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Description
To meet the requirements of the high power-to-weight ratio and high efficiency for future electric aircraft, high temperature superconducting (HTS) electrical machines are expected to be the effective solutions. However, the HTS armature windings produce AC loss when operating in HTS electrical machines, leading to a reduction in the efficiency of the HTS electrical machines. This paper will establish a 3D double racetrack coil model based on T-A formulation, and the parameters of this model are based on a 10 kW superconducting synchronous electrical machine design. Then the AC loss of the HTS armature windings will be analyzed under various AC currents and AC magnetic fields. Finally, the multifilamentary design of the HTS windings will be investigated to reduce the AC loss. This study will analyze the AC loss of the HTS windings in the superconducting synchronous electrical machines, which can provide guidance for the designing and optimizing of the HTS windings.
