Simulation and experimental research on electromagnetic radiation from suspended permanent magnetic levitation train

• Published in: International journal of applied electromagnetics and mechanics Vol. 70; no. 2; pp. 129 - 147
• Main Authors: Wang, Yongchao, Pang, Qishou, Fan, Kuangang, Tan, Wengang
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.10.2022; Sage Publications Ltd
• Subjects: Electromagnetic radiation; Finite element method; Magnetic fields; Magnetic flux; Magnetic levitation; Magnetic levitation railways; Magnetism; Modules; Pedestrians; Permanent magnets; Radiation; Rail transportation; Railroad transportation; halbach array orbits; finite element simulation; Permanent magnetic suspension; orbital magnetic field
• ISSN: 1383-5416; 1875-8800
• DOI: 10.3233/JAE-210218

With the continuous development and innovation in the field of global magnetic levitation technology, the suspended permanent magnet maglev rail transit system has emerged. At present, no mature relevant technical standard references are available in the world. To study the electromagnetic radiation problem of the permanent magnet maglev train system, we use the finite element method to simulate and analyze the Halbach array track of different combinations of suspension modules, and the six-channel high-precision magnetic field test system is used to test and compare the actual engineering magnetic fields. The results show that the permanent magnet magnetic suspension rail transit system can shield the magnetic energy of the suspension module in the rail beam to reduce the influence of electromagnetic radiation. With the increase in suspension height between the rail and vehicle magnets, the generated magnetic field intensity exhibits a significantly weakening trend. The magnetic field energy of the permanent magnet maglev train is maintained at the centimeter level. Combined with the actual project, the passengers on the train and pedestrians, and residents along the red rail are not affected by the magnetic field intensity of the permanent magnet. This paper provides a theoretical basis for resolving people’s concerns about the electromagnetic radiation of maglev trains, and provides important theoretical support for the development of maglev rail transit.