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Compared with the loosely coupling transformer, the air gap of the rotating transformer in the contactless slipring system (CSS) is relatively much smaller, resulting in a higher coupling coefficient. Higher coupling coefficient could reduce the sensitivity to the parameter variations. But at the same time, it will also increase the harmonic content in the resonant tank and the analyzed error with...
Contactless power transmission (CPT) technique based on the contactless transformers is extraordinarily promising for the electrical vehicle (EV) battery charging application for its safety, convenience and flexibility. By introducing two parallel windings into two EV CPT charging systems so as to constitute two cascaded contactless transformers, a novel contactless bidirectional resonant converter...
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