| 摘要 |
A fuel cell power system, comprising a fuel cell which generates DC voltage; a plurality of ultracapacitors selectively electrically coupled with the fuel cell, and which each have an operational voltage range; first circuitry electrically coupling the fuel cell with the ultracapacitors and which maintains the respective ultracapacitors in the operational voltage range; and second circuitry which electrically couples and de-couples a number of the ultracapacitors to a load which has a voltage requirement, and wherein the number of ultracapacitors coupled to the load approximates the voltage requirement of the load.
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