Vehicle wireless charging system including an inverter to control a voltage input to a vehicle power converter
First Claim
1. A vehicle wireless charging system comprising:
- an inverter; and
at least one controller programmed to change a frequency output of the inverter to control a voltage input to a vehicle power converter to drive an impedance phase angle at an output of the inverter toward a predetermined angle and achieve a power demand at an output of the vehicle power converter according to an error between the voltage input and a voltage reference that is based on the power demand, a power output of the vehicle power converter, the impedance phase angle, and the predetermined angle and change the frequency output based on a rate of change of a weighted objective function configured to reduce an output power error of the vehicle power converter and an impedance phase angle error at an inverter output.
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Accused Products
Abstract
A wireless vehicle charging system includes at least one controller configured to operate an inverter to control a voltage input to a power converter in a vehicle to drive an impedance phase angle at an output of the inverter toward a predetermined angle and achieve a power demand at an output of the vehicle power converter. The at least one controller is further configured to operate the vehicle power converter to achieve the power demand. The at least one controller may control a frequency output of the inverter to adjust the voltage input to the power converter based on a rate of change of an objective function that is configured to reduce an output power error of the power converter and an impedance phase angle error at the output of the inverter.
14 Citations
18 Claims
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1. A vehicle wireless charging system comprising:
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an inverter; and at least one controller programmed to change a frequency output of the inverter to control a voltage input to a vehicle power converter to drive an impedance phase angle at an output of the inverter toward a predetermined angle and achieve a power demand at an output of the vehicle power converter according to an error between the voltage input and a voltage reference that is based on the power demand, a power output of the vehicle power converter, the impedance phase angle, and the predetermined angle and change the frequency output based on a rate of change of a weighted objective function configured to reduce an output power error of the vehicle power converter and an impedance phase angle error at an inverter output. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle wireless charging system comprising:
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an inverter configured to inductively couple to a vehicle power converter; and at least one controller programmed to control a frequency output of the inverter to adjust a voltage input to the vehicle power converter based on a rate of change of a weighted objective function configured to reduce an output power error of the vehicle power converter and an impedance phase angle error at an inverter output. - View Dependent Claims (8, 9, 10, 11)
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12. A method of controlling vehicle charging comprising:
changing, by at least one controller, a frequency at an output of an inverter that is configured to generate a voltage input to an inductively coupled power converter to drive an impedance phase angle at an output of the inverter toward a predetermined angle and achieve a power demand at an output of the power converter according to an error between the voltage input and a voltage reference that is based on the Dower demand, a power output of the power converter, the impedance phase angle, and the predetermined angle and changing the frequency based on a rate of change of a weighted objective function that includes an output power error of the power converter and an impedance phase angle error at the output of the inverter. - View Dependent Claims (13, 14, 15, 16, 17, 18)
Specification