Design and Construction of a Mini Magnetic Levitation Train

2019 ◽  
Vol 891 ◽  
pp. 253-262
Author(s):  
Sakhon Woothipatanapan ◽  
Poonsri Wannakarn
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
The Body ◽  
Test Results ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Drive Speed ◽  
The Magnetic Field ◽  
Design And Construction

This article presents the design and construction of a mini magnetic levitation train. The design of the train is based on the theory of 3-phase Linear Induction Motor (LIM). The train consists of two main sections. The first part is the linear induction motor, which is the part that drives the train to move. The second part is the magnetic field winding, which is the part that raises the body of the train to float over the rails. Such train can move forward/backward in the same principle as forward/reverse rotation control of 3-phase induction motors. For that reason, this research controls the forward/backward movement of the train with a magnetic contactor set by using the same circuit as the control of the rotation of the 3-phase induction motor. The designed train can lift 1 mm above the rails and move within a distance of 1.48 m along the length of the rails. The test results showed drive voltage, drive force, average time and drive speed of the train. From the details and results of this article can be used as a guide to create a larger magnetic levitation train, which can be used more effectively.

scholarly journals New technology for manufacturing inductors of linear induction motors for magnetic-levitation transport

2018 ◽  
Vol 4 (3 suppl. 1) ◽  
pp. 351-364
Author(s):  
Vladimir A. Solomin ◽  
Andrei V. Solomin ◽  
Nadezda A. Trubitsina ◽  
Larisa L. Zamchina ◽  
Anastasia A. Chekhova
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
New Technology ◽  
Manufacturing Technology ◽  
Magnetic Suspension ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Linear Induction Motors

Abstract. Background: Significant economic growth in many countries of the world can contribute to an increase in the speed of movement of modern and fundamentally new vehicles. This will increase the turnover of goods during the transportation of goods, revive international trade, increase the comfort of passengers and reduce their travel time. Aim: The solution of this problem is the development and wide application of high-speed magnetic-levitation transport (HSMLT) with linear traction engines. It is promising to use linear induction motors (LIM) for the HSMLT drive, which can have various design versions. Linear induction motors come with a longitudinal, transverse and longitudinal-transverse closure of the magnetic flux. LIM inductors can be installed on both high-speed transport crews and in the HSMLT track structure, as it was done in the People’s Republic of China, where express trains on magnetic suspension connect Shanghai with the airport and reliably operate for more than 10 years. The main elements of the inductor of a linear induction motor are a magnetic core (ferromagnetic core) a multiphase (usually three-phase) winding. With the development of high-speed magnetic-levitation transport, the issues of improving the manufacturing technology of various HSMLT devices, including the methods for producing inductors of linear induction motors, will become increasingly relevant. Traditionally, LIM inductors are assembled from pre-manufactured individual parts. Methods: An integral technology for manufacturing inductors of linear induction motors for high-speed magnetic-levitation transport is proposed and considered by the method of spraying materials onto a substrate through replaceable stencils. The new technology eliminates the alternate manufacture of individual assemblies and parts and their subsequent assembly to obtain a finished product. A method for determining the size of stencils for manufacturing one of the inductor variants of a linear induction motor is proposed as an example. Conclusion: Integral manufacturing technology is promising for the creation of high-speed magnetic-levitation transport.

scholarly journals Traction linear induction motor of urban MAGLEV transport

2020 ◽  
Vol 6 (1) ◽  
pp. 120-128
Author(s):  
Anastasia A. Chekhova ◽  
Andrei V. Solomin
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
Transport Infrastructure ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Traction Motors ◽  
New Type ◽  
Secondary Element ◽  
Linear Induction Motors

Background: Currently, great attention is paid to the problem of increasing the efficiency of transport in cities. The use of urban Maglev transport with linear traction motors will improve the transport infrastructure of megacities. Aim: The use of magnetic-levitation transport with linear induction motors (LIM) is proposed. It is proposed to use traction linear induction motors (LIM) for urban Maglev transport, increasing the safety of a new type of transport. Materials and Methods: In this work, the design of a linear traction induction motor was proposed, which can increase lateral stabilization forces and safety of traffic by performing the lateral parts of the secondary element of a linear induction motor in the form of short-circuited windings. Results: Improving efforts of the lateral stabilization improve crew safety.

scholarly journals Adjustable Squirrel-Cage Linear Induction Motor for Magnetic Levitation Transport

2017 ◽  
Vol 3 (4) ◽  
pp. 127-149 ◽  
Author(s):  
Vladimir A Solomin ◽  
Anastasia A Bichilova ◽  
Larisa L Zamshina ◽  
Nadezhda A Trybitsina
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
Frequency Control ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Squirrel Cage ◽  
Secondary Element ◽  
Linear Induction Motors

The article deals with linear induction motor (LIM) with a squirrel-cage winding of the secondary element (SE), which functions as the armature of the machine. Linear location of squirrel-cage winding of the secondary element of LIM allowed suggesting a number of options for the regulation of the winding resistance of SE. Objective. Development and research of LIM with adjustable winding resistance of the secondary element for magnetic levitation transport, and the study of the properties of adjustable LIM. At the modern level of development of the electrical engineering, asynchronous electric drive and magnetic levitation transport, the primary method of changing the frequency rotation of motor and speed of linear motion of high-speed transport vehicles is frequency control. Frequency control allows changing the frequency of rotation of the machine and linear speed of LIM smoothly and in broad diapason. The high cost of static electronic converters of high power limits the large-scale application of frequency control. The increase of the current frequency also leads to lower torque and traction. Results. According to the authors, the application of the adjustable linear induction motors with variable resistances of short-circuited windings of the secondary elements will allow to expand the range of control of LIM, intended for high-speed magnetic levitation transport with the realisation of large traction, including the start (starting the vehicle) by means of current displacement in the groove of the secondary element of the LIM. Conclusion. The linear induction motors of this type, as well as the calculation of the magnetic field in the groove of the secondary element, and evaluation of the influence of the current displacement on the starting and controlling features of the machine are considered.

scholarly journals A Study on Improvement of Operation Efficiency of Magnetic Levitation Train Using Linear Induction Motor

2016 ◽  
Vol 9 (2) ◽  
pp. 41-45 ◽  
Author(s):  
Sang Uk Park ◽  
Chan Yong Zun ◽  
Doh-Young Park ◽  
Jaewon Lim ◽  
Hyung Soo Mok
Keyword(s):  
Induction Motor ◽  
Magnetic Levitation ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Operation Efficiency

scholarly journals Linear Induction Motors without Longitudinal Edge Effect

2019 ◽  
Vol 5 (2) ◽  
pp. 60-69 ◽  
Author(s):  
Vladimir A. Solomin ◽  
Andrei V. Solomin ◽  
Anastasia A. Chekhova ◽  
Larisa L. Zamchina ◽  
Nadezda A. Trubitsina
Keyword(s):  
Edge Effect ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
Track Structure ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
High Speeds ◽  
Longitudinal Edge ◽  
Secondary Element ◽  
Linear Induction Motors

Background: At high speeds of motion of the magnetic-levitation transport (MLT), linear induction motors (LIM) have a secondary longitudinal edge effect (SLEE). SLEE occurs when magnetic field of inductor interacts with the currents of the secondary element (SE) outside the MLT crew. SLEE reduces the efficiency of traction LIM. Therefore, the task of reducing the influence of SLEE is relevant. Aim: Development and research of a linear induction motor without a secondary longitudinal edge effect. Methods: To achieve this aim, new designs of linear induction motors have been proposed, which do not have a SLEE. The secondary element of the LIM (track structure of the MLT) is made of cylindrical conductive rods installed with the possibility of rotation. Traction LIM of the MLT equipped with two brushes that close the rods of the SE within the length of the inductor. When the MLT crew moves, the rods outside the inductor are not closed by brushes and there is no current in them. There will be no SLEE. Another method to solve this problem is using reed switches to close and open the rods of the secondary element. Results: The possibility of increasing the efficiency of the LIM has been achieved.

THE DEVELOPMENT OF A LINEAR INDUCTION MOTOR AS A MARINE PROPULSION SYSTEM

2016 ◽  
Vol 158 (B1) ◽  
Author(s):  
M Geor ◽  
S Hooper ◽  
S Tamakai ◽  
A P R Taylor
Keyword(s):  
Induction Motor ◽  
Propulsion System ◽  
Secondary Reaction ◽  
Test Results ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Speed Test ◽  
Working Model ◽  
Marine Propulsion ◽  
Marine Propulsion System

The Linear Induction Motor (LIM) has been employed as an actuator in conveyers and more recently aircraft launches, and some work has been done on LIMs with a curved secondary reaction plate. This paper presents a working model of a marinised LIM-boat system, with underwater stator operating the hull of a boat which acts as reaction plate. The LIM stator is shown to propel the boat through the water, and that with certain reaction plate metals it will track over the stator coils and therefore be controllable in both direction and speed. Test results for differing coils and reaction plate combinations are provided.

The Proactive Desk: A New Haptic Display System for a Digital Desk Using a 2-DOF Linear Induction Motor

2004 ◽  
Vol 13 (2) ◽  
pp. 146-163 ◽  
Author(s):  
Haruo Noma ◽  
Shunsuke Yoshida ◽  
Yasuyuki Yanagida ◽  
Nobuji Tetsutani
Keyword(s):  
Induction Motor ◽  
Haptic Feedback ◽  
Induction Motors ◽  
Physical Object ◽  
Haptic Display ◽  
Display System ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Physical Objects ◽  
First Time

The Proactive Desk is a new digital desk with haptic feedback. The concept of a digital desk was proposed by Wellner in 1991 for the first time. A typical digital desk enables a user to seamlessly handle both digital and physical objects on the desk with a common GUI standard. The user, however, handles them as virtual GUI objects. Our Proactive Desk allows the user to handle both digital and physical objects on a digital desk with a realistic feeling. In the Proactive Desk, two linear induction motors are equipped to generate an omnidirectional translational force on the user's hand or on a physical object on the desk without any mechanical links or wires, thereby preserving the advantages of the digital desk. In this article, we first discuss applications of a digital desk with haptic feedback; then we mention the design and structure of the first trial Proactive Desk, and its performance.

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