Hybrid propulsion unit for an aircraft
AssigneeSafran Helicopter Engines
InventorsThomas Klonowski, Thomas Bruno Barraco
Life of this patent
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Abstract
A hybrid propulsion unit for an aircraft with multi-rotor rotary wings includes an electrical generator driven by an internal combustion engine, a rectifier configured to convert an AC current sent by the electrical generator into DC current, a DC-AC converter, an electrical network connecting the rectifier to the converter and including a high-voltage DC current bus, electric motors powered by propeller converters coupled to the electric motors, electrical energy storage connected to the electrical network, the electrical storage including at least one primary storage element and at least one secondary storage element.
Claims17
A hybrid propulsion unit for an aircraft with multi-rotor rotary wing, comprising:
- an internal combustion engine;
- an electric generator coupled to the internal combustion engine such that in operation the internal combustion engine drives the electric generator;
- a rectifier connected to the electric generator and configured to convert an alternative current delivered by the electric generator into a direct current;
- means for converting direct current into alternative current;
- an electrical network connecting the rectifier to the conversion means, the electrical network comprising a high voltage direct current bus;
- electric motors connected to the conversion means so that in operation the conversion means supply the electric motors with alternative current;
- propellers coupled to the electric motors so that in operation the electric motors drive the propellers;
- electrical energy storage means connected to the electrical network, said storage means comprising at least one primary storage element and at least one secondary storage element, and, wherein said at least one primary storage element is connected in series with the electrical network, and said at least one secondary storage element is connected in parallel with the electrical network.
Dependencies are inferred from the claim text.