The authors describe a superconducting linear synchronous motor (SLSM) for a high capacity urban transport system (106 passengers/day/line) able to climb a hill grade of 12%. The motor is composed of 26 poles installed below one wagon and is sufficient for traction of six wagons of 330 passengers each. The pole coil is a segmented race-track type 23 cm long, 140 cm wide, and 11.2 cm high. The conductor is composed of 14 transposed NbTi wires phi 0.7 mm each, 5.04 mm*1.20 mm cross-section and Cu/SC ratio of 1.35. The current leads are made of high-Tc superconductor (melt textured growth YBa2Cu3O7-x). These leads allow a pool cooling cryostat (2400 and of LHe) without an on-board refrigerator, and with one year holding time. The quench protection is made with cross-quench heater resistance placed within each coil. The limiting factor is the critical field of the NbTi and its substitution by Nb3Sn should reduce the cost by a factor of 40%. Final cost of the SLSM is expected to be in the US$600,000 range. Due to the low speed (100 km/h), the suspension is made on conventional bus type tyres
Superconducting linear synchronous motor for urban transport system
Ein supraleitender Linearsynchronmotor für ein städtisches Transportsystem
1995
4 Seiten, 5 Quellen
Aufsatz (Konferenz)
Englisch
Transport , Stadt , Elektroantrieb , Hochtemperatursupraleiter , supraleitende Wicklung , supraleitendes Bauelement , Linearmotor , Synchronmotor , Elektrofahrzeug , Fahrmotor , Metalloxid , Kupferverbindung , Supraleiter , Hochtemperatur , Bauelement , Haltezeit , Yttriumbariumcuprat , Kraftschluss
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