Journal of Institute of Convergence Technology (융복합기술연구소 논문집)

Institute of Convergence Technology (한국교통대학교 융복합기술연구소)
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Temperature Distribution Variation in Large-Capacity Electric Motor due to Internal Heat Generation

전동기 내부 발열에 따른 대용량 전동기 온도 분포 변화

  • Jun Su Park (Department of Automotive Engineering Korea National University of Transportation)
  • 박준수 (한국교통대학교 자동차공학전공)
  • Received : 2024.10.25
  • Accepted : 2024.11.19
  • Published : 2024.11.30
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Abstract

Large-capacity electric motors generate significant heat during operation, which impacts efficiency and durability due to increased resistance, magnetic flux loss, and insulation degradation. This study addresses these issues by analyzing the effects of thermal contact resistance, airflow, and ambient temperature on motor temperature distribution. Using finite element analysis (FEM), the study models a 135 kW motor in a cooling tower environment, incorporating different thermal contact resistances and airflow rates, and adjusting external temperatures to observe heat dissipation effects. Results indicate that higher thermal contact resistance causes localized overheating, while increased airflow and controlled ambient temperatures effectively reduce motor temperatures. These findings highlight essential considerations for optimized cooling design, enhancing the performance and lifespan of high-power motors in industrial applications.

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Acknowledgement

2024년 한국교통대학교 지원을 받아 수행하였음

References

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