Stator Winding Temperature Measurement via Thermal Contact Insert
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Solution Overview
Problem
Existing stators in rotating electrical machines face challenges in accurately measuring the temperature of electrical windings, which can lead to overheating and damage if not controlled effectively.
Innovation Solution
A stator design that incorporates an insert with a sensitive element in thermal contact with the electrical conductors, housed in a thermally conductive and insulating material, positioned close to the winding to ensure precise temperature measurement, and protected by a retaining groove and housing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature measuring element is placed close to the stator winding, then the temperature measurement precision is improved, but the measuring probe is exposed to harmful thermal effects and risk of damage
Solution Approach 1:
The patent introduces an intermediate component (the added part with mounting element) that positions the temperature measuring element close to the stator winding while providing thermal protection. The sensitive element is arranged to be in thermal contact with the electrical conductor via this intermediate structure, allowing accurate temperature measurement without direct exposure of the probe to harmful thermal conditions.
2Measurement precision
If the sensitive element is positioned in direct thermal contact with the electrical conductor, then the temperature measurement accuracy is improved, but the device complexity increases due to additional mounting structures
Solution Approach 1:
The patent merges multiple functions into the added part: it serves as both the mounting structure for the temperature measuring element and as the thermal conduction path to the electrical conductor. The sensitive element is arranged to be in thermal contact with the electrical conductor via the added part, which integrates the mounting and thermal contact functions, thereby reducing overall device complexity while maintaining measurement accuracy.
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 design allows for reliable and accurate temperature measurement of the stator winding, preventing overheating and protecting the measurement probe, thereby ensuring the optimal performance and longevity of the rotating electrical machine.
Implementation Method 1
the sensitive element is arranged so as to be in thermal contact with at least one electrical conductor via the added part
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention proposes a stator for a rotating electric machine of a motor vehicle, the stator (5) comprising: - an electrical winding (16), this winding comprising a plurality of electrical conductors (22), - at least one added part (25) mounted on the winding (16), - at least one temperature measuring probe (23) carried by said added part (25) and comprising at least one sensitive element (24) arranged to measure the temperature of the winding (16).