Permanent magnet-electromagnetic hybrid levitation structure based on parallel magnetic circuit

Abstract

The invention provides a permanent magnet-electromagnetic hybrid suspension structure based on a parallel magnetic circuit, which is characterized in that it includes an iron core, a permanent magnet, a guide rail and a control coil; the iron core includes a first iron core and a second iron core, wherein The first iron core is a C-shaped structure, the lower magnetic pole of the first iron core extends horizontally to the C-shaped opening direction to form a second iron core, and the second iron core cooperates with the lower magnetic pole of the first iron core to form a U-shaped structure; the permanent The magnet is built in the yoke of the second iron core; the guide rail is arranged in parallel directly above the second iron core, and one side of the guide rail is placed between the upper and lower magnetic poles of the first iron core; the control coil surrounds the first The yoke of the iron core regulates the current state of the coil through an external controller. The invention has the advantages of simple structure, easy realization and low energy consumption.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation, in particular to a permanent magnet-electromagnetic hybrid levitation structure based on a parallel magnetic circuit. Background technique [0002] The magnetic levitation system can be divided into two types from the levitation mechanism: electromagnetic levitation (EMS: Electromagnetic Suspension) and electric levitation (EDS: Electrodynamic Suspension), both of which use electromagnetic attraction and electric repulsion to achieve levitation. Among them, the EMS type maglev technology is relatively mature and has achieved a wide range of commercial applications, such as Shanghai high-speed maglev trains and domestic low-speed maglev trains operating or under construction in Changsha, Beijing, Qingyuan and other places. [0003] The levitation electromagnet is one of the core components of the EMS type maglev system. It is generally composed of an iron core and a coil. The iron core...

AI Technical Summary

Problems solved by technology

The hybrid levitation with magnetic circuits connected in series has the advantages of simple structure, easy realization, good mechanical properties, and high material utilization rate. Increased flux leakage and risk of accelerated or even complete demagnetization of permanent magnets

In addition, in order to avoid the dangerous situation where the permanent magnet and the guide rail are attracted to each other, the hybrid levitation of the magnetic circuit in series generally requires its electric excitation coil to have the ability to completely offset the permanent magnetic field to ensure the safety of the levitation system, which leads to the design of the control coil. Larger and heavier, affecting the buoyancy-to-weight ratio and suspension performance of the entire system

Images