Abstract
As a kind of high-power density machine, superconducting machines have important application prospects in the fields of aerospace, ship propulsion, and wind power generation. The existing semisuperconducting-type machines have great difficulties in design and application because of the need to use complicated structures such as brushes and rotating dewars. A rotating-pole-shoe-type high-temperature superconducting machine is proposed in this article. The machine separates the pole shoe from the magnetic pole and generates a magnetic field synchronized with the armature side by rotating the pole shoe. The excitation system of the machine consists of a rotating rotor and a stationary inner stator. The superconducting coil is placed on the inner stator, avoiding the use of complex structures such as brushes and rotary seals. Aiming at the special structure of the rotating-pole-shoe-type superconducting machine, a three-dimensional magnetic field analysis of the superconducting machine is performed to improve the machine structure. The output performance of the machine is calculated and compared with that of the semisuperconducting-type machine.
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