Stator Coil Temperature Monitoring via Resilient Sensor Mounting
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Solution Overview
Problem
Existing electric motor systems face challenges in reliably monitoring the operating temperature of coil windings due to difficulties in achieving consistent contact with temperature sensors, which is crucial for thermal management and performance optimization.
Innovation Solution
A stator design that incorporates a thermistor attached via a resiliently deformable element, allowing it to be sprung loaded against the coil windings, ensuring reliable and consistent contact for temperature monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is placed within an electric motor to monitor coil winding temperature, then temperature monitoring capability is improved, but reliable and consistent contact with coil windings deteriorates
Solution Approach 1:
A resilient element acts as an intermediary between the temperature sensor and the coil windings. This element mechanically couples the sensor to the windings while accommodating relative movements and maintaining reliable thermal contact, thus resolving the contradiction between achieving temperature monitoring and ensuring contact reliability.
Solution Approach 2:
The resilient element provides dynamic adaptation between the sensor and coil windings. As the windings expand or contract with temperature changes or mechanical movements, the resilient element dynamically adjusts the contact pressure and position, ensuring continuous reliable contact while enabling accurate temperature monitoring.
2Reliability
If a resiliently deformable element is used to spring load the temperature sensor against coil windings, then contact reliability is improved, but device complexity increases
Solution Approach 1:
The resilient element is implemented as a flexible component that can be integrated into the stator structure. This flexible element provides the necessary spring loading force while maintaining a relatively simple structural form, thus improving contact reliability without significantly increasing device complexity.
Solution Approach 2:
The resilient element is merged with the stator structure, combining the functions of structural support and spring loading into a single integrated component. This merging reduces the number of separate parts and simplifies the overall device structure while maintaining reliable sensor contact.
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 solution enables accurate and reliable temperature monitoring of coil windings, improving thermal management and motor performance by ensuring consistent contact between the temperature sensors and the coil windings.
Implementation Method 1
a resiliently deformable element, allowing it to be sprung loaded against the coil windings
Implementation Method 2
arranged to monitor the operating temperature of the electric motor or generator
Data Source
AI summary
A stator for an electric motor or generator, the stator comprising a circumferential support having a plurality of first engagement elements distributed about the circumferential support, a first resiliently deformable element having a first temperature sensing element mounted on the circumferential support, a plurality of teeth for receiving coil windings, wherein each tooth includes a second engagement element to allow engagement with a first engagement element on the circumferential support for allowing each tooth to be mounted on the circumferential support, wherein coil windings on a tooth are arranged to engage with the first temperature sensing element when the tooth is being mounted to the circumferential support with the first resiliently deformable element being arranged to deform upon the coil windings on the tooth engaging with the first temperature sensing element to move the temperature sensing element from a first position to a second position.