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In this paper, we propose electromagnetic interference (EMI) reduction method in tightly-coupled resonant magnetic field automotive charger. The main technique for reducing EMI is input impedance design based on theoretical analysis of tightly coupled wireless power transfer (WPT) circuit. In order to design input impedance of the tightly coupled WPT circuit, the characteristics of the magnitude of...
In this paper, a new real-time resonance tuning method for wireless power transfer circuits is presented. This method tunes the resonance by control of the effective reactance through inductive coupling with an additional one-turn coil of variable inductance circuit. This method reduces power loss and stress of the switching devices. Circuit analysis, simulation and experimental results are described.
A Moving Field Inductive Power Transfer (MFIPT) system for wireless inductive power supply of electric vehicles on the road is described. To minimize losses only those primary coils located below the secondary coil of a vehicle are excited. The dynamics, the power balance of the MFIPT system, and the costs for the implementation of the system are discussed.
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