Resonant inverter topology, wireless charger, and control method
AssigneeNew York University
InventorsMariusz Bojarski, Dariusz Czarkowski, Francisco De Leon
Life of this patent
Estimating the term…
Abstract
A wireless charger for an electric vehicle and a resonant inverter comprising a resonant portion that serially connects to a phase shifting portion and serially connects with a load component and a method for controlling a resonant inverter having multiple phase shifts, comprising operating the frequency of the resonant inverter close to the resonant frequency of the inverter through the full operation range of the resonant inverter; and adjusting phase shifts to control the output power of the resonant inverter.
Claims20
A resonant inverter comprising:
- an inverter portion connected to an intercell transformer portion and a common resonant portion having a load component,
- wherein the intercell transformer portion includes N intercell transformers ICT1 to ICTn, where N is greater than two,
- wherein each intercell transformer includes a primary winding having an input terminal and an output terminal and a secondary winding having an input terminal and an output terminal, and
- wherein the intercell transformer portion is configured such that:
- each intercell transformer directly connects to at least one other intercell transformer,
- intercell transformers ICT1 and ICTn are connected with each other, and
- one output terminal of each intercell transformer belonging to a group of ICT2 to ICTn−1 is connected with the common resonant portion, while a second output terminal of each intercell transformer belonging to the group of ICT2 to ICTn−1 is electrically connected with an input terminal of an adjacent transformer.
A method for controlling a resonant inverter that includes an intercell transformer portion having multiple phase shifts, comprising:
- operating the resonant inverter at approximately a resonant frequency of the resonant inverter over a full operation range of the resonant inverter;
- and
- adjusting phase shifts of the intercell transformer portion to control an output power of the resonant inverter, the intercell transformer portion including N intercell transformers ICT1 to ICTn, where N is greater than two, wherein:
- each intercell transformer directly connects to at least one other intercell transformer,
- intercell transformers ICT1 and ICTn are connected with each other, and
- one output terminal of each intercell transformer belonging to a group of ICT2 to ICTn−1 is connected with the common resonant portion, while a second output terminal of each intercell transformer belonging to the group of ICT2 to ICTn−1 is electrically connected with an input terminal of an adjacent transformer.
A device for wirelessly charging an electric vehicle, comprising:
- a resonant inverter that includes an inverter portion connected to an intercell transformer portion and a common resonant portion having a load component,
- wherein the intercell transformer portion includes intercell N transformers ICT1 to ICTn, where N is greater than two,
- wherein each intercell transformer includes a primary winding having an input terminal and an output terminal and a secondary winding having an input terminal and an output terminal, and
- wherein the intercell transformer portion is configured such that:
- each intercell transformer directly connects to at least one other intercell transformer,
- intercell transformers ICT1 and ICTn are connected with each other, and
- one output terminal of each intercell transformer belonging to the group of ICT2 to ICTn−1 is connected with the common resonant portion, while a second output terminal of each intercell transformer belonging to the group of ICT2 to ICTn−1 is electrically connected with an input terminal of an adjacent transformer.
Dependencies are inferred from the claim text.