Coupled inductor power transfer system
First Claim
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1. A coupled inductor system for wireless power transfer comprising:
- a primary side having a driver operably coupled to a primary side inductor, the driver comprising a sine wave generator and adapted to adjust the frequency and amplitude of the driver output to tune the driver to a system resonant frequency and maximize power transfer and a plurality of half H bridge drivers coupled to the primary side inductor;
a secondary side having a secondary side inductor;
wherein the secondary side is adapted for receiving a sine wave power signal transmitted by the driver through the primary side inductor.
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Abstract
Coupled inductor systems are disclosed in which transmitter and receiver inductors, or coils, are coupled in a configuration for wirelessly transferring power and/or data among them. In preferred implementations, the systems are used for transmitting both power and data in pairs of coupled coils. Primary side circuits in preferred embodiments of the systems of the invention employ Class D or Class G amplifiers.
10 Citations
23 Claims
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1. A coupled inductor system for wireless power transfer comprising:
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a primary side having a driver operably coupled to a primary side inductor, the driver comprising a sine wave generator and adapted to adjust the frequency and amplitude of the driver output to tune the driver to a system resonant frequency and maximize power transfer and a plurality of half H bridge drivers coupled to the primary side inductor; a secondary side having a secondary side inductor; wherein the secondary side is adapted for receiving a sine wave power signal transmitted by the driver through the primary side inductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14)
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12. A coupled inductor system for wireless power transfer comprising:
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a primary side having a sine wave generator operably coupled to a driver, two or more power amplifiers, each operably coupled to the sine wave generator, logic operably coupled to the power amplifiers and half H bridge drivers coupled to the logic and the primary side inductor; the driver operably coupled to a primary side inductor; a secondary side having a secondary side inductor; wherein the secondary side is adapted for receiving a sine wave power signal transmitted by the driver through the primary side inductor; and circuitry whereby feedback from the secondary side is provided to the primary side for controlling the driver to adjust the frequency and amplitude of the driver output to tune the driver to a system resonant frequency and maximize power transfer. - View Dependent Claims (13, 15, 16, 17, 18, 19)
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20. A coupled inductor system for wireless power transfer comprising:
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a primary side having a sine wave generator operably coupled to a Class G amplifier driver, the Class G amplifier operably coupled to a primary side inductor, logic operably coupled to the Class G amplifier, and half H bridge drivers coupled to the logic and the primary side inductor; a secondary side having a secondary side inductor; wherein the secondary side is adapted for receiving a sine wave power signal transmitted by the driver through the primary side inductor; and circuitry whereby feedback from the secondary side is provided to the primary side for controlling the driver to adjust the frequency and amplitude of the driver output to tune the driver to a system resonant frequency and maximize power transfer. - View Dependent Claims (22)
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21. A coupled inductor system for wireless power transfer comprising:
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a primary side having a sine wave generator operably coupled to a Class D driver, the Class D amplifier operably coupled to a primary side inductor, logic operably coupled to the Class D amplifier, and half H bridge drivers coupled to the logic and the primary side inductor; a secondary side having a secondary side inductor; wherein the secondary side is adapted for receiving a sine wave power signal transmitted by the driver through the primary side inductor; and circuitry whereby feedback from the secondary side is provided to the primary side for controlling the driver to adjust the frequency and amplitude of the driver output to tune the driver to a system resonant frequency and maximize power transfer. - View Dependent Claims (23)
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Specification