Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analytical Assessment on the Cooling Structure of In-wheel Driving Inverter

인휠 모터 구동용 인버터의 냉각구조에 대한 해석적 평가

  • Kim, Sung Chul (Green Car Power System R&D Division, Korea Automotive Technology Institute)
  • 김성철 (자동차부품연구원 그린카파워시스템연구본부)
  • Received : 2013.01.08
  • Accepted : 2013.06.02
  • Published : 2014.03.01
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Abstract

In-wheel driving inverter inside engine room sometimes operates in the harsh environment like high temperature of about $105^{\circ}C$. Especially, the size and power density of the inverter has become smaller and more increased. Thus, it is essential to manage the temperature of the inverter with IGBT (Insulated Gate Bipolar Transistor) switching devices for performance and endurance, because the temperature can be getting increase. In this paper, we performed the thermal flow analysis of inverter models with wave type and pin fin type cooling channels, and investigated the heat transfer characteristics of the inverter models using cooling water on channels at 8 L/min and $65^{\circ}C$. Also, we compared the thermal performance under various conditions such as coolant flow rate and layered power module structure. Therefore, we determined the feasibility of the initial inverter models and the thermal performance enhancement.

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References

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