Design of the coil for the Pulsed Field Magnetization of a bulk HTS motor

Invited Poster; International audience; Despite the large magnetic fields that can be generated by High-Temperature Superconducting (HTS) bulks, very few bulk HTS machines have been developed worldwide. To explore the potential of such machines, a 30-kW low speed, radial-gap synchronous generator with an air-cored rotor and a conventional stator with ferromagnetic teeth has been realized by TUMSAT. Each field pole on the rotor is composed of a rectangular array of 15 square GdBaCuO bulks cooled down through a thermosiphon. A trapped magnetic field Bp greater than 3 T is targeted at the top center of each bulks, which means that roughly 6 T must be applied through the pulse field magnetization (PFM). By means of a 3D modeling of the machine's pole, the paper aims to design a coil to magnetize the array of 15 bulks.