A Variable Permanent Magnet Hybrid Electromagnetic Levitation System with Redundant Control

Abstract

The present invention is to provide a variable permanent magnet hybrid electromagnetic levitation system with redundant control, including guide rails, levitation coils, inner electromagnet cores, fastening screws, right-angle connecting plates, movable permanent magnets, outer electromagnet cores, based on Current suspension controller, suspension air gap sensor and displacement-based suspension sensor; the guide rail is made of soft magnetic material, F-shaped structure; the inner and outer electromagnet cores are made of soft magnetic silicon steel sheet materials, which are combined with movable permanent magnets It constitutes a U-shaped structure iron core, and the inner electromagnet core and the outer electromagnet core are fixedly connected by right-angle connecting plates and fastening screws; the movable permanent magnet is located in the middle of the U-shaped structure iron core and can be driven to move up and down; the suspension coil Wound on the inner or outer solenoid core; the displacement-based levitation controller can be used as a system-independent levitation controller. The invention has the characteristics of low power consumption, large suspension air gap and redundant control, and is suitable for the electromagnetic suspension system of the maglev train.

Description

technical field [0001] The invention relates to an electromagnetic suspension system, in particular to an electromagnetic suspension system for a maglev train. Background technique [0002] The maglev train is a new type of non-contact ground rail transportation, which cancels the wheels that traditional vehicles rely on for transmission, thereby realizing non-adhesive traction and non-contact operation. Therefore, it has the characteristics of low noise, low vibration, wide speed range, fast acceleration and deceleration, strong climbing ability, and low maintenance cost. It is also known as an ecologically pure land green vehicle. For the conventional maglev train, the levitation force is all provided by the electromagnet. Since the levitation coil has a certain resistance, the levitation needs to consume a lot of power, so the levitation air gap should not be too large, generally about 8~10mm, otherwise the levitation power It increases proportional to the square of the ...

AI Technical Summary

Problems solved by technology

Therefore, due to the energy consumption problem during operation, the further increase of the suspension air gap is affected.

On the other hand, due to the small suspension air gap, the train has high requirements on the accuracy of the track, and the error is generally within 2mm, which increases the cost of the track

In addition, the current magnetic levitation system only controls the levitation air gap by adjusting the current of the levitation coil. When any coil is damaged or the drive controller fails, the levitation unit will not work, resulting in the failure of the entire levitation module.

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