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US 7,974,106 B2Granted
Ripple cancellation
AssigneeBloom Energy Corporation
InventorsRanganathan Gurunathan, Ramesh Srinivasan, Pavana Kumar
Life of this patent
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Abstract
Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the present invention relate to methods and systems usable to reduce ripple currents in fuel cells.
Claims7
An architecture for a fuel cell power conditioning system comprising:
- a first fuel cell segment arranged to have a positive terminal and a negative terminal;
- a first DC/DC converter, an input of which is connected to the positive terminal of the first fuel cell segment and the negative terminal of the first fuel cell segment;
- and
- a second DC/DC converter, an input of which is connected to the positive terminal of the first fuel cell segment and the negative terminal of the first fuel cell segment;
- a second fuel cell segment arranged to have a positive terminal and a negative terminal, wherein the positive terminal of the second fuel cell segment is electrically connect to the negative terminal of the first fuel cell segment;
- a third DC/DC converter, an input of which is connected to the positive terminal of the second fuel cell segment and the negative terminal of the second fuel cell segment;
- and
- a fourth DC/DC converter, an input of which is connected to the positive terminal of the second fuel cell segment and the negative terminal of the second fuel cell segment;
- wherein the positive output terminals of the first and third DC/DC converters are connected to a common positive voltage bus,
- wherein the negative output terminals of the second and fourth DC/DC converters are connected to a common negative voltage bus, and
- wherein the negative output terminals of the of the first and third DC/DC converters and the positive output terminals of the second and fourth DC/DC converters are connected to a neutral bus.
8 more elements
Dependencies are inferred from the claim text.