PHASE SHIFT POWER TRANSFER
First Claim
1. An apparatus, comprising:
- a coil configured for wireless energy transfer;
an adjustable alternating current power supply electrically connected to the coil;
wherein, when a device is in the vicinity of the apparatus, the apparatus determines an operating parameter of the device, andbased on the device operating parameter, adjusts a power supply operating parameter.
1 Assignment
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Accused Products
Abstract
In a wireless energy transfer system, an apparatus includes a coil and an adjustable alternating current power supply electrically connected to the coil. When a device is in the vicinity of the apparatus, the apparatus determines an operating parameter of the device and adjusts a power supply operating parameter based on the determined device operating parameter. The apparatus may be a transmitter wirelessly transmitting power to the device or a receiver wirelessly receiving power from the device.
The operating parameter may be frequency, and the apparatus adjusts the power supply frequency to be substantially equal to the device frequency, which may be the device resonant frequency.
The operating parameter may be phase, and the apparatus adjusts the power supply phase to be out of phase with the device. The phase of the power supply may be adjusted to ninety degrees out of phase with the device for maximum power transfer.
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Citations
23 Claims
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1. An apparatus, comprising:
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a coil configured for wireless energy transfer; an adjustable alternating current power supply electrically connected to the coil; wherein, when a device is in the vicinity of the apparatus, the apparatus determines an operating parameter of the device, and based on the device operating parameter, adjusts a power supply operating parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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recognizing that a device is in the vicinity of a coil in a wireless energy transfer system; determining an operating parameter of the device; adjusting an operating parameter of a power supply in the wireless energy transfer system based on the determined device operating parameter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system, comprising:
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At least one transmitter including a primary coil; and a first power supply electrically connected to the primary coil; and at least one receiver including a secondary coil; and a second power supply electrically connected to the secondary coil; wherein the at least one transmitter and the at least one receiver are configured for wireless energy transfer between the primary coil and the secondary coil; and wherein phase of one of the first power supply or second power supply is adjusted based on a determination of phase of the other of the first power supply or second power supply.
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Specification