METHOD AND SYSTEM FOR A HIGH SPEED SOFT-SWITCHING RESONANT CONVERTER
First Claim
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1. A method of transferring electric charge between a first power terminal having a plurality of first-nodes and a second power terminal having a plurality of second-nodes, said method comprising:
- interchanging charges between a first first-node of the plurality of first-nodes with a resonant circuit, the resonant circuit including a storage device and a series connected inductive section;
when a predetermined charge has been interchanged between the first first-node and the resonant circuit, replacing the first first-node by a second first-node of the plurality of first-nodes and interchanging charges between the second first-node and the resonant circuit;
when a predetermined charge has been interchanged between the second first-node and the resonant circuit, replacing the second first-node by a first second-node of the plurality of second-nodes;
when a predetermined charge has been interchanged between the first second-node and the resonant circuit, replacing the first second-node by a second second-node of the plurality of second-nodes and interchanging charges between the second second-node and the resonant circuit.
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Abstract
A high power and high frequency resonant converter topology and control system operates in a configuration and mode that significantly reduces the voltage on the solid-state switches while retaining the soft switching features.
30 Citations
25 Claims
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1. A method of transferring electric charge between a first power terminal having a plurality of first-nodes and a second power terminal having a plurality of second-nodes, said method comprising:
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interchanging charges between a first first-node of the plurality of first-nodes with a resonant circuit, the resonant circuit including a storage device and a series connected inductive section; when a predetermined charge has been interchanged between the first first-node and the resonant circuit, replacing the first first-node by a second first-node of the plurality of first-nodes and interchanging charges between the second first-node and the resonant circuit; when a predetermined charge has been interchanged between the second first-node and the resonant circuit, replacing the second first-node by a first second-node of the plurality of second-nodes; when a predetermined charge has been interchanged between the first second-node and the resonant circuit, replacing the first second-node by a second second-node of the plurality of second-nodes and interchanging charges between the second second-node and the resonant circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A charge transfer apparatus comprising:
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an inductive section; an energy storage device coupled in series with the inductive section to a resonant circuit; a first power terminal having a plurality of first nodes; a plurality of first switches coupling the first power terminal with the resonant circuit; a second power terminal having a plurality of second nodes; a plurality of switches coupling the second power terminal with the resonant circuit; a control unit for controlling the operation of the plurality of first switches to interchange a first predetermined amount of charge between a first node of the plurality of first nodes and the resonant circuit and to interchange a second predetermined amount of charge between a second node of the plurality of first nodes and the resonant circuit, wherein a ratio of the first predetermined amount of charge interchanged between the resonant circuit and the first node and the second predetermined amount of charge interchange between the resonant circuit and the second node is equal to a ratio of the currents drawn from the first node and the second node; and a control unit for controlling the operation of the plurality of second switches to interchange a first predetermined amount of charge between a first second-node of the plurality of second nodes and the resonant circuit and to interchange a second predetermined amount of charge between a second second-node of the plurality of second nodes and the resonant circuit, wherein a ratio of the third predetermined amount of charge interchanged between the resonant circuit and the first node and the fourth predetermined amount of charge interchange between the resonant circuit and the second node is equal to a ratio of the currents delivered to the first node and the second node. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for transferring electric charge between a power source and a power sink having a second plurality of terminals, the method comprising:
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a first plurality of terminals connected to the power source; a second plurality of terminals connected to the power sink; a resonant circuit including a charge storage element connected in series with an inductive element; a plurality of input switches disposed between the first plurality of terminals and the resonant circuit; a plurality of output switches disposed between the resonant circuit and the second plurality of terminals; and a controller configured to; activate the plurality of input switches according to a first switching sequence such that charge is transferred from the first plurality of terminals to the resonant circuit by causing different pairs of the first plurality of terminals to be electrically connected to the resonant circuit at different times, and activate the plurality of output switches according to a second switching sequence such that charge is transferred from the resonant circuit to the second plurality of terminals by causing different pairs of the second plurality of terminals to be electrically connected to the resonant circuit at different times; wherein upon completion of transferring charge from the first plurality of terminals to the resonant circuit, a first voltage exists on the charge storage element and while transferring electric charge between the first power terminal and the second power terminal, a maximum voltage applied to the plurality of input switches and the plurality of output switches is less than the first voltage.
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Specification