Levitation traction integrated system for high-efficiency magnetic-levitation train

Abstract

The invention discloses a levitation traction integrated system for high-efficiency magnetic-levitation train. The levitation traction integrated system comprises a levitation traction controller, a linear induction machine, a linear induction machine supporting beam and a power supply source. The linear induction machine comprises a secondary linear induction machine and a primary linear induction machine. The levitation traction controller, the primary linear induction machine and the power supply source are fixed to a vehicle body. The primary linear induction machine is below a rail. The secondary linear induction machine is flatly paved along the rail. The invention is the levitation traction integrated system for high-efficiency magnetic-levitation train that has a simple and compact structure, low cost, a simple operating principle and good energy saving effect and is conveniently controlled.

Description

Technical field [0001] The invention mainly relates to the field of magnetic levitation vehicles, and particularly refers to a high-efficiency levitation traction integrated system for maglev trains. Background technique [0002] At present, maglev trains, as a future green transportation tool with broad application prospects, are increasingly being promoted and applied. Divided by speed, maglev trains are divided into high-speed and medium-low-speed maglev trains, of which medium- and low-speed maglev trains refer to the speed of ≤150km / h and are suitable for transportation in cities or suburbs. Traditionally, medium and low speed maglev trains use U-shaped levitation electromagnets to levitate the car body, and linear induction motor traction methods, such as figure 1 As shown, the levitation electromagnet 10 is installed on the car body 2, the F-shaped track includes a steel sleeper 8 and a rail beam 9, and an air spring 6 is provided between the car body 2 and the bogie modu...

AI Technical Summary

Problems solved by technology

In this traditional structure, different independent systems are used for train suspension and traction. The disadvantages are: (1) there is resistance in the suspension electromagnet 10 coils, and there is loss after passing current. The ratio is about 0.8kw / ton; (2) The linear induction motor is only used for traction. When it is working, the normal electromagnetic force generated by it will interfere with the suspension of the train; in most cases, it increases the suspension burden; (3) The train When stationary and running, in order to ensure a suspension air gap of 8 mm, the propulsion linear induction motor has a relatively large air gap of 11 mm, and the motor has low working efficiency and low power factor; (4) When the train is running, it is necessary to ensure both suspension and traction. Such an air gap greatly improves the manufacturing requirements of vehicles and tracks, and increases the construction cost; (5) Suspension and traction adopt two independent systems, with complex structure, more equipment, and increased cost

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