Abstract
We previously investigated the stability of toroidal HTS-SMES magnets by simulation. The simulation took an electric circuit and a magnetic field phenomenon into account. However, a thermal condition is an important factor in investigating the behavior of an HTS-SMES magnet. Therefore, we have improved the previously developed simulation code to consider the thermal phenomenon. With the newly developed numerical simulation, we have investigated a time transition of a coil current, a critical current, and a temperature in the toroidal HTS-SMES magnets. As a result, it was confirmed that the temperature of all the HTS coils rose up quickly one after another, after the temperature at a certain local area of one HTS coil was increased.
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