POWER SUPPLY UNIT FOR USE WITH AN AIRCRAFT ELECTRICAL SYSTEM
First Claim
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1. A power supply unit for use with an aircraft power bus, comprising:
- a connection circuit being electrically coupled to the aircraft power bus and providing the power supply unit with both charge and discharge paths; and
an energy storage circuit being electrically coupled to the connection circuit, wherein during charging periods the energy storage circuit receives charge from the aircraft power bus through the charge path, and during discharging periods the energy storage circuit provides charge to the aircraft power bus through the discharge path.
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Abstract
A power supply unit that provides uninterrupted power to an aircraft power bus during switchovers of the aircraft bus from one power source to another. The power supply unit includes circuitry to distinguish between loss of bus power due to switchovers between power sources and loss of bus power due to shutdown of the aircraft. The power supply unit includes a low voltage lockout circuit to interrupt the supply of power when the aircraft bus voltage falls below a minimum value.
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Citations
16 Claims
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1. A power supply unit for use with an aircraft power bus, comprising:
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a connection circuit being electrically coupled to the aircraft power bus and providing the power supply unit with both charge and discharge paths; and an energy storage circuit being electrically coupled to the connection circuit, wherein during charging periods the energy storage circuit receives charge from the aircraft power bus through the charge path, and during discharging periods the energy storage circuit provides charge to the aircraft power bus through the discharge path. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power supply unit for use with an aircraft power bus, comprising:
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a connection circuit having positive and negative input terminals for connecting to two corresponding terminals of an aircraft power bus; and an energy storage circuit electrically connected to said connection circuit; wherein said connection circuit provides separate charging and discharging paths between said input terminals and said energy storage circuit, and wherein said connection circuit includes an impedance in said charging path and a switch in said discharge path; and wherein said power supply unit controls operation of said switch based on voltage differences between two nodes located at opposite ends of said impedance. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification