Combined-type suspension electromagnet for medium-low-speed maglev train and manufacturing method of combined-type suspension electromagnet

Abstract

Disclosed are a combined-type suspension electromagnet for a medium-low-speed maglev train and a manufacturing method of the combined-type suspension electromagnet. The combined-type suspension electromagnet structurally comprises at least one permanent-magnetic suspension component and more than one electromagnetic suspension component and/or hybrid suspension component, and the permanent-magnetic suspension components and the electromagnetic suspension components and/or hybrid suspension components are combined and mounted together through a shared iron core electrode plate. The method includes the following steps: (1), determining structure sizes of permanent magnets in the permanent-magnetic suspension components; (2), designing and determining number of turns of excitation coils and the structure sizes of permanent magnets in the electromagnetic suspension components and/or the hybrid suspension components according to big gap working conditions of normal suspension and fluctuation of the train. The combined-type suspension electromagnet has the advantages of simple structure, low cost, high reliability, convenience for maintaining, low suspension energy consumption and good suspension controlling and adjusting performance.

Description

technical field [0001] The invention mainly relates to the field of medium and low speed maglev trains, in particular to a combined suspension electromagnet suitable for medium and low speed maglev trains and a manufacturing method thereof. Background technique [0002] The medium and low-speed maglev train realizes non-contact support between the vehicle and the track through electromagnetic attraction, and adopts linear induction motor traction technology. Compared with other urban rail transit (such as subway, light rail, etc.), medium and low-speed maglev train has the advantages of low noise, strong climbing ability, and small turning radius. It is a public transportation tool that can be developed in future cities or suburbs. [0003] Traditional medium and low-speed maglev trains adopt electromagnetic levitation technology, and the vehicle-mounted levitation electromagnet is composed of multiple electromagnetic levitation components 1 in a certain way, such as figure...

AI Technical Summary

Problems solved by technology

For the magnetic field generated by the electromagnet coil in the hybrid suspension assembly 2, since the permanent magnet is located in the main working magnetic circuit, the length along the magnetic field direction of the permanent magnet (that is, the thickness of the permanent magnet) is equivalent to the air gap for the coil current ; and in the case of the same suspension force, the larger the air gap, the larger the current of the electric excitation coil is required, the lower the working efficiency is, and the greater the coil heat is.

The introduction of permanent magnets, on the one hand, provides a part of the levitation magnetic field, but on the other hand, it greatly weakens the effect of the magnetic field generated by the electric excitation coil current, which increases the difficulty of vehicle levitation control, resulting in the failure of the vehicle levitation control power supply DC / DC equipment. The capacity adjustment ability should be strengthened, thus partially offsetting the energy-saving advantages of the vehicle suspension using the hybrid suspension structure compared with the traditional pure electromagnetic suspension structure

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