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Resonant inductive coupling wireless power transfer (RIC-WPT) is attractive as a convenient power supply method to small mobile apparatus. However, limited size of the receiving coil can limit the efficiency and the power transfer capability. This paper addresses this difficulty by proposing a novel receiving coil structure. The proposed structure has a coil wound on a drum core with a thin axis....
For analysis of power consumption of resistance spot welding systems field-circuit modelling is required. It includes both 2D eddy-current FEA analysis for estimation of the leakage impedance of transformer and P-Spice program for the circuit simulation. It is shown that the design of the transformer influences on the output current and power consumption. We used the equivalent circuit of three-winding...
An improved T-model equivalent circuit of a single-sided linear induction machine (SLIM) is proposed. The analysis utilizes a set of one-dimensional air gap flux linkage equations. The model takes longitudinal end and transversal edge effects into consideration. These have to account for primary terminal half-filled slots, secondary back-iron saturation and skin effect in the secondary conducting...
A simple, easy to manufacture and high efficient integrated planar transformer design approach for primary parallel isolated boost converters is presented. Utilizing the same phase flux flow, transformers are integrated, reducing the total ferrite volume and core loss for the same peak flux density. Number of turns is minimized for easy manufacturing by cascade placement of planar cores increasing...
The performances of an electrical machine can be described by the dynamic and energetic characteristics, on one hand, and by the gauge dimensions, on the other hand. The minimum and maximum operation speed, the speed range, the answer time, the noise level, the reliability and, a last important aspect, the cost price are decisive elements for the economic and technical success of a constructive solution...
The work presents a study of the quantification of the parameterspsila variation caused by applying interleaving techniques in high-frequency transformers. The paper concerns prediction of the effect of interleaving techniques between different layers (interlayer )and in the same layer (intra-layer). Two coefficients had been obtained to respectively show the variation rule of AC resistance and leakage...
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