Electromagnetic train

Abstract

The invention relates to an electromagnetic train. The electromagnetic train comprises a line rail, a driving system, a train body, a guiding system and an electromagnetic supporting system. A plurality of long stators are mounted on two sides of the line rail along a driving direction; the driving system comprises the long stators, and the train body comprises train body supporting racks and compartments; the guiding system comprises guiding magnets, guiding rails, guiding air gap sensors and guiding controllers; the electromagnetic supporting system comprises rotors, rotor controllers and train body load sensors, wherein the rotors are located below the long stators, and a small air gap is formed between each rotor and the corresponding long stator and ranges from 2 mm to 6 mm; and the rotor controllers adjust the exciting currents of the rotors in real time, so that the electromagnetic forces generated by the rotors are equal to the train body load. The train body is in contact with the line rail through a supporting skid at the bottom of the train body. According to the electromagnetic train provided by the invention, the air gap sensors are not needed to be suspended, so that the electromagnetic train is small in power consumption, light in self weight, low in cost and simple to control and runs stably.

Description

technical field [0001] The invention relates to a train, in particular to an electromagnetic train. Background technique [0002] Electromagnetic levitation trains have the advantage of being frictionless and have been commercially applied in Shanghai. However, when the maglev train is running, the suspension gap between the stator and rotor should generally be kept at 8-10mm, and the air gap when it is parked is larger, about 15-20mm. To maintain such a suspension air gap, the excitation of the suspension magnet (rotor) The current is bound to be large, resulting in a large power consumption of the levitating magnet and a large self-weight, resulting in a low payload of the vehicle. More importantly, the maglev system is a strongly coupled, inherently nonlinear, and open-loop unstable system. During the levitation process of the train such as floating, landing, and straight running, an air gap sensor is required to monitor the size of the air gap in real time, and its cont...

AI Technical Summary

Problems solved by technology

However, when the maglev train is running, the suspension gap between the stator and rotor should generally be kept at 8-10mm, and the air gap when it is parked is larger, about 15-20mm. To maintain such a suspension air gap, the excitation of the suspension magnet (rotor) The current is bound to be large, resulting in a large power consumption of the levitating magnet and a heavy weight, resulting in a low payload of the vehicle

More importantly, the maglev system is a strongly coupled, inherently nonlinear, and open-loop unstable system. During the levitation process of the train such as floating, landing, and straight running, an air gap sensor is required to monitor the size of the air gap in real time, and its control is complicated. , difficult to realize, thus limiting the popularization and use of maglev trains

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