Resonant magnetic coupling wireless power transfer system with calibration capabilities of its inductor-capacitor resonant frequencies
AssigneeNational Chiao Tung University
InventorHAO-CHIAO HONG
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Abstract
A resonant magnetic coupling wireless power transfer system with calibration capabilities of the resonant frequencies of its power transmitter(s) and power receiver(s) is disclosed. The system detects the peak voltages of the coil inductors or the resonant capacitors and tunes the resonant capacitors until the detected peak voltages reach their maximal values given proper setup conditions, so as to calibrate the inductor-capacitor (LC) resonance frequencies of the power transmitter(s) and the power receiver(s) in the resonant magnetic coupling wireless power transfer system to achieve the highest power transferred to the load and a high PTE.
Claims20
A resonant magnetic coupling wireless power transfer system with calibration capabilities of its inductor-capacitor resonant frequencies, comprising
- at least one power receiver each at least including a secondary coil and a resonant load circuit;
- and
- at least one power transmitter transmitting an alternating-current power using a carrier wave to said at least one power receiver, and said power transmitter at least including a power amplifier and an inductor-capacitor (LC) resonator driven by said power amplifier, wherein said LC resonator equivalently includes at least a first resonant capacitor and a primary coil connected in series;
- said primary coil generates a primary-side-observation (PSO) voltage;
- during calibrating said first resonant capacitor, said first resonant capacitor is tuned until said PSO voltage's peak voltage reaches its maximal value, and thus said first resonant capacitor achieves its optimal capacitance value.
Dependencies are inferred from the claim text.