Systems and methods for dynamically tuning a wireless power transfer system

Patent metadata

Field	Value
Publication number	US-11757307-B2
Application number	US-202016733517-A
Country	US
Kind code	B2
Filing date	Jan 3, 2020
Priority date	Jan 3, 2020
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A system for wireless power transfer includes a wireless transmission system, a wireless receiver system, and a dynamic tuning controller. The wireless transmission system configures an electrical energy signal, using the power from the input power source, for transmission by a transmission antenna. The wireless receiver system is operatively associated with a load and is configured to receive the electrical energy signal from the wireless transmission system, via coupling of the transmission antenna and receiver antenna, and configure the electrical energy signal to transfer power to the load. The dynamic tuning controller is configured to determine an output of the system and determine existence of disturbances to the system, based on the output, control alterations to one or more forward gain elements of one or more of the wireless transmission system, the wireless receiver system, and combinations thereof, if one or more disturbances exist, based on the output.

First claim

What is claimed is:

1. A system for wireless power transfer, the system comprising:
a wireless transmission system configured to receive input power from an input power source, the wireless transmission system comprising:
a transmission antenna, wherein the wireless transmission system is configured to receive the input power from the input power source and provide an electrical energy signal for transmission by the transmission antenna;

a wireless receiver system operatively associated with a load, the wireless receiver system comprising:
a receiver antenna, wherein the wireless receiver system is configured to inductively couple with the transmission antenna and receive the electrical energy signal, and wherein the wireless receiver system is configured to modify the received electrical energy signal to transfer power to the load; and

a dynamic tuning controller comprising:
a processor,
wherein the dynamic tuning controller is configured to:
determine at least one modified operating characteristic associated with one or more of the wireless transmission system, the wireless receiver system, or combinations thereof,
determine existence of one or more disturbances to one or more of the wireless transmission system, the wireless receiver system, or combinations thereof, based on the determined at least one modified operating characteristic, and
control alterations to one or more forward gain elements of one or more of the wireless transmission system, the wireless receiver system, or combinations thereof, to reduce disturbances and maintain operability between the transmission antenna and the receiver antenna based on the determined at least one modified operating characteristic.

2. The system of claim 1 , further comprising one or more sensors, each of the one or more sensors configured to collect at least one operating characteristic associated with one or more of the wireless transmission system, the wireless receiver system, or any combinations thereof, and
wherein the dynamic tuning controller is further configured to receive the at least one operating characteristic from the one or more sensors, and
wherein determining the at least one modified operating characteristic, by the dynamic tuning controller, is based, at least in part, on the received at least one operating characteristic, and wherein the received at least one operating characteristic comprises at least one of a system frequency, a duty cycle of the system frequency, an input voltage to a power conditioning system, a coil capacitance, a coil inductance, a boost converter voltage, or any combinations thereof.

3. The system of claim 1 , further comprising one or more temperature sensors, each of the one or more temperature sensors configured to collect at least one operating characteristic comprising temperature information associated with one or more of the wireless transmission system, the wireless receiver system, or any combinations thereof, and
wherein the dynamic tuning controller is further configured to receive the temperature information from the one or more temperature sensors, and
wherein determining the at least one modified operating characteristic, by the dynamic tuning controller, is based, at least in part, on the received temperature information.

4. The system of claim 1 , further comprising one or more current sensors, each of the one or more current sensors configured to collect at least one operating characteristic comprising current information associated with one or more of the wireless transmission system, the wireless receiver system, or any combinations thereof, and
wherein the dynamic tuning controller is further configured to receive the current information from the one or more current sensors, and
wherein determining the at least one modified operating characteristic, by the dynamic tuning controller, is based, at least in part, on the received current information.

5. The system of claim 1 , further comprising one or more voltage sensors, each of the one or more voltage sensors configured to collect at least one operating characteristic comprising voltage information associated with one or more of the wireless transmission system, the wireless receiver system, or any combinations thereof, and
wherein the dynamic tuning controller is further configured to receive the voltage information from the one or more voltage sensors, and
wherein determining the at least one modified operating characteristic, by the dynamic tuning controller, is based, at least in part, on the received voltage information.

6. The system of claim 1 , wherein the wireless transmission system includes, at least, a transmission control system, the transmission control system configured to set an operating frequency for the wireless transmission system,
wherein the one or more forward gain elements includes the operating frequency, and
wherein the dynamic tuning controller is configured to control alterations to the operating frequency by the transmission control system based on, at least, the determined at least one modified operating characteristic.

7. The system of claim 1 , wherein the wireless transmission system includes, at least, a power amplifier configured to receive an input supply voltage,
wherein the one or more forward gain elements includes the input supply voltage, and
wherein the dynamic tuning controller is configured to control alterations to the input supply voltage of the power amplifier based on, at least, the determined at least one modified operating characteristic.

8. The system of claim 1 , wherein the wireless transmission system includes, at least, a dynamic tuning capacitor circuit, the dynamic tuning capacitor circuit having a configurable capacitance,
wherein the one or more forward gain elements includes the configurable capacitance, and
wherein the dynamic tuning controller is configured to control alterations to the configurable capacitance based on, at least, the determined at least one modified operating characteristic.

9. The system of claim 8 , wherein the dynamic tuning capacitor circuit includes a plurality of selectable capacitors and the configurable capacitance is configured by selecting one or more of the plurality of selectable capacitors, and
wherein the dynamic tuning controller is configured to select one or more of the plurality of selectable capacitors.

10. The system of claim 1 , wherein the transmission antenna is a dynamically tunable transmission antenna, the dynamically tunable transmission antenna having a configurable inductance,
wherein the one or more forward gain elements includes the configurable inductance, and
wherein the dynamic tuning controller is configured to control alterations to the configurable inductance based on, at least, the determined at least one modified operating characteristic.

11. The system of claim 10 , wherein the dynamically tunable transmission antenna is a multi-mode antenna having a plurality of modes, wherein the configurable inductance is configured by selecting an operating mode from the plurality of modes, and
wherein the dynamic tuning controller is configured to select the operating mode from the plurality of modes.

12. The system of claim 1 , wherein the receiver antenna is a dynamically tunable receiver antenna, the dynamically tunable receiver antenna having a configurable inductance,
wherein the one or more forward gain elements includes the configurable inductance, and
wherein the dynamic tuning controller is configured to control alterations to the configurable inductance based on, at least, the determined at least one modified operating characteristic.

13

Assignees

• Nucurrent Inc

Inventors

• Peralta Alberto
• Shostak Pavel
• Crnkovic Jim

Classifications

• H02J50/12 Primary

  of the resonant type · CPC title

• H02J50/20 Primary

  using microwaves or radio frequency waves · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02J50/005

  Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices · CPC title