Iterative conjugate heat transfer analysis for heat transfer enhancement of an externally cooled three-phase induction motor

作者：Tiwari Ankit^*; Yavuzkurt Savas

来源：IET Electric Power Applications, 2017, 11(1): 99-107.

DOI：10.1049/iet-epa.2016.0194

• induction motors
• computational fluid dynamics
• cooling
• rotors
• stators
• iterative conjugate heat transfer analysis
• heat transfer enhancement
• externally cooled three-phase induction motor
• thermal modelling
• drill pump motor
• constant speed three-phase induction motor
• computational fluid dynamics
• CFD
• rotor
• stator
• separate annulus model
• air gap
• boundary conditions
• annulus walls
• mesh generation quality
• FLUENT
• maximum temperature prediction

A novel iterative conjugate heat transfer method is proposed for thermal modelling of a drill pump motor which is a constant speed three-phase induction motor. The major advantage of this technique is that it enables computational fluid dynamics (CFD) and heat transfer analysis of the rotor and the stator in a segregated manner. The two are then coupled in a separate annulus model, which represents the air gap, via boundary conditions on the annulus walls. This greatly reduces the total number of computational cells and enables good quality mesh generation - a pre-requisite for accurate CFD predictions. To validate this method, a baseline CFD and heat transfer analysis was done using FLUENT and the maximum temperature prediction was found to be within 1.75% of the previously done experiments on the existing design of the machine. Further, this method was applied to develop a heat transfer enhancement solution which reduced the maximum temperature in the drill motor from 203.5 degrees C to 172.9 degrees C.

• 出版日期2017-1