Power distribution architecture with series-connected bus converter
First Claim
1. A method of delivering power comprising:
- providing a source adapted to deliver power at a DC source voltage, VS, where the source voltage may vary over a first voltage range;
providing a first power conversion stage having an input circuit and an output circuit, the first power conversion stage being adapted over the first voltage range to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio, KDC, at an output current, wherein an input voltage VIN is applied to the input circuit and an output voltage VOUT is produced by the output of the first power conversion stage, and wherein the substantially fixed voltage transformation ratio can be represented as KDC=VOUT/VIN;
connecting the input circuit to receive power from the source;
providing a power regulation stage having a regulator input connected to receive power from the output circuit of the first power conversion stage at the output voltage, VOUT, and a regulator output connected to supply power to a respective load at a load voltage, VLoad, the power regulation stage being separated by a distance from the first power conversion stage;
providing a galvanic connection between the input circuit of the first power conversion stage and the output circuit of the first power conversion stage;
using an inductive component and one or more power switches in the input circuit, the output circuit, or both of the first power conversion stage;
reducing a voltage across the one or more switches prior to turning ON said one or more switches using a current flowing in the inductive component to charge and discharge capacitances in the first power conversion stage; and
setting the voltage transformation ratio, KDC=VOUT/VIN of the first power conversion stage to a value that is less than 1.
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Accused Products
Abstract
Apparatus for power conversion are provided. One apparatus includes a power converter including an input circuit and an output circuit. The power converter is configured to receive power from a source for providing power at a DC source voltage VS. The power converter is adapted to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio KDC=VOUT/VIN at an output current, wherein VIN is an input voltage and VOUT is an output voltage. The input circuit and at least a portion of the output circuit are connected in series across the source, such that an absolute value of the input voltage VIN applied to the input circuit is approximately equal to the absolute value of the DC source voltage VS minus a number N times the absolute value of the output voltage VOUT, where N is at least 1.
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Citations
21 Claims
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1. A method of delivering power comprising:
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providing a source adapted to deliver power at a DC source voltage, VS, where the source voltage may vary over a first voltage range; providing a first power conversion stage having an input circuit and an output circuit, the first power conversion stage being adapted over the first voltage range to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio, KDC, at an output current, wherein an input voltage VIN is applied to the input circuit and an output voltage VOUT is produced by the output of the first power conversion stage, and wherein the substantially fixed voltage transformation ratio can be represented as KDC=VOUT/VIN; connecting the input circuit to receive power from the source; providing a power regulation stage having a regulator input connected to receive power from the output circuit of the first power conversion stage at the output voltage, VOUT, and a regulator output connected to supply power to a respective load at a load voltage, VLoad, the power regulation stage being separated by a distance from the first power conversion stage; providing a galvanic connection between the input circuit of the first power conversion stage and the output circuit of the first power conversion stage; using an inductive component and one or more power switches in the input circuit, the output circuit, or both of the first power conversion stage; reducing a voltage across the one or more switches prior to turning ON said one or more switches using a current flowing in the inductive component to charge and discharge capacitances in the first power conversion stage; and setting the voltage transformation ratio, KDC=VOUT/VIN of the first power conversion stage to a value that is less than 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification