POWER SUPPLY CONTROL FOR POWER GENERATOR
First Claim
Patent Images
1. A system for connecting a fuel cell stack to an A.C. grid to provide power thereto, comprising:
- a D.C. to D.C. converter to be coupled to the fuel cell stack;
a voltage regulated D.C. bus coupled to the D.C. to D.C. converter;
a bidirectional inverter coupled to the D.C. bus, and to be coupled between the D.C. bus and the A.C. grid; and
at least one D.C. auxiliary load of the fuel cell stack coupled to the D.C. bus.
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Abstract
A system (100) for connecting a fuel cell stack to an A.C. grid to provide power thereto is disclosed in which a voltage regulated D.C. bus (110) is provided to be coupled to the fuel cell stack, a bidirectional inverter (120) is coupled to the D.C. bus (110), and is to be coupled between the D.C. bus (110) and the A.C. grid. At least one D.C. auxiliary load (130) of the fuel cell stack is provided coupled to the D.C. bus (110). A D.C. to D.C. converter (140) is provided between the fuel cell stack and the D.C. bus (110)
44 Citations
30 Claims
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1. A system for connecting a fuel cell stack to an A.C. grid to provide power thereto, comprising:
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a D.C. to D.C. converter to be coupled to the fuel cell stack;
a voltage regulated D.C. bus coupled to the D.C. to D.C. converter;
a bidirectional inverter coupled to the D.C. bus, and to be coupled between the D.C. bus and the A.C. grid; and
at least one D.C. auxiliary load of the fuel cell stack coupled to the D.C. bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling a power generation system including a fuel cell stack supplying an A.C. grid, the method comprising providing power to a voltage regulated D.C. bus, and at least one D.C. auxiliary load of the fuel cell stack connected to the D.C. bus, wherein:
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in a first mode, voltage regulated D.C. power is provided to the at least one D.C. auxiliary load from the A.C. grid, via the voltage regulated D.C. bus; and
in a second mode, voltage regulated D.C. power is provided to the at least one D.C. auxiliary load from the fuel cell stack, via the voltage regulated D.C. bus. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A power generating device, comprising a system for connecting a fuel cell stack to an A.C. grid to provide power thereto, the system comprising:
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a D.C. to D.C. converter to be coupled to the fuel cell stack;
a voltage regulated D.C. bus coupled to the D.C. to D.C. converter;
a bidirectional inverter coupled to the D.C. bus, and to be coupled between the D.C. bus and the A.C. grid; and
at least one D.C. auxiliary load of the fuel cell stack coupled to the D.C. bus. - View Dependent Claims (30)
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Specification