Method and System for Wireless Power Transfer Calibration

摘要

In a WPT system, varying parameters, such as coupling coefficient, may cause the system to fall out of resonance and/or tuning. By monitoring one or more signals within a coil module of the WPT device, this detuning can be detected. Moreover, the WPT system can retune itself by modifying one or more parameters in a transmitting WPT device and/or a receiving WPT device. For example, coil circuits in the transmitting and/or receiving WPT devices can be configured to allow for adjusting of effective capacitance, effective inductance, load resistance, and/or load inductance. In addition, frequency can be modified to permit adjusting power transfer efficiency.

主权项

1. A wireless power transfer device, comprising:
a coil module configured to at least one of send and receive wireless power transfer signals; a tuning observer module configured to detect a tuning state of the wireless power transfer device, the tuning state being one of a tuned state or an out-of-tune state; and a resonance controller module configured to adjust at least one parameter of the coil module when the tuning observer module detects an out-of-tune state in order to provide the tuned state.