Back to results
US 11,108,333 B2Granted
DC-DC converters
AssigneeHamilton Sundstrand Corporation
InventorsFrank Z. Feng, Christopher J. Courtney
Life of this patent
Estimating the term…
Abstract
A system includes a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device. The system includes at least one ultra-capacitor connected across the first pair of input/output lines.
Claims13
A system comprising:
- a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device;
- and
- at least one ultra-capacitor connected across the first pair of input/output lines, wherein the first pair of input/output lines is on a low voltage side of the DC-DC power converter, wherein the second pair of input/output lines is on a high voltage side of the DC-DC power converter, and wherein the at least on ultra-capacitor includes a plurality of ultra-capacitors connected in series with one another across the low voltage side of the DC-DC power converter, wherein the plurality of ultra-capacitors includes eleven or twelve 2.5V ultra-capacitors for DC-DC power conversion between 28V on the low voltage side and a higher voltage on the high voltage side.
A method comprising:
- converting between a high DC voltage and a low DC voltage in a power converter with a high voltage side and low voltage side, wherein ripple current in a capacitor on the low voltage side is within an order of magnitude (within a factor of 10) of current in a load powered by the power converter, wherein the low voltage side is configured for 28V, wherein the high voltage side is configured for 540V, and wherein the ripple current and load current are equal to each other.
A system comprising:
- a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device;
- and
- at least one ultra-capacitor connected across the first pair of input/output lines, wherein the first pair of input/output lines is on a low voltage side of the DC-DC power converter, wherein the second pair of input/output lines is on a high voltage side of the DC-DC power converter, wherein the at least on ultra-capacitor includes a plurality of ultra-capacitors connected in series with one another across the low voltage side of the DC-DC power converter, wherein the low voltage side includes a set of four switching devices connected across the first pair of input/output lines for switching current direction in the first pair of input/output lines, the system further comprising:
- a transformer connecting between the high voltage side and the low voltage side for stepping current down from the high voltage side to the low voltage side, wherein the set of four switching devices connect between the transformer and the first pair of input/output lines, wherein the four switching devices are a first set of four switching devices and further comprising a second set of four switching devices connecting between the second pair of input/output lines, wherein the second set of four switching devices connect between the transformer and the second pair of input/output lines, wherein the transformer is configured to convert between 28V on the low voltage side and 540V on the high voltage side.
1 more element
Dependencies are inferred from the claim text.