What is it about?
This work proposes a new rotor architecture that uses stacks of superconducting tape in the role of permanent magnets. This novel rotor lay-out takes advantage of the mechanical characteristics of the superconducting tape substrate, which allows bending and its utilization as structural element to supress the iron bridges that cause flux leakage and avoid magnetization. The performance of the proposed architecture is computed by means of a recently proposed numerical approach combining the H- and the A-formulations, permitting both to compute the electromagnetic state of superconducting regions using the H-formulation and the required electromechanical characteristics by means of the classical A-formulation.
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Why is it important?
This architecture may allow the construction of a fully superconducting motor for aircraft propulsion applications with a power density one order the magnitude above the actual state-of-the-art.
Perspectives
1. Only fully superconducting machines can provide torque/low speed required for the airliner propulsion. 2. Superconducting stacks may be an enabler technology, but: - magnetization must be improved - demagnetization must be assessed and tackled 3. Superconducting motor architectures may differ from conventional ones. 4. Finite Element models can now simulate SC motors.
Dr Vicente Climente-Alarcon
University of Cambridge
Read the Original
This page is a summary of: Field Cooling Magnetization and Losses of an Improved Architecture of Trapped-Field Superconducting Rotor for Aircraft Applications, August 2019, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2019-4313.
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