Systems and methods for capacitor charge extraction
AssigneeRosemount Aerospace Inc.
InventorsStephen Savulak, William A. Veronesi
Life of this patent
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Abstract
A system for providing electrical power to a load includes a boost converter with an input and an output. The boost converter is configured to receive power at a first voltage at the input, and to supply power at a higher second voltage from the output. A capacitor, e.g., a super capacitor, is operatively connected between the output of the boost converter and a ground node. A first switch is operatively connected between the first input node and the output of the boost converter for switching between a first state connecting the capacitor to the output of the boost converter and a second state connecting the capacitor to supply input voltage to the input of the boost converter.
Claims14
A system for providing electrical power to a load comprising:
- a boost converter with an input and an output;
- a storage device operatively connected between the output of the boost converter and a ground node;
- and
- a first switch operatively connected between the first input node and the output of the boost converter, the switch having a first state connecting the energy storage device to the output of the boost converter and a second state connecting the energy storage device to supply input voltage to the input of the boost converter.
A method of supplying power comprising:
- supplying power to a load in a first state of a power supply system, wherein the first state includes:
- powering a load from a power source connected to an input of a boost converter, wherein the output of the boost converter is connected to the load to raise the voltage from the power source to above a minimum acceptable level for the load;
- charging a storage device connected between the output of the boost converter and a ground node when the output voltage of the boost converter is higher than the voltage of the storage device;
- and
- powering the load from the storage device when the voltage of the storage device is higher than the output voltage of the boost converter;
- and
- switching to a second state of the power supply system to supply power to the load when power from the power source is insufficient and the voltage of the storage device is below the minimum acceptable level for the load, wherein switching to the second state includes:
- disconnecting the power source from the boost converter;
- and
- connecting the storage device to the input of the boost converter to supply power to the load from the storage device.
Dependencies are inferred from the claim text.