Thermal analysis of a high-speed PM machine using numerical and thermal-network method

2010 ◽  
Author(s):  
Z. Kolondzovski ◽  
P. Sallinen ◽  
A. Arkkio
Keyword(s):  
Thermal Analysis ◽  
High Speed ◽  
Thermal Network ◽  
Network Method ◽  
Thermal Network Method

A Temperature Field Model of Complicated Thermal Analysis System Based on Thermal Network Method

2013 ◽  
Vol 694-697 ◽  
pp. 695-698 ◽  
Author(s):  
Ze Jin Lin ◽  
Jie Hong Yuan ◽  
Yuan Li ◽  
Xi Jie Yan ◽  
Shi Ming Zhou ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Temperature Field ◽  
Transient Temperature ◽  
Thermal Network ◽  
Heat Transfer Theory ◽  
Steady State Temperature ◽  
Network Method ◽  
Temperature Field Model ◽  
Thermal Network Method ◽  
Analysis System

Based on the thermal network method and heat transfer theory, a temperature field simulation model of complicated thermal analysis system was established by Matlab Simulink. Based on the model, a steady-state temperature field of a helicopter tail reducer was calculated in the normal lubrication. The model is more accurate and reliable than the traditional algorithm. Meanwhile, the model can calculate the time-varying process of the temperature field, corresponding to the transient temperature field.

scholarly journals Analysis of Temperature Characteristics of High-speed Rail Bearings based on Dynamics Model and Thermal Network Method

2021 ◽  
Author(s):  
Bao-sen Wang ◽  
Yongqiang Liu ◽  
Bin Zhang
Keyword(s):  
High Speed ◽  
Contact Point ◽  
Outer Ring ◽  
Dynamics Model ◽  
Temperature Characteristics ◽  
Thermal Network ◽  
Network Method ◽  
High Speed Trains ◽  
Ring Faults ◽  
Thermal Network Method

Abstract This paper establishes a dynamics model of the axle box bearing of high-speed trains. The model can obtain contact force and its change law. Between rollers and raceway when the bearing contains outer ring faults, inner ring faults, and rolling element faults. Based on the model, the thermal network method is introduced to study the temperature characteristics of axle box bearings of high-speed trains. In this model, the bearing can be divided into some isothermal nodes. The heat generation, conduction, and dispersion of these isothermal nodes can be solved. The results show that the temperature of the contact point between the outer ring raceway and the rolling elements is the highest. By analyzing the relationship between the node and the speed and fault size, it is obtained that the higher the speed, the higher the node temperature. When the fault size increases, the node temperature first increases and then decreases.

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