Electric Machine Wire Routing Guide
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Solution Overview
Problem
In electrical machines, connection wires for temperature and position sensors are prone to damage due to vibratory and thermal stresses, leading to potential grounding or breakage from friction with the machine's castings.
Innovation Solution
A guidance system integrated into an annular damper is used to route the connection wire around the interconnector, preventing contact with the machine's castings, featuring grooves, clips, and elastic elements to securely hold the wire in place between the measurement point and remote connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connection wire is routed freely in the machine environment, then the installation is simple, but the wire is prone to wear and damage from contact with castings under vibratory and thermal stresses
Solution Approach 1:
The guidance system merges the wire routing function with the existing annular damper structure. The grooves are directly formed in the damper body, integrating two functions (damping and wire guidance) into a single component, thereby protecting the wire without significantly increasing overall device complexity
Solution Approach 2:
The grooves in the damper act as an intermediary structure that mediates between the connection wire and the harmful machine environment. The wire passes through these grooves which are positioned to prevent contact with castings and other harmful elements, thus protecting the wire indirectly
2Reliability
If the connection wire is secured in grooves with clips and elastic elements, then the wire protection is improved, but the manufacturing complexity increases
Solution Approach 1:
The elastic elements and clips are designed to automatically secure the wire in the grooves through their inherent elastic properties. The wire insertion triggers the elastic elements to engage and lock the wire in place without requiring additional fastening operations or complex assembly tools, making the assembly process straightforward
Solution Approach 2:
The elastic elements utilize flexible material properties to provide secure wire fixation. The flexibility allows the elements to deform during assembly and then maintain constant contact pressure on the wire, ensuring reliable retention without rigid complex mechanisms
Data Source
Figure 1a~1b
Figure 2~3a
Figure 3b~3c
AI summary
The invention pertains to a rotating electric machine comprising a stator (11) furnished with teeth (14) around which are wound a set of coils (19), an annular interconnector (22) bearing on the stator (11) furnished with tabs to which are soldered ends of the coils (19) for formation of phases of the electric machine, and a measurement probe linked to a remotely sited connector (101 ) by way of at least one connection wire (99). The electric machine furthermore comprises a guiding system (98) configured to ensure guiding of the connection wire (99) around the interconnector (22) between the measurement probe and the remotely sited connector (101) of the said measurement probe. The subject of the invention is also the corresponding guiding system (98).