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This paper presents a novel control method for wireless power transmission (WPT). The proposed method can maximize the power efficiency only by controlling the voltage ratio between the primary and the secondary side. Experimental measurement results of the prototype system with 3 kW power transmission show the efficiency difference between the proposed control method and the available maximum value...
Lateral misalignment between the transmitter (Tx) and receiver (Rx) in a wireless power transfer (WPT) system significantly reduces its power transmission efficiency. This paper first investigates the lateral misalignment in the magnetic resonance coupled (MRC) WPT system and identifies the High Efficiency Range (HER). The HER is a high efficiency area on the transmission efficiency versus Rx lateral...
This paper presents the feasibility study of bipolar pads for extremely high efficiency wireless battery chargers used in electric vehicle (EV) and plug-in hybrid electric vehicle (PHEV) applications. Due to the unconventional flux distribution in this system, a 3D finite element method was employed for its design and analysis. The importance of misalignment tolerance in this system is analyzed and...
High efficiency and low cost coil system design is one of the key points for wireless power transfer. In this paper, a optimization method with generic algorithm is presented. The coil track layouts are interpreted with binary strings in the design iterations. Some practical considerations and detailed implementations are introduced in the optimization procedure.
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