Protection and control of wireless power systems
AssigneeWiTricity Corporation
InventorMilisav Danilovic
Life of this patent
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Abstract
Methods, systems, and devices for protecting a wireless power transfer system. One aspect features a sensor network for a wireless power transfer system. The sensor network includes a differential voltage sensing circuit and a current sensing circuit. The differential voltage sensing circuit is arranged within a wireless power transfer system to measure a rate of change of a voltage difference between portions of an impedance matching network and generate a first signal representing the rate of change of the voltage difference. The current sensing circuit is coupled to the differential voltage sensing circuit and configured to calculate, based on the first signal, a current through a resonator coil coupled to the wireless power transfer system.
Claims18
A sensor network for a wireless power transfer system, the sensor network comprising:
- a differential voltage sensing circuit arranged within transmitter control circuitry of the wireless power transfer system to measure a rate of change of a voltage difference between portions of an impedance matching network and generate a first signal representing the rate of change of the voltage difference;
- and
- a current sensing circuit coupled to the differential voltage sensing circuit and configured to calculate, based on the first signal, a current through a resonator coil coupled to, but remote from, the transmitter control circuitry.
A sensor network for a wireless power transfer system, the sensor network comprising:
- transmitter control circuitry comprising:
- means for measuring a rate of change of a voltage difference between portions of an impedance matching network and generating a first signal representing the rate of change of the voltage difference;
- and
- a current sensing circuit coupled to the means for measuring a rate of change of a voltage difference between portions of an impedance matching network and the current sensing circuit configured to calculate, based on the first signal, a current through a resonator coil coupled to, but remote from, the transmitter control circuitry.
Dependencies are inferred from the claim text.