Reactor Relay Member Layout for Vibration Short Prevention
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Solution Overview
Problem
Existing reactors with relay members connected to coil terminals face complexity in shape design, leading to a risk of shorting due to vibration, as the relay members often cross each other.
Innovation Solution
A reactor design featuring three leg iron cores with coils having specific relative positional relationships between input and output coil ends, allowing for non-intersecting relay member arrangements that prevent shorting, with two coils having a first relative positional relationship and one coil having an opposite relationship, ensuring the relay members do not cross.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If relay members are connected to terminals of coils with same terminal positions, then the connection is standardized, but the shape of relay members becomes complicated and they cross each other
Solution Approach 1:
The patent applies asymmetry by creating two types of coils with different terminal arrangements: first coils where the input terminal and output terminal are at the same position, and second coils where the input terminal and output terminal are at different positions. This asymmetric design allows relay members to be arranged without crossing while maintaining standardized connections.
Solution Approach 2:
The patent inverts the conventional approach by having most coils (first coils) with terminals at the same position, rather than all coils having terminals at different positions. This inversion simplifies the relay member shape while preventing crossing through the specific arrangement of the minority second coils.
2Reliability
If relay members are arranged to connect coil terminals, then electrical connection is achieved, but the relay members cross each other causing risk of shorting due to vibration
Solution Approach 1:
By introducing asymmetric terminal arrangements in second coils (where input and output terminals are at different positions) alongside first coils (where terminals are at the same position), the patent creates a relay member layout that prevents crossing. This eliminates the harmful effect of vibration-induced shorting while maintaining reliable electrical connections.
Solution Approach 2:
The patent uses the different positional relationships of coil terminals as an intermediary mechanism to prevent relay member crossing. The specific arrangement of first and second coils acts as a mediator that separates relay member paths, preventing them from crossing and thus eliminating the shorting risk.
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 design simplifies the shape of relay members connected to coil terminals, reducing the risk of shorting due to vibration and maintaining operational stability.
Implementation Method 1
reactor having a relay member with input/output terminal... used to reduce inverter failure or to improve power factor... As a reactor that prevents magnetic flux from leaking to the outside
Data Source
AI summary
A reactor includes: an outer peripheral iron core; three leg iron cores; and three coils, each of the coils having an input side coil end and an output side coil end projecting from a same end surface on an end side in the axial direction of the three leg iron cores, where the three coils include two first coils in which a projecting position of the input side coil end and a projecting position of the output side coil end has a first relative positional relationship and include one second coil having a second relative positional relationship opposite to the first relative positional relationship and where winding directions from the input side coil end to the output side coil end of the first and the second coils are reversed to each other.