distinct phases: a first intermediate state where both contact elements are commonly accelerated together, and a second intermediate state where the contact elements separate. This segmentation allows independent control of acceleration and separation phases, enabling high breaking capability while managing system complexity through structured kinematic stages.
2Speed
If contact elements are separated quickly to improve breaking capability, then the separation speed increases, but the control precision of simultaneous acceleration becomes more difficult
Solution Approach 1:
The patent merges the acceleration control of both contact elements into a unified process during the first intermediate state. By commonly accelerating both contact elements together using coordinated drive members, the system ensures synchronized motion and maintains precise relative positioning, which then enables controlled separation in the second intermediate state with high separation speed.
Solution Approach 2:
The patent applies preliminary action by first commonly accelerating both contact elements together in the first intermediate state before separating them. This preliminary synchronized acceleration establishes a controlled initial condition that enables subsequent high-speed separation while maintaining manufacturing precision, as the contact elements are already synchronized and positioned correctly before the separation phase begins.
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 high breaking capabilities for very high currents, effectively managing high electromagnetically and electrostatically induced currents, making it suitable for high voltage and high current applications.
Implementation Method 1
the first and the second contact element are in electrical contact and are commonly accelerated by the at least one drive member relative to the base element in a first axial direction
Implementation Method 2
During normal operation, the housing may be filled with a gas, particularly quenching gas or insulation gas, like SF6 or any alternative
Data Source
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AI summary
According to an embodiment, the switching device (100) comprises a base element (4, 14, 24), a first contact element (12), a second contact element (22) and at least one drive member (13, 23). The first and the second contact element are arranged movably relative to each other and relative to the base element along an axis (A). The switching device is configured to switch from a closed state into an open state. The switching device is configured such that, during switching from the closed to the open state, the switching device adopts a first intermediate state in which the first and the second contact element are in electrical contact and are commonly accelerated by the at least one drive member relative to the base element in a first axial direction (Al). The switching device then switches from the first intermediate state into a second intermediate state in which the first and the second contact element are separated and in which the second contact element continues to move relative to the base element and additionally moves relative to the first contact element in the first axial direction.