Element Rating and Coupling Harmonics in a Superconductive Energy Transfer System
A superconducting system of coupled coils to transfer energy reversibly to an inductive load was proposed by Smith . Various modifications using transformers [2,3] and switching  followed in an effort to reduce the total system energy. However, a companion paper  compares various transfer schemes and finds the energy rating of the coil elements is still three times larger than those of other systems. This fact suggests that element rating rather than system energy should be optimized. Second, it is considered that the transfer speed could be increased by using nonsinusoidal coil coupling, still maintaining the zero-torque constraint. Finally, experiments in the laboratory led to an interest in the effect of superconductive losses and coupling harmonics on torque requirements.
KeywordsLoad Current Flux Linkage Torque Ripple Element Rate Stator Coil
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