METHOD AND APPARATUS OF LOAD DETECTION FOR A PLANAR WIRELESS POWER SYSTEM
Described herein are embodiments of a method of determining information regarding power delivered to a high-Q resonator for a planar wireless power transfer system that includes delivering power to a high-Q resonator, measuring a voltage across a capacitor in said high-Q resonator and determining information regarding power delivered to said high-Q resonator.
1 . A method of determining information regarding power delivered to a high-Q resonator for a planar wireless power transfer system, comprising:
delivering power to a high-Q resonator;
measuring a voltage across a capacitor in said high-Q resonator; and
determining information regarding power delivered to said high-Q resonator.
2 . A method of determining information regarding power delivered to a high-Q resonator for a planar wireless power transfer system, comprising:
delivering power to a high-Q resonator;
measuring a current passing through a coil in said high-Q resonator; and
determining information regarding power delivered to said high-Q resonator.
3 . The method according to claim 1 , wherein determining information regarding power delivered to the high-Q resonator comprises using said value to control system operation.
4 . The method according to claim 2 , wherein determining information regarding power delivered to the high-Q resonator comprises using said value to control system operation.
5 . The method according to claim 1 , further comprising: measuring a power delivered by a power source.
6 . The method according to claim 2 , further comprising: measuring a power delivered by a power source.
7 . The method according to claim 1 , wherein the information regarding power delivered by a power source indicates a change in delivered power.
8 . The method according to claim 5 , wherein information regarding power delivered to the high-Q resonator comprises measuring a current in a coil and a voltage across a capacitor of said resonator.
9 . The method according to claim 6 , wherein information regarding power delivered to the high-Q resonator comprises measuring a current in a coil and a voltage across a capacitor of said resonator.
10 . The method according to claim 5 , further comprising: measuring coil current passing through said resonator coil.
11 . The method according to claim 5 , wherein the information regarding power delivered by a power source indicates a change in delivered power.
12 . The method according to claim 6 , wherein the information regarding power delivered by a power source indicates a change in delivered power.
13 . A wireless power apparatus, comprising:
a high-Q resonator comprising a conducting loop and at least one capacitor;
configured for information exchange within the wireless power system.
14 . An apparatus as in claim 13 further comprising a monitor for sensing operating parameters.
15 . An apparatus as in claim 14 wherein said monitor information is exchanged within the wireless power system.
16 . An apparatus as in claim 14 wherein said monitor information is used in a feedback loop.