Interaction between propulsion and levitation system in the HTSC-permanent magnet conveyance system

• Published in: Physica. C, Superconductivity Superconductivity, 2010-11, Vol.470 (20), p.1768-1771
• Main Authors: Ohashi, S., Nishio, R., Hashikawa, T.
• Format: Article
• Language: English
• Subjects: Applied sciences; Conveyance system; Electronics; Exact sciences and technology; Hybrid; Permanent magnet; Pinning force; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Superconducting devices
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2010.05.203

The magnetically levitated conveyance system has been developed. Pinning force of high temperature bulk superconductors (HTSC) are used for the levitation and the guidance of the carrier. The magnetic rail is set on the ground, and flux from the magnetic rail is pinned by HTSCs on the carrier body. To increase the load weight, the repulsive force of the permanent magnet is introduced. The hybrid levitation system is composed. The repulsive force by the permanent magnet between the load stage on the carrier and the magnetic rail on the ground is used to support the load weight. As the load stage is connected to the carrier body by the linear sliders, the mass of the load weight does not act on the carrier body. The interaction between the electromagnet and the permanent magnet under the load stage generates the propulsion force. The electromagnet is constructed by the air core coils, and excited only when the load stage passes. The interaction between the propulsion and the levitation system is investigated. Disturbance of the propulsion system on the levitation and the guidance force is measured. The results show the influence of the propulsion electromagnet on the pinning force is little, and this propulsion system works effectively.