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US 11,685,536 B2Granted
Fuel cells configured to deliver bi-polar high voltage DC power
AssigneeTextron Innovations Inc.
InventorJoseph Dean Rainville
Life of this patent
Estimating the term…
Abstract
A fuel-cell system at 540 VDC for powering an electrical load of a rotorcraft with a first fuel cell and a second fuel cell. Each fuel cell is configured identically and features a positive electrical node and a negative electrical node. Each fuel cell is configured to provide one half of the electrical load of the rotorcraft and one half of the voltage of the electrical load.
Claims15
A fuel-cell system for powering an electrical load of a rotorcraft, comprising:
- a first fuel cell having a positive node and a negative node;
- a second fuel cell having a positive node and a negative node, the positive node of the second fuel cell being electrically coupled to the negative node of the first fuel cell;
- and
- a contactor coupling the positive node of the first fuel cell to the electrical load and coupling the negative node of the second fuel cell to the electrical load;
- wherein each fuel cell is coupled to the electrical load of the rotorcraft without a converter or other power electronics;
- and
- wherein each fuel cell is configured to provide one half of a voltage required by the electrical load.
4 more elements
A fuel-cell system for powering an electrical load of a rotorcraft, comprising:
- a first fuel cell having;
- a positive node;
- and
- a negative node;
- and
- a second fuel cell having;
- a positive node;
- and
- a negative node;
- wherein the negative node of the first fuel cell is electrically coupled to the positive node of the second fuel cell;
- wherein the electrical load is coupled without a converter or other power electronics to the positive node of the first fuel cell and the negative node of the second fuel cell;
- and
- wherein the first fuel cell and the second fuel cell provide similar voltage.
10 more elements
Dependencies are inferred from the claim text.