A charging frequency between a transmitting coil and a receiving coil of a wireless power transfer (WPT) system is found by 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. The first input current frequency range may be found by setting the first input current frequency range based on regulation, international electromagnetic frequency allotments, or prior experience with WPT between the transmitting coil and the receiving coil. A frequency range around the input current minima is selected to poll for a charging frequency that approximates the resonant frequency.
CHARGING FREQUENCY DETERMINATION FOR WIRELESS POWER TRANSFER
BESTIMMUNG DER LADEFREQUENZ FÜR DRAHTLOSE STROMÜBERTRAGUNG
DÉTERMINATION DE LA FRÉQUENCE DE CHARGE POUR LE TRANSFERT D'ÉNERGIE SANS FIL
2025-04-02
Patent
Electronic Resource
English
CHARGING FREQUENCY DETERMINATION FOR WIRELESS POWER TRANSFER
European Patent Office | 2023
|Charging frequency determination for wireless power transfer
European Patent Office | 2024
|Charging Frequency Determination for Wireless Power Transfer
European Patent Office | 2023
|Charging Frequency Determination for Wireless Power Transfer
European Patent Office | 2025
|Charging frequency determination for wireless power transfer
European Patent Office | 2024
|