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A Study for Applying Thermoelectric Module in a Bogie Axle Bearing
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 Title & Authors
A Study for Applying Thermoelectric Module in a Bogie Axle Bearing
Choi, Kyungwho; Kim, Jaehoon;
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There has been intense research on self-diagnosis systems in railway applications, since stability and reliability have become more and more significant issues. Wired sensors have been widely used in the railway vehicles, but because of the difficulty in their maintenance and accessibility, they ar not considered for self-diagnosis systems. To have a self-monitoring system, wireless data transmission and self-powered sensors are required. For this purpose, a thermoelectric energy harvesting module that can generate electricity from temperature gradient between the bogie axle box and ambient environment was introduced in this work. The temperature gradient was measured under actual operation conditions, and the behavior of the thermoelectric module with an external load resistance and booster circuits was studied. The proposed energy harvesting system can be applied for wireless sensor nodes in railroad vehicles with optimization of thermal management.
Thermoelectric Energy Harvesting;Self-powered System;Railway Vehicle;
 Cited by
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