R&D of No-Insulation HTS Magnets Using 2G Wires in a Prototype for Maglev Applications

Abstract

Superconducting magnetic levitation (Maglev) is developing rapidly in recent decades. Compared to traditional railways, superconducting Maglev is superior in aspects such as faster speed, less pollution, and safer operation. The development of second generation (2G) high-temperature superconducting (HTS) wires, which have higher in-field critical current density and mechanical strength, has also improved the design performance of the superconducting Maglev. This paper presents design and optimization processes of no-insulation magnets using 2G HTS wires for a prototype of linear propulsion system in the Maglev. According to the design results, one of the coils in the magnets are manufactured for routine test including <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">I_C</i> measurement and Maglev-related tests including field quality comparison, charging characters like delay and loss, over-MMF test and mechanical vibration test simulating the running conditions of the Maglev. The coil has no degradations or obvious changes of performances after the tests. And the test results meet the expected requirements of the prototype.