ADAPTIVE WIRELESS POWER TRANSFER APPARATUS AND METHOD THEREOF
Described herein are embodiments of a method that includes coupling a high-Q resonator of a transmitter and a high-Q resonator of a receiver together by a common inductance of the transmitter and the receiver; and adjusting the transmitter, the receiver, or both, to control power transmitted wirelessly between the transmitter and the receiver.
1 . A method comprising:
coupling a high-Q resonator of a transmitter and a high-Q resonator of a receiver together by a common inductance of the transmitter and the receiver; and
adjusting the transmitter, the receiver, or both, to control power transmitted wirelessly between the transmitter and the receiver.
2 . The method according to claim 1 , further comprising: producing a first and a second resonant mode of different frequencies for some common inductance value.
3 . The method according to claim 1 , wherein said adjusting includes adjusting any of: a range between the transmitter and the receiver, a relative orientation between the transmitter and the receiver, and a load on the receiver.
4 . The method according to claim 1 , wherein said adjusting includes adjusting any of: a frequency at which power is transmitted, an impedance between a loop and a coil of the transmitter, an impedance between a loop and a coil of the receiver, and an impedance-matching component of the transmitter and an impedance-matching component of the receiver.
5 . The method according to claim 1 , wherein at least one of the transmitter or the receiver includes a loop and a coil.
6 . The method according to claim 1 , wherein at least one of the transmitter or the receiver includes an impedance matching network and a coil.
7 . The method according to claim 1 , wherein at least one of the transmitter or the receiver includes a transformer and a coil.
8 . The method according to claim 1 , wherein one of the transmitter or the receiver includes an impedance-matching network that includes inductors and capacitors configured to connect a signal source to the resonator structure.
9 . The method according to claim 1 , further comprising:
fixing a value of a loop-to-coil coupling coefficient of the transmitter; and
tuning a frequency adaptively to choose a desired frequency for a particular value of a coupling coefficient of a transmitter resonator coil to a receiver resonator coil.
10 . The method according to claim 1 , further comprising:
monitoring a reflected power; and
adjusting a frequency of the transmitter to minimize the reflected power.
11 . The method according to claim 1 , wherein the system is adjusted to maximize power transmitted wirelessly.
12 . The method according to claim 1 , further comprising:
determining a desired frequency for a distance between the transmitter and the receiver based on information exchange between said transmitter and receiver.
13 . The method according to claim 1 , further comprising:
monitoring a received power; and
adjusting a frequency of the transmitter to maximize the received power.
14 . A transmitter comprising:
a high-Q resonator configured to couple with a high-Q resonator of a receiver by a common inductance; and
a controller configured to optimize transmitted power, the transmitter configured to transmit power wirelessly to the receiver.
15 . The transmitter according to claim 14 , wherein the resonator includes one or more of the following:
a loop, a coil, a transformer, and an impedance-matching network.
16 . A receiver comprising:
a high-Q resonator configured to couple with a high-Q resonator of a transmitter by a common inductance; and
optimally receive power wirelessly from the transmitter.
17 . The receiver according to claim 16 , wherein the resonator includes one or more of the following:
a loop, a coil, a transformer, and an impedance-matching network.