ELECTRIC POWER SUPPLY SYSTEM, IN PARTICULAR IN AN AIRCRAFT
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United States of America Patent
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Issued Date -
Aug 25, 2011
app pub date -
Oct 6, 2009
filing date -
Oct 29, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fail-safe electrical power supply system (11), in particular in an aircraft, does not require any hardware, control-engineering or wiring complexity for an emergency power supply, which need be started up only when required, if, on the output side, the normal supply has parallel-connected supply modules (13) such as rechargeable batteries or, in particular, fuel cells, which are each loaded as far as possible at the optimum operating point or efficiency, but in any case below their maximum load capacity. If there are a sufficient number of modules (13), on the basis of this power difference, the spare power and energy which are kept available are sufficient to continuously satisfy the power demand of the connected loads, provided that only at least one module (13) remains serviceable. A module (13) which has not failed is then admittedly operated at lower efficiency but still in the permissible low range, ensuring that the operating supply to the loads is maintained without interruption.
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