TUNING AND GAIN CONTROL IN ELECTRO-MAGNETIC POWER SYSTEMS
Described herein are embodiments of a magnetic power coupling system that includes at least one high-Q receiver resonator, configured to receive a magnetic signal within a near field of at least one other high-Q resonator that conveys power therein, and converts said magnetic signal into power, and produces a power output, said receiver including a connection to a load, wherein said connection allows coupling of said power to said load, wherein said receiver creates a signal, said signal representing at least one characteristic of the power coupling, and wherein said characteristic of the power coupling changes based on environmental conditions.
1 . A magnetic power coupling system, comprising:
at least one high-Q receiver resonator, configured to receive a magnetic signal within a near field of at least one other high-Q resonator that conveys power therein, and converts said magnetic signal into power, and produces a power output, said receiver including a connection to a load, wherein said connection allows coupling of said power to said load, wherein said receiver creates a signal, said signal representing at least one characteristic of the power coupling, and wherein said characteristic of the power coupling changes based on environmental conditions.
2 . A system as in claim 1 , further comprising changing a characteristic of the power coupling based on said signal.
3 . A system as in claim 2 , wherein said characteristic of the power coupling comprises a received power level at the receiver.
4 . A system as in claim 2 , wherein said characteristic of the power coupling comprises a generated magnetic field level at the other resonator.
5 . A system as in claim 1 , wherein said signal controls changing a characteristic of the power coupling.
6 . A system as in claim 2 , wherein said changing a characteristic comprises changing a position of at least one resonator.
7 . A system as in claim 2 , wherein said changing a characteristic comprises changing a current circulating in at least one resonator coil.
8 . A system as in claim 1 , wherein said signal is sent from said receiver to said other resonator wirelessly.
9 . A system as in claim 1 , wherein said at least one receiver changes its resonant frequency responsive to said signal.
10 . A system as in claim 1 , wherein said at least one other resonator changes its resonant frequency responsive to said signal.
11 . A system, comprising:
a magnetic power coupling system, comprising at least one high-Q magnetic resonator, that receives electric power from a power source to be transmitted to at least one remote high-Q receiver magnetic resonator, and couples said power to said remote receiver magnetically by creating a magnetic near-field, said magnetic power coupling system also including a receiving part that receives at least one signal indicative of the magnetic power coupling, and changes a characteristic of the created magnetic field based on said at least one signal indicative of said coupling.
12 . A system as in claim 11 , wherein said at least one high-Q magnetic resonator changes a way that power is transmitted responsive to said signal.
13 . A system as in claim 12 , wherein said changing the way the power is transmitted comprises changing a position of at least one resonator.
14 . A system as in claim 13 , wherein said changing the way that the power is transmitted comprises changing a current circulating in at least one resonator coil.
15 . A system as in claim 11 , wherein said at least one signal is received wirelessly.
16 . A system as in claim 11 , wherein said at least one magnetic resonator changes its resonant frequency based on said at least one signal.
17 . A system as in claim 11 , wherein said at least one magnetic resonator changes at least one resonator driving signal.
18 . A system as in claim 17 , wherein said changing comprises digital signal processing.
19 . A system as in claim 17 , wherein said changing changes a frequency of the generated magnetic field.
20 . A method, comprising:
creating a magnetic field within a near field of at least one high-Q resonator to be used to couple electric power to a load;
detecting if at least one high-Q device resonator coupled to a load is present, and adjusting said created near-field based on the presence of the at least one device resonator coupled to a load.
21 . A method, comprising:
receiving electric power from a power source, to be transmitted wirelessly to at least one remote high-Q receiver resonator,
coupling said power to said remote receiver magnetically by creating a magnetic field within a near field of at least one other high-Q resonator;
receiving a signal indicative of said power transmission, and
changing a characteristic of the created magnetic field based on said signal.
22 . A method as in claim 21 , wherein said changing a characteristic comprises changing a position of at least one resonator.
23 . A method as in claim 21 , wherein said changing a characteristic comprises changing a current circulating in at least one resonator coil.
24 . A method, comprising:
using electric power to drive at least a first high-Q resonator to create a magnetic field that has the capability to convey power from a first location, where the electric power is created, to a second location within the near field of the at least one high-Q resonator remote from said first location;
receiving the magnetic field in at least one high-Q receiver resonator that is remote from a source of said electric power and is not connected thereto by a conducting wire, and, based on said receiving, producing an electrical output signal based on said magnetic field;
receiving a signal indicative of said conveyance of electric power; and
based on said signal, changing a characteristic of the created magnetic field.
25 . An apparatus, comprising:
means for creating a magnetic near field in the vicinity of at least one high-Q source resonator to induce currents in at least one high-Q receiver resonator coupled to a load;
means for detecting if the load is present; and
means for adjusting the created magnetic field based on said detecting.
26 . An apparatus as in claim 25 , wherein the means for creating a magnetic near field in the vicinity the high-Q source resonator comprises driving the source resonator at its resonant frequency.
27 . An apparatus as in claim 25 , wherein the means for detecting if the load is present is through information exchange from the high-Q receiver resonator to the high-Q source resonator.
28 . An apparatus as in claim 25 , wherein the means for adjusting the created magnetic field is through adjusting a current flowing in the high-Q source resonator.
29 . An apparatus as in claim 25 , wherein the means for adjusting the created magnetic field is through adjusting a power source drive parameter to the high-Q source resonator.
30 . An apparatus as in claim 29 , wherein the drive parameter is at least one of frequency and amplitude.
31 . An apparatus, comprising:
means for receiving electric power from a power source, to be transmitted to at least one remote high-Q receiver resonator,
means for coupling said power to said remote receiver magnetically by creating a magnetic field within a near field of at least one high-Q source resonator;
means for receiving a signal indicative of said transmitted power, and
means for changing a characteristic of the created magnetic field based on said signal.
32 . An apparatus as in claim 31 , wherein the means for receiving electric power from a power source is at least one of a power supply and control unit.
33 . An apparatus as in claim 31 , wherein the means for coupling said power to said remote receiver magnetically comprises driving the source resonator at its resonant frequency.
34 . An apparatus as in claim 31 , wherein the means for receiving a signal indicative of said transmitted power is through information exchange from the high-Q receiver resonator to the high-Q source resonator.
35 . An apparatus as in claim 31 , wherein the means for changing a characteristic of the created magnetic field is through adjusting a current flowing in the high-Q source resonator.
36 . An apparatus as in claim 31 , wherein the means for changing a characteristic of the created magnetic field is through adjusting a power source drive parameter to the high-Q source resonator.
37 . An apparatus as in claim 36 , wherein the drive parameter is at least one of frequency and amplitude.
38 . An apparatus as in claim 31 , wherein said means for changing a characteristic comprises means for changing a position of a resonator.
39 . An apparatus as in claim 38 , wherein the means for changing the position of the resonator comprises changing the distance between the two resonators.
40 . An apparatus as in claim 39 , wherein the changing of the position is through a mechanical movement.
41 . An apparatus as in claim 39 , wherein the changing of the position is through a motorized movement.
42 . An apparatus as in claim 38 , wherein the means for changing the position of the resonator comprises changing the orientation between the two resonators.
43 . An apparatus as in claim 42 , wherein the changing of the orientation is through a mechanical movement.
44 . An apparatus as in claim 42 , wherein the changing of the orientation is through a motorized movement.
45 . An apparatus as in claim 31 , wherein said means for changing a characteristic comprises a means for controlling the current circulating in at least one resonator coil.
46 . An apparatus as in claim 45 , wherein the means for controlling the current circulating is through adjusting a power source drive parameter to the high-Q source resonator.
47 . An apparatus as in claim 46 , wherein the drive parameter is at least one of frequency and amplitude.