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This paper analyzes the relationship between the load and the efficiency of contactless transformer with multi-pickups which are in series or parallel connection. An optimal load resistance is obtained with parameters of contactless transformer at which the efficiency is the highest. Connection mode of multi-pickups affects the optimal load resistance, which is larger at series but smaller at parallel...
ConiaQi\ess transformer is the key component in inductive power transfer (IPT) system and its coupling coefficient (k) will directly affect the power transfer efficiency. In this paper, a contactless transformer applied in movable vehicle with the structure that primary and secondary sides are asymmetrical is studied. By analyzing the magnetic flux distributions of the transformer, magnetic reluctance...
Contactless transformer is the key part of the inductive power transfer (IPT) system that can realize safe electric-energy supply for mobile devices. This paper proposes a novel contactless transformer structure with trapezoidal magnet core, which can be applied to movable vehicle such as high-speed maglev vehicle IPT system. The inductances of primary and secondary windings of different core structures...
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