TY - JOUR
T1 - Thermal Analysis of Outer Rotor PMSM Based on Flat Heat Pipe Cooling Method
AU - Ding, Jialu
AU - Xu, Zhenyao
AU - Du, Hongfeng
AU - Zhang, Fengge
AU - Wang, Shuo
AU - Bao, Yuli
N1 - Publisher Copyright:
© 2025 The Author(s). IET Electric Power Applications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.
PY - 2025/1/1
Y1 - 2025/1/1
N2 - Heat pipe is a kind of heat transfer element with very high thermal conductivity, which has a good application prospect in high power density driving motors. However, the complicated heat transfer process involves a variety of mechanisms, which undoubtedly increases the difficulty of temperature field modelling. Therefore, the equivalent thermal conductivity model of flat heat pipe (FHP) considering the influence of some factors was established. First, the mathematical model can fully consider the influence of the thickness of shell, the thickness of vapour chamber, the length of endothermic section and exothermic section on the equivalent thermal conductivity of FHP. Second, a test platform is built to test the equivalent thermal conductivity of FHP and the accuracy of established analytical model is verified. Finally, a 30-pole 36-slot high power density outer rotor permanent magnet synchronous motor (PMSM) is designed. Based on the FHP cooling method, FHPs placed in stator yoke are analysed, and the influence of different cooling structures on motor temperature rise is compared. At the same time, the effect of forced air cooling on the temperature rise of the motor is discussed, which provides a valuable reference for the application of FHP in the motor cooling.
AB - Heat pipe is a kind of heat transfer element with very high thermal conductivity, which has a good application prospect in high power density driving motors. However, the complicated heat transfer process involves a variety of mechanisms, which undoubtedly increases the difficulty of temperature field modelling. Therefore, the equivalent thermal conductivity model of flat heat pipe (FHP) considering the influence of some factors was established. First, the mathematical model can fully consider the influence of the thickness of shell, the thickness of vapour chamber, the length of endothermic section and exothermic section on the equivalent thermal conductivity of FHP. Second, a test platform is built to test the equivalent thermal conductivity of FHP and the accuracy of established analytical model is verified. Finally, a 30-pole 36-slot high power density outer rotor permanent magnet synchronous motor (PMSM) is designed. Based on the FHP cooling method, FHPs placed in stator yoke are analysed, and the influence of different cooling structures on motor temperature rise is compared. At the same time, the effect of forced air cooling on the temperature rise of the motor is discussed, which provides a valuable reference for the application of FHP in the motor cooling.
KW - heat transfer
KW - permanent magnet motors
KW - temperature distribution
UR - http://www.scopus.com/inward/record.url?scp=85218966239&partnerID=8YFLogxK
U2 - 10.1049/elp2.70012
DO - 10.1049/elp2.70012
M3 - Article
AN - SCOPUS:85218966239
SN - 1751-8660
VL - 19
JO - IET Electric Power Applications
JF - IET Electric Power Applications
IS - 1
M1 - e70012
ER -