WIRELESS ENERGY TRANSFER
First Claim
Patent Images
1. A wireless power system comprising:
- a power source;
a source resonator configured to receive power from the power source, wherein the source resonator has a resonant frequency fs=ω
s/2π
, an intrinsic loss rate Γ
s, and is capable of storing electromagnetic energy with an intrinsic quality factor Qs=ω
s/(2Γ
s);
a receiver resonator configured to provide power to a load, wherein the receiver resonator has a resonant frequency frc=ω
rc/2π
, an intrinsic loss rate Γ
rc, and is capable of storing electromagnetic energy with an intrinsic quality factor Qrc=ω
rc/(2Γ
rc); and
at least one repeater resonator configured to couple power wirelessly from the source resonator to the receiver resonator, wherein the at least one repeater resonator has a resonant frequency fr1=ω
r1/2π
, an intrinsic loss rate Γ
r1, and is capable of storing electromagnetic energy with an intrinsic quality factor Qr1=ω
r1/(2Γ
r1), andwherein the power source is configured to provide power to the source resonator at a first frequency f1 different from at least one of the resonant frequencies.
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Abstract
A wireless power system includes: i) a power source; ii) a source resonator configured to receive power from the power source; iii) a receiver resonator configured to provide power to a load; and iv) at least one repeater resonator configured to couple power wirelessly from the source resonator to the receiver resonator. The power source is configured to provide power to the source resonator at a first frequency f1 different from at least one of the resonant frequencies corresponding to the resonators.
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Citations
25 Claims
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1. A wireless power system comprising:
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a power source; a source resonator configured to receive power from the power source, wherein the source resonator has a resonant frequency fs=ω
s/2π
, an intrinsic loss rate Γ
s, and is capable of storing electromagnetic energy with an intrinsic quality factor Qs=ω
s/(2Γ
s);a receiver resonator configured to provide power to a load, wherein the receiver resonator has a resonant frequency frc=ω
rc/2π
, an intrinsic loss rate Γ
rc, and is capable of storing electromagnetic energy with an intrinsic quality factor Qrc=ω
rc/(2Γ
rc); andat least one repeater resonator configured to couple power wirelessly from the source resonator to the receiver resonator, wherein the at least one repeater resonator has a resonant frequency fr1=ω
r1/2π
, an intrinsic loss rate Γ
r1, and is capable of storing electromagnetic energy with an intrinsic quality factor Qr1=ω
r1/(2Γ
r1), andwherein the power source is configured to provide power to the source resonator at a first frequency f1 different from at least one of the resonant frequencies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless power method comprising:
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providing power from a power source to a source resonator;
wherein the source resonator has a resonant frequency fs=ω
s/2π
, an intrinsic loss rate Γ
s, and is capable of storing electromagnetic energy with an intrinsic quality factor Qs=ω
s/(2Γ
s);wirelessly transferring power from the source resonator to a receiver resonator through at least one repeater resonator, wherein the receiver resonator has a resonant frequency frcω
rc/2π
, an intrinsic loss rate Γ
rc, and is capable of storing electromagnetic energy with an intrinsic quality factor Qrc=ω
rc/(2Γ
rc) and the at least one repeater resonator has a resonant frequency fr1=ω
r1/2π
, an intrinsic loss rate Γ
r1, and is capable of storing electromagnetic energy with an intrinsic quality factor Qr1=ω
r1/(2Γ
r1); andproviding power from the receiver resonator to a load, wherein the power source provides power to the source resonator at a first frequency f1 different from at least one of the resonant frequencies. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for configuring a wireless power system, the method comprising:
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providing a power source to provide power to a source resonator at an operating frequency fo; positioning one or more receiver resonators, each coupled to a load, at respective desired positions; positioning at least one repeater resonator to wirelessly transfer energy from the source resonator to one or more receiving resonators through the at least one repeater resonator; and adjusting the operating frequency fo and/or the position of at least one of the repeater resonators to improve the wireless energy transfer to the one or more receiver resonators, wherein the operating frequency fo is adjusted to include at least a first frequency f1 different from at least one of the resonant frequencies corresponding to the resonators. - View Dependent Claims (24, 25)
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Specification