Dual-Coil Relay Actuation for Fast Transfer and Low Bounce
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Solution Overview
Problem
Existing relays in power distribution systems, such as those used in data centers and data centers, are limited by slow transfer times, which exceed the tolerance of modern EDP equipment, leading to potential power outages and equipment failure.
Innovation Solution
The use of a bi-directional electromagnetic drive system to accelerate and decelerate the moveable electrode structure of relays, optimizing the motion of the armature to reduce transfer time and minimize bounce, using dual coils to control the electromagnetic force for precise motion control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional relay mechanisms are used, then device simplicity is maintained, but relay transfer time is too slow for modern EDP equipment requirements
Solution Approach 1:
The patent applies dynamics by implementing a bi-directional electromagnetic drive system that dynamically controls the armature's motion throughout its travel path. The system transitions the relay from static, uniform motion to dynamic, variable motion with controlled acceleration and deceleration phases, enabling precise timing and reduced transfer time while managing mechanical stress
Solution Approach 2:
The patent segments the electromagnetic drive function into two independent coils: a first coil for accelerating the armature and a second coil for decelerating it. This segmentation allows each coil to be optimized for its specific function, achieving faster transfer times while maintaining control over the armature's motion profile and reducing mechanical impact
2Speed
If relay transfer speed is increased, then power distribution responsiveness is improved, but mechanical stress and contact bounce increase
Solution Approach 1:
The patent applies preliminary action by using the first electromagnetic coil to accelerate the armature to an optimized velocity before contact, and then using the second coil to pre-decelerate the armature before it reaches the contacts. This preliminary control of motion parameters minimizes impact velocity and mechanical stress at the moment of contact, reducing bounce and extending contact life
Solution Approach 2:
The patent converts the potentially harmful high-velocity impact into a benefit by using controlled deceleration. The second electromagnetic coil transforms the kinetic energy that would cause damaging bounce into a controlled stopping process, where the deceleration force is applied optimally to bring the armature to rest precisely at the contact point, eliminating harmful vibrations while maintaining fast transfer speed
3Loss of time
If relay transfer time is reduced below 20 milliseconds, then equipment tolerance requirements are met, but electromagnetic control complexity increases
Solution Approach 1:
The patent applies periodic action through a structured two-phase electromagnetic control sequence: an acceleration phase using the first coil, followed by a deceleration phase using the second coil. This periodic, phased approach to electromagnetic actuation provides predictable, repeatable transfer timing that consistently achieves sub-20-millisecond performance while keeping control logic manageable through clear phase separation
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
This approach significantly reduces relay transfer time to less than 20 milliseconds, enhances contact durability, and minimizes mechanical stress and arcing, ensuring reliable power transfer even in critical environments.
Implementation Method 1
a bi-directional electromagnetic drive system to accelerate and decelerate the moveable electrode structure of relays
Implementation Method 2
using dual coils to control the electromagnetic force for precise motion control
Data Source
AI summary
An electrical relay (2) includes an electromagnetic drive system for providing bi-directional drive. The electrical relay (2) includes a first a coil (212) and a second coil (213). A current is supplied to the coils (212) and (213) in opposite directions. The two coils (212) and (213) can be used to accelerate the armature in either direction in relation to the two contacts. This can be used to drive the armature to either one of the contacts and to accelerate and decelerate the armature during a single transit. In the latter regard, the armature can be accelerated and decelerated to shorten the transit time, reduce bounce, reduce wear on the contacts, and allow for different contact material options.