Power supply for aircraft systems
AssigneeHamilton Sundstrand Corporation
InventorRajkumar Sengodan
Life of this patent
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Abstract
Disclosed is a direct current power supply. The direct current power supply includes a voltage output defining a voltage rail and a ground. The direct current power supply includes a holdup capacitor operable to conduct with the voltage output. The direct current power supply includes a redundant power supply connected in series with the holdup capacitor between the voltage rail and the ground of the voltage output to provide the voltage output. The direct current power supply includes a first switch disposed between the holdup capacitor and the redundant power supply operable to create a conductive path between the holdup capacitor and the redundant power supply.
Claims20
A direct current power supply:
- a voltage output defining a voltage rail and a ground;
- a holdup capacitor operable to conduct with the voltage output;
- a redundant power supply connected in series with the holdup capacitor between the voltage rail and the ground of the voltage output to provide the voltage output;
- and
- a first switch disposed between the holdup capacitor and the redundant power supply operable to create a conductive path between the holdup capacitor and the redundant power supply.
A method for maintaining a voltage output of a direct current power supply having a holdup capacitor connected to provide the voltage output and a redundant power supply comprising:
- measuring the voltage output of the direct current power supply associated with the holdup capacitor;
- closing a first switch associated with a redundant power supply to provide the voltage output with the holdup capacitor and the redundant power supply based on the voltage output falling less than a voltage threshold;
- and
- opening a second switch associated with the holdup capacitor and a ground of the voltage output.
A direct current power supply:
- a voltage output defining a ground;
- a holdup capacitor sized to maintain the voltage output greater than a voltage threshold during a time period;
- a redundant power supply connected in series with the holdup capacitor to provide the voltage output;
- and
- a first switch disposed between the holdup capacitor and the redundant power supply operable to conduct with the holdup capacitor and the redundant power supply;
- and
- a controller having logical instructions that close the first switch based on the voltage output falling below the voltage threshold.
Dependencies are inferred from the claim text.