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This paper presents a 3-D analytical modeling and experimental analysis of magnetic field distribution and mutual inductance calculation, with and without shielding in a wireless power transfer system. The modeling involves Fourier analysis, magnetic vector, and scalar potential definitions. Magnetic flux density distribution in the air and mutual inductances for various misalignments with shielding...
In this paper, a 3-D analytical model, describing the magnetic field density of air core rectangular coil used in contactless power transfer system has been proposed. The magnetic field distribution is determined using the magnetic scalar and vector potentials. The current through the coil has been represented as a Fourier series. Finally, the results of the analytical model are compared with those...
A mathematical model of series-parallel compensation topology for contactless power transfer system is proposed in this paper. The effect of harmonics is considered to model the system parameter. A fourier series analysis is used in mathematical modeling. An experimental set-up of series-parallel compensated contactless power transfer system is built in the laboratory to verify the proposed model...
This paper discusses four compensation topologies of magnetic coupling system suitable for use in contactless power transfer (CPT) applications. The design and modeling process of CPT system is described in detail. Resonance between the source and load is achieved with compensation capacitors connected at the terminals of the coils. Electric equivalent circuit models are used to describe each circuit...
Series-series (SS) compensation is widely used in contactless power transfer (CPT) for electric vehicle because of their constant current and constant voltage charging features. In this paper, a mathematical model of SS compensation for CPT system is presented. This model includes the effects of harmonics on parameters of SS compensated CPT system. Fourier series analysis is used for mathematical...
This paper presents an experimental study of an Inductively Coupled Power Transfer (ICPT) system using a full bridge converter operating at variable frequency. Equivalent circuit model for ICPT systems are used to represent the total impedance seen by the power supply, by combining the primary and secondary network is detailed. A variable switching frequency controller is used to control the switching...
This paper presents a practical study on variable frequency, variable load and variable distance of a planar contactless power transfer (CPT) system. The study investigates the behavior of CPT system under three different cases and its characteristics plots are generated for wide range of frequency, load and distance such that the real time situations of CPT systems can be analyzed. With these results...
Due to large leakage inductance, compensation is usually necessary in contactless system to achieve the required power transfer. A contactless power transfer system is designed with two such compensation topologies and are presented in this paper. Primary compensation is designed to make the primary phase angle equal to the secondary resonant frequency with minimum VA rating of the power supply. Secondary...
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