scholarly journals Energy Saving Technologies for Railway Traction Motors

2010 ◽  
Vol 5 (3) ◽  
pp. 278-284 ◽  
Author(s):  
Koichi Matsuoka ◽  
Minoru Kondo
Keyword(s):  
Energy Saving ◽  
Traction Motors ◽  
Railway Traction

A mechatronic approach for effective wheel slip control in railway traction

2008 ◽  
Vol 223 (3) ◽  
pp. 295-304 ◽  
Author(s):  
T X Mei ◽  
J H Yu ◽  
D A Wilson
Keyword(s):  
Dynamic Properties ◽  
Wheel Slip ◽  
Dynamic Interactions ◽  
Contact Conditions ◽  
New Approach ◽  
Traction Motors ◽  
Control Schemes ◽  
Railway Traction ◽  
Braking Control ◽  
Adhesion Control

This article proposes a radically new approach for the detection of wheel slip/slide and re-adhesion control of AC traction motors in railway applications, which provides an important alternative and advantageous technique in traction/braking control systems to maximize the use of adhesion in poor contact conditions. The proposed concept explores the variations in the wheelset dynamic properties caused by the condition changes at the wheel—rail contact, and detects and controls the slip conditions from the dynamic behaviour of a wheelset, indirectly. All the dynamic motions of rail wheelset, which are closely related to wheel—rail contact mechanics, are included in the study; the influence of contact conditions on the relevant modes is assessed, which is essential in the development of a mechatronic solution based on dynamic interactions. This is different from the more general approaches in many other studies on traction controls where the inclusion of only wheelset rotation and longitudinal motions are considered as sufficient. The development of the slip detection and re-adhesion control schemes is presented and comprehensive simulation results are produced to support the proposed idea.

Analysis of Water Cooled Permanent Magnet Traction Motors Using 3D Fluent and Thermal Field

2013 ◽  
Vol 325-326 ◽  
pp. 375-378 ◽  
Author(s):  
Ping Chen ◽  
Qi Ping Shen ◽  
Xue Yan Han ◽  
Ren Yuan Tang ◽  
Ke Yan Xin
Keyword(s):  
Heat Transfer ◽  
Thermal Field ◽  
Tunnel Wall ◽  
Fem Model ◽  
Traction Motor ◽  
3D Finite Element ◽  
Traction Motors ◽  
Railway Traction ◽  
3D Finite Element Method ◽  
The Heat Transfer Coefficient

This paper gives a method to calculate the temperature rise of the water cooled PM railway traction motor using 3D fluent and thermal field. Building a 3D Finite Element Method (FEM) model of 20kW PM synchronous traction motor, the heat transfer coefficient of each tunnel wall is calculated by fluent field, and then the temperature distribution is got from thermal field. Compared with the experimentation, the precision of this method is verified and some conclusions are obtained.

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