Development Trends of Inductive Power Transfer Systems Utilizing Electromagnetic Induction with Focus on Transmission Frequency and Transmission Power

In recent years, inductive power transfer (IPT) systems have been actively studied. This paper describes the development trend of inductive power transfer systems since the 1970s, focusing on the transmission frequency, transmission power, and the coupling coefficient, on the basis of a survey of papers published by IEEJ and IEEE. The transmission power shows close correlation with the transmission frequency. By contrast, the coupling coefficient does not show correlation with either the transmission frequency or the transmission power.

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