摘要
The permanent magnet electromagnetic hybridmagnet (PEHM) has the advantages of low energy consumptionand a large suspension air gap. In this study, an unbalancedPEHM structure is proposed, which combines the advantages ofthe previous hybrid magnet structure. First, by establishing themagnetic circuit model of the new hybrid magnet structure, theinfluence of magnetic field distribution on the working magneticcircuit of the magnet is analyzed, and the method of magneticforce correction calculation of the new structure magnet isgiven. Then, the validity of the magnetic calculation method isverified by the 3D finite element method (FEM). Furthermore, theaverage suspension power force ratio is used as the optimizationgoal, and the system parameters of the hybrid magnet under aworking air gap of 6–10 mm and a load condition of 15000–20000 N are optimized by a genetic algorithm. Compared withthe previous hybrid magnet, the optimized hybrid magnet systemcan maintain lower power consumption under comprehensiveworking conditions.
基金
the Fundamental Research Funds for the Central Universities of China(No.2682017CX050).
作者简介
Corresponding author:Songqi Li,e-mail:lisongqi@swjtu.edu.cn;ORCID:https://orcid.org/0000-0002-0962-5483)received his B.S.degree in Electrical Engineering from Nanjing University of Science and Technology in 2002,and received his M.S.degree in Electrical Engineering from the University of Electronic Science and Technology of China,in 2009 and his Ph.D.in Electromagnetic levitation and superconducting Engineering from Southwest Jiaotong University,in 2016.Currently,he is a lecturer and M.S.student supervisor of the School of Electrical Engineering.His research interests include MAGLEV transportation,Vehicle Dynamics and Control Systems;Liangcheng Cai(ORCID:https://orcid.org/0000-0002-6501-832X)received his B.Sc.degree in Mathematics from Sichuan Normal University,Chengdu,China,in 2006,and his M.Sc.degree in Applied Mathematics and his Ph.D.degree in Control Science and Engineering from Central South University,Changsha,China,in 2008 and 2013,respectively.He is currently a Lecturer in the School of Electrical Engineering,Southwest Jiaotong University,Chengdu,China.His research interests include analysis and control of power system;Kunlun Zhang received his B.S.and M.S.degrees in Electrical Engineering from Southwest Jiaotong University,Chengdu,China,in 1987 and 1990.In 2000,he became a full professor at Southwest Jiaotong University.In addition,he has been the academic leader of the Key Laboratory of Magnetic Suspension Technology and Maglev Vehicles,Ministry of Education.His research interests include the theory of MAGLEV transportation and linear propulsion systems.
