IMPEDANCE TUNING
First Claim
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1. A wireless power transfer system, comprising:
- a power transmitting apparatus configured to wirelessly transmit power;
a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus; and
a controller connected to the power transmitting apparatus and configured to;
receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus; and
adjust a frequency of the transmitted power based on the measured phase difference.
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Accused Products
Abstract
The disclosure features wireless power transfer systems that include a power transmitting apparatus configured to wirelessly transmit power, a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus, and a controller connected to the power transmitting apparatus and configured to receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus, and to adjust a frequency of the transmitted power based on the measured phase difference.
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Citations
18 Claims
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1. A wireless power transfer system, comprising:
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a power transmitting apparatus configured to wirelessly transmit power; a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus; and a controller connected to the power transmitting apparatus and configured to; receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus; and adjust a frequency of the transmitted power based on the measured phase difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for wireless power transfer, comprising:
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using a power transmitting apparatus to wirelessly transfer power at a selected frequency to a power receiving apparatus connected to an electrical load to deliver power to the load; receiving information about a phase difference between output voltage and current waveforms generated by a power source in the power transmitting apparatus; and adjusting the frequency based on the phase difference. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification