A Study on Mechanical Characteristics for Induction Motor of Rolling Stock

2006 ◽  
Author(s):  
Young-jae Han ◽  
Seog-won Kim ◽  
Ki-hwan Kim ◽  
Tae-hyoung Lee ◽  
Hun-mo Koo
Keyword(s):  
Induction Motor ◽  
Mechanical Characteristics ◽  
Rolling Stock

scholarly journals Improving the energy efficiency of electric drives for auxiliary units of traction rolling stock

2021 ◽  
Vol 2131 (4) ◽  
pp. 042085
Author(s):  
T S Titova ◽  
A M Evstaf’ev ◽  
A A Pugachev
Keyword(s):  
Energy Efficiency ◽  
Control Systems ◽  
Induction Motor ◽  
Induction Machine ◽  
Rolling Stock ◽  
Electric Drives ◽  
Operating Modes ◽  
Stator Current ◽  
Power Loss Reduction ◽  
Rotor Winding

Abstract The review of technical solutions and schematic characteristics of auxiliary drives for traction vehicles has shown that the most rational variant is an electric drive with an induction machine. Given the operating modes of the auxiliary drives and the share of their power consumption in the total locomotive power, the task of using scalar control systems for induction machines becomes relevant. Based on a mathematical model describing the dynamic energy conversion processes in the T-shape substitution circuit of an induction motor, taking into account stator steel losses and current displacement effects in the rotor winding and saturation along the main magnetic path, possibilities for reducing stator current have been investigated. In order to improve the energy efficiency of electric drives two variants of control system have been proposed. One based on search method of self-tuning to the stator current minimum and the other - on maintaining the power factor of induction motor at the level that ensures equality of active and reactive components of stator current. The hardware and software requirements for implementing control systems have been analysed. Modelling using Matlab has shown that both control systems work - power loss reduction can be as low as 50% and as high as 60% in certain modes.

Mechanical Characteristics of Concrete Ballastless Track on the Track Traffic of Linear Induction Motor

2006 ◽  
Vol 302-303 ◽  
pp. 725-0
Author(s):  
Gao Liang ◽  
Ke Ming Yin ◽  
Yin Hui
Keyword(s):  
Induction Motor ◽  
Mechanical Characteristics ◽  
Beam Theory ◽  
Internal Force ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Operating Modes ◽  
Ballastless Track ◽  
Elastic Foundation Beam

In this paper, based on the elastic foundation beam theory, the influence rules of every combination of loads and operating modes for ballastless track of Linear Induction Motor (LIM) track traffic are studied. In addition, according to the construction character of prefabrication and cast-in-situ, the rules of how construction influences the mechanical characteristics of the ballastless track structure are given. On the basis of synthetical analysis of the distribution rules of ballastless track’s internal force, some appropriate suggestions for design and construction are put forward.

Features of calculation of characteristics of the compensated induction motor in the matlab simulink software environment

2021 ◽  
pp. 5-17
Author(s):  
R. Chuienko ◽  
Keyword(s):  
Mathematical Model ◽  
Energy Efficiency ◽  
Induction Motor ◽  
Mechanical Characteristics ◽  
Reactive Power ◽  
Induction Motors ◽  
Reactive Power Compensation ◽  
Software Environment ◽  
Electric Circuits ◽  
Internal Capacitive Compensation

An asynchronous electric motor with a short-circuited rotor is the most common means of converting electrical energy into mechanical energy in the electric drive of working machines in industry and agriculture. Modern methods of increasing the energy efficiency of induction motors with short-circuited rotor are aimed at finding with the help of computer technology the optimal solutions in the processes of their design, production and operation using new high-performance materials in machines. Such methods do not change the physical processes occurring in the induction motor, ie are passive. However, despite numerous improvements and scientific achievements, technical and economic indicators of induction motors still do not meet modern energy requirements. It is necessary to use ways to increase the energy efficiency of induction motors while maintaining their simplicity and reliability. It is proposed to use internal capacitive compensation of reactive power of induction motors. The aim of the research is to develop a mathematical model of an induction motor with internal capacitive reactive power compensation in the MathLab Simulink software environment for the calculation of operating and mechanical characteristics. A mathematical model of an induction motor with internal capacitive reactive power compensation in the MathLab Simulink software environment using the theory of electric circuits has been developed. The developed mathematical model allows to study the working and mechanical characteristics of an induction motor with internal capacitive compensation of reactive power. Numerical researches of characteristics of the induction motor with internal capacitive compensation of reactive power are carried out and their comparison with corresponding characteristics of the basic induction motor is carried out.

scholarly journals Starting forces of the traction linear induction motor with adjustable resistance of the short-circuited winding of the secondary element

2021 ◽  
Vol 7 (2) ◽  
pp. 87-96
Author(s):  
Vladimir A. Solomin ◽  
Andrei V. Solomin ◽  
Anastasia A. Chekhova
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Rolling Stock ◽  
Traction Forces ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Urgent Task ◽  
Traction Drives ◽  
Secondary Element ◽  
Linear Induction Motors

Background: Development and research of linear traction drives for Maglev transport is an urgent task. Linear induction motors can be used as traction machines for advanced rolling stock. Aim: Study of the starting characteristics of an adjustable traction linear induction motor with variable resistance by a short-circuited winding of the secondary element. Methods: Theoretically, relations were obtained for calculating the traction starting forces of an adjustable linear induction motor with various designs of a short-circuited winding of the secondary element. Results: Based on the obtained ratios, the calculations of the starting traction forces of linear induction motors intended for use in promising modes of transport were performed. Conclusion: The results of calculating the starting traction forces of adjustable linear induction motors make it possible to reasonably select the modes of starting the motor depending on the design of the secondary winding.

scholarly journals CALCULATION OF TRACTION AND ENERGY CHARACTERISTICS ELECTRIC ROLLING STOCK WITH ASYNCHRONOUS TRACTION ELECTRIC DRIVE

2021 ◽  
Vol 1 (38) ◽  
pp. 141-152
Author(s):  
I. Riabov ◽  
S. Sapronova ◽  
V. Tkachenko ◽  
S. Goolak ◽  
R. Keršys
Keyword(s):  
Induction Motor ◽  
Electric Drive ◽  
Rolling Stock ◽  
Power Losses ◽  
Traction Drive ◽  
Energy Characteristics ◽  
Asynchronous Electric Drive ◽  
Traction Electric Drive ◽  
Electric Rolling Stock ◽  
Higher Harmonic

The issue of determining the traction and energy characteristics of electric rolling stock with asynchronous traction drive is considered. It is noted that such rolling stock can work at any point of the traction area, resulting in the need to determine the characteristics of the rolling stock for the entire traction area. The calculation of the characteristics of the traction induction motor, which are the basis for determining the traction and energy characteristics of the electric rolling stock, is considered in detail. A procedure based on the calculation of the replacement circuit of an induction motor is proposed. The calculation of power losses due to higher harmonic voltages and currents is considered. An example of calculation of traction and energy characteristics of an DC electric shunting locomotive with a traction asynchronous electric drive is given.

Analytic Evaluation of HTS Induction Motor for Electric Rolling Stock

2011 ◽  
Vol 21 (3) ◽  
pp. 1123-1126 ◽  
Author(s):  
T. Konishi ◽  
T. Nakamura ◽  
T. Nishimura ◽  
N. Amemiya
Keyword(s):  
Induction Motor ◽  
Rolling Stock ◽  
Analytic Evaluation ◽  
Electric Rolling Stock
Sign in / Sign up

Export Citation Format

Share Document