Wireless energy transfer modeling tool

• US 8,667,452 B2
• Filed: 11/05/2012
• Issued: 03/04/2014
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: WiTricity Corporation
• Inventors: Verghese, Simon, Efe, Volkan, Kesler, Morris P., Kurs, Andre B., Karalis, Aristeidis, McCauley, Alexander Patrick, Hijarrubia, Maria Empar Rollano
• Primary Examiner(s): Memula, Suresh
• Application Number:
  US13/668,756
• Publication Number:
  US 20130159956A1
• Time in Patent Office: 484 Days
• Field of Search: 307/104, 716/136
• US Class Current: 716/136
• CPC Class Codes: G06F 2119/06 Power analysis or power optimisation
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G06F 30/367 Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
• CPC Class Codes: H02J 50/12 of the resonant type

Abstract

A method includes defining and storing one or more attributes of a source resonator and a device resonator forming a system, defining and storing the interaction between the source resonator and the device resonator, modeling the electromagnetic performance of the system to derive one or more modeled values and utilizing the derived one or more modeled values to design an impedance matching network.

Claims

1. A computer-implemented method comprising:

a) defining and storing, through a computer-implemented user interface, one or more attributes of a source resonator and a device resonator forming a wireless energy transfer system;

b) defining and storing, through the user interface, information about an interaction between the source resonator and the device resonator;

c) modeling, one or more electronic processors, an electromagnetic performance of the wireless energy transfer system to derive one or more modeled values based on the received one or more attributes of the source and device resonator;

d) generating, using the one or more electronic processors, a design of an impedance matching network based on the derived one or more modeled values; and

e) using the one or more electronic processors to provide, through the user interface, a visual representation of information about the modeled electromagnetic performance of the wireless energy transfer system and the generated design of the impedance matching network.

2. The method of claim 1 wherein:

the one or more attributes of the source resonator comprises at least one source resonator parameter selected from the group consisting of source resonator wire type, source resonator length, source resonator width, source resonator coil winding direction, source resonator coil number of turns and source resonator coil spacing between turns; and

the one or more attributes of the device resonator comprises at least one device resonator parameter selected from the group consisting of device resonator wire type, device resonator length, device resonator width, device resonator coil winding direction, device resonator coil number of turns and device resonator coil spacing between turns.

3. The method of claim 1 wherein defining and storing the one or more attributes of the source resonator and the device resonator comprises using the one or more electronic processors to provide alerts to the user interface, the alerts being indicative of one or more logical or physical incompatibilities between the defined one or more attributes.

4. The method of claim 1 wherein defining and storing the one or more attributes of the source resonator comprises retrieving a previously defined source resonator through the user interface and defining and storing the one or more attributes of the device resonator comprises retrieving a previously defined device resonator through the user interface.

5. The method of claim 1 wherein the interaction between the source resonator and the device resonator comprises at least one system parameter selected from the group consisting of a sweep parameter and source/device resonator separation distance.

6. The method of claim 1 further comprising:

f) building a physical system based, at least in part, upon the impedance matching network;

g) measuring at least one attribute of the physical system; and

h) repeating step c wherein the at least one measured attribute of the physical system is utilized to model the electromagnetic performance of the system.

7. A non-transitory computer-readable medium containing a set of instructions that causes a computer to:

enable the defining through a computer-implemented user interface of one or more attributes of a source resonator and a device resonator forming a wireless energy transfer system;

enable the defining through the user interface of information about an interaction between the source resonator and the device resonator;

model an electromagnetic performance of the wireless energy transfer system to derive one or more modeled values based on the defined one or more attributes of the source and device resonator;

generate a design of an impedance matching network based on the derived one or more modeled values; and

provide through the user interface a visual representation of information about the modeled electromagnetic performance of the wireless energy transfer system and the generated design of the impedance matching network.

8. The computer-readable medium of claim 7 wherein:

the one or more attributes of the source resonator comprises at least one source resonator parameter selected from the group consisting of source resonator wire type, source resonator length, source resonator width, source resonator coil winding direction, source resonator coil number of turns and source resonator coil spacing between turns; and

the one or more attributes of the device resonator comprises at least one device resonator parameter selected from the group consisting of device resonator wire type, device resonator length, device resonator width, device resonator coil winding direction, device resonator coil number of turns and device resonator coil spacing between turns.

9. The computer-readable medium of claim 7 wherein the enabling the defining of the one or more attributes of the source resonator and the device resonator comprises providing alerts indicative of one or more logical or physical incompatibilities between the defined one or more attributes.

10. The computer-readable medium of claim 7 wherein the enabling the defining of the one or more attributes of the source resonator comprises retrieving a previously defined source resonator and the enabling the defining of the one or more attributes of the device resonator comprises retrieving a previously defined device resonator.

11. The computer-readable medium of claim 7 wherein the defining of the information about the interaction between the source resonator and the device resonator comprises defining at least one system parameter selected from the group consisting of a sweep parameter and source/device resonator separation distance.

12. The computer-readable medium of claim 7 in which the instructions further causing the computer to model the electromagnetic performance of the wireless energy transfer system utilizing at least one measured attribute of a physical system built based, at least in part, upon the impedance matching network.

13. The computer-readable medium of claim 7 wherein generating the design of the impedance matching network is based on a received a nominal matching value of the wireless energy transfer system.

14. The computer-readable medium of claim 7 wherein the visual representation represents a predicted performance of the wireless energy transfer system based on the generated design of the impedance matching network.

15. The computer-readable medium of claim 14 wherein the predicted performance is based on a fixed impedance value in the wireless energy transfer system.

16. The computer-readable medium of claim 14 wherein providing the visual representation comprises displaying a Smith Chart.

17. The computer-readable medium of claim 7 wherein the visual representation comprises multiple curves which depend on different configurations of the wireless energy transfer system.

18. The computer-readable medium of claim 7 wherein the visual representation comprises a plot of the modeled electromagnetic performance over a range of values of a received sweeping parameter.

19. The computer-readable medium of claim 7 wherein the user interface is a graphical user interface.

20. The computer-readable medium of claim 7 wherein the user interface includes a command line.

21. A computing device comprising:

a memory configured to store instructions;

a processor configured to execute the instructions to;

enable the defining through a user interface of one or more attributes of a source resonator and a device resonator forming a wireless energy transfer system;

enable the defining through the user interface of information about an interaction between the source resonator and the device resonator;

model an electromagnetic performance of the wireless energy transfer system to derive one or more modeled values based on the defined one or more attributes of the source and device resonator;

generate a design of an impedance matching network based on the derived one or more modeled values; and

provide through the user interface a visual representation of information about the modeled electromagnetic performance of the wireless energy transfer system and the generated design of the impedance matching network; and

the user interface configured to display the visual representation.

22. The computing device of claim 21 in which the processor is further configured to model the electromagnetic performance of the wireless energy transfer system utilizing at least one measured attribute of a physical system built based, at least in part, upon the impedance matching network.

23. The computing device of claim 21 in which to enable the defining of the one or more attributes of the source resonator and the device resonator comprises providing alerts indicative of one or more logical or physical incompatibilities between the defined one or more attributes.

24. The computing device of claim 21 in which to enable the defining of the one or more attributes of the source resonator comprises retrieving a previously defined source resonator and to enable the defining of the one or more attributes of the device resonator comprises retrieving a previously defined device resonator.

25. The computer-readable medium of claim 21 wherein the visual representation represents a predicted performance of the wireless energy transfer system based on the generated design of the impedance matching network.

26. The computer-readable medium of claim 21 wherein the visual representation comprises multiple curves which depend on different configurations of the wireless energy transfer system.

27. The computer-readable medium of claim 21 wherein the visual representation comprises a plot of the modeled electromagnetic performance over a range of values of a received sweeping parameter.