Title :
Numerical analysis of eddy current in the EMS-Maglev system
Author :
Du, Jian ; Ohsaki, Hiroyuki
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ., Japan
Abstract :
EMS (electromagnetic suspension) is one of the basic types of noncontact Maglev systems, and commonly known as "attractive levitation". In an EMS Maglev system, while the train is running over the rail, certain eddy current is induced in the rail surface. In particular, when an EMS Maglev system originally designed for a low-speed application like HSST is used for a higher-speed operation of about 200 km/h, the influence of the eddy current becomes important. This paper reports numerical analysis of such three-dimensional eddy current problems in the EMS-Maglev system with nonlinear magnetic properties of the steel rails taken into account. The influence of the eddy current on levitation and propulsion forces is studied.
Keywords :
eddy currents; electromagnetic forces; magnetic levitation; numerical analysis; rapid transit systems; Maglev systems; electromagnetic suspension; high speed surface transport; levitation; nonlinear magnetic property; numerical analysis; propulsion force; steel rails; three-dimensional eddy current; Eddy currents; Electromagnets; Magnetic levitation; Magnets; Medical services; Numerical analysis; Numerical models; Propulsion; Rails; Steel;
Conference_Titel :
Electrical Machines and Systems, 2003. ICEMS 2003. Sixth International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
7-5062-6210-X
