SYSTEM, DEVICE, AND METHOD FOR CONTROLLING A POWER INVERTER
First Claim
Patent Images
1. A device comprising:
- circuitry configured todetermine a load impedance for at least one power conversion device,control a dead-time of one or more switching stages of the at least one power conversion device based on the load impedance, andcontrol a tunable matching network based on the load impedance and the dead-time of the one or more switching stages.
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Abstract
A wireless power transmitter includes circuitry configured to determine a reflected impedance from a receiver coil at a transmitter coil and control a dead-time of one or more switching stages of a power conversion device based on the reflected impedance. A tunable matching network at the transmitter is controlled based on the reflected impedance and the dead-time of the one or more switching stages.
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Citations
20 Claims
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1. A device comprising:
circuitry configured to determine a load impedance for at least one power conversion device, control a dead-time of one or more switching stages of the at least one power conversion device based on the load impedance, and control a tunable matching network based on the load impedance and the dead-time of the one or more switching stages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 9, 18)
- 16. The device of claim 15, wherein the circuitry is further configured to modify an impedance of the tunable matching network in response to determining that a first value of a first accumulator is greater than zero and the dead-time between the first switch and the second switch is greater than or equal to the upper dead-time threshold.
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19. A method comprising:
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determining a reflected impedance from a receiver coil at a coil of a wireless power transmitter; controlling a dead-time of one or more switching stages of at least one power conversion device of the wireless power transmitter based on the reflected impedance; and controlling an impedance of a tunable matching network based on the reflected impedance and the dead-time of the one or more switching stages.
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20. A wireless power transmitter comprising:
circuitry configured to determine a reflected impedance from a receiver coil at a transmitter coil, control a dead-time of one or more switching stages of a power conversion device based on the reflected impedance, and control a tunable impedance of a matching network at the transmitter based on the reflected impedance and the dead-time of the one or more switching stages.
Specification