Dual Power Transfer Switch With Segmented Electromagnetic Drive
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Solution Overview
Problem
Conventional dual power supply transfer switches with large electric current levels require large electromagnets, increasing design and production costs due to the need for greater force and complexity in assembly.
Innovation Solution
A dual power supply transfer switch with a control circuit generating independent opening and closing signals, utilizing first and second driving parts to control the transfer switch between positions, reducing the electric current and stress on the execution mechanism, thereby optimizing volume and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a large electromagnet is used to drive the transfer switch for large electric current levels, then the switching force is sufficient, but the volume of the electromagnet increases and assembly complexity increases
Solution Approach 1:
The patent divides the single electromagnet into two separate electromagnets: a first electromagnet connected to the first power supply and a second electromagnet connected to the second power supply. Each electromagnet independently controls one side of the transfer switch, eliminating the need for a large single electromagnet while reducing assembly complexity and improving reliability.
2Force
If a large electromagnet is used to ensure sufficient switching force, then the switching capability is adequate, but the volume of the electromagnet increases
Solution Approach 1:
The patent segments the single large electromagnet into two smaller electromagnets that operate independently. Each electromagnet only needs to provide sufficient force for its respective side, resulting in smaller individual volumes and reduced overall space requirements compared to a single large electromagnet.
Solution Approach 2:
The patent enables dynamic operation where each electromagnet can be independently controlled based on which power supply needs to be switched. This dynamic control allows the system to use only the necessary electromagnet at any given time, optimizing force application while minimizing the volume requirements for each component.
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 allows for independent control of the transfer switch, minimizing electric current and stress on the mechanism, leading to reduced design and production costs while enhancing safety and reliability.
Implementation Method 1
the execution mechanism generally includes an electromagnet... drives the transfer switch to be opened from the first switching-on position or the second switching-on position to the intermediate position... drives the transfer switch to be closed from the intermediate position to the first switching-on position... drives the transfer switch to be closed from the intermediate position to the second switching-on position
Data Source
Figure 1
AI summary
Embodiments of the present disclosure provides a dual power supply transfer switch comprising a control circuit; a transfer switch capable of switching between a first switching-on position, an intermediate position and a second switching-on position; a first driving part cooperating with the transfer switch, wherein the first driving part drives the transfer switch to be opened from the first switching-on position or the second switching-on position to the intermediate position upon receiving the opening signal; and a pair of second driving parts each cooperating with the transfer switch, wherein one of the pair of second driving parts is capable of driving the transfer switch to be closed to the first switching-on position upon receiving the first closing signal, and the other one of the pair of second driving parts is capable of driving the transfer switch to be closed to the second switching-on position upon receiving the second closing signal.