CPC B60L 53/12 (2019.02) [H02J 7/00034 (2020.01); H02J 50/12 (2016.02); H02J 50/80 (2016.02); H04B 5/26 (2024.01); H04B 5/79 (2024.01)] | 32 Claims |
1. A method for determining a charging frequency between a transmitting coil and a receiving coil of a wireless power transfer (WPT) system, comprising:
setting an input voltage to the transmitting coil at a fixed voltage;
shunting the receiving coil;
determining a first input current frequency range in which a resonant frequency is expected to be found;
frequency polling within the first input current frequency range using a set of polling frequencies in the first input current frequency range; and
selecting as the charging frequency a polling frequency having a lowest input current.
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