Design of a high lateral misalignment tolerance magnetic coupler for wireless power transfer systems

Wireless power transfer (WPT) systems with square shaped ferrite core are widely used in various applications because of its simplicity. However, it allows very limited lateral misalignment of the power receiver relative to the power transmitter and suffers from big amount of magnetic cores, which is not suitable for some applications such as electric vehicle wireless charging. This paper presents a novel magnetic coupler characterized by its high lateral misalignment tolerance and fewer magnetic cores. Methods to enhance lateral misalignment tolerance are analyzed and simulated.

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