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Combined heat and power cogeneration system for a fuel cell, and control method thereof

A fuel cell and combined heat and power technology, which is applied in the direction of fuel cells, combined heat and power, and fuel cell applications, can solve problems such as economic constraints, and achieve the effects of improving economy, increasing or decreasing production power, and eliminating power imbalances

Active Publication Date: 2012-01-04
DOOSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the fuel cell system is in operation, its economics will be limited

Method used

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  • Combined heat and power cogeneration system for a fuel cell, and control method thereof
  • Combined heat and power cogeneration system for a fuel cell, and control method thereof
  • Combined heat and power cogeneration system for a fuel cell, and control method thereof

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement them. However, the present invention can be implemented in various ways and is not limited to the embodiments described here. In order to clarify the present invention, parts irrelevant to the description are omitted from the drawings, and the same reference numerals are used throughout the description for the same or similar components.

[0019] figure 1 is a block diagram schematically showing a fuel cell cogeneration system according to an embodiment of the present invention. refer to figure 1 It can be seen that a fuel cell cogeneration system 100 (hereinafter referred to as “system”) of an embodiment includes: a fuel cell 10 , a power converter 20 , a power distributor 30 , a waste heat recovery device 40 and a fuel cell controller 50 .

[0020] The fuel cell includes, for example: a fuel...

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Abstract

A combined heat and power cogeneration system for a fuel cell according to the present invention comprises: a fuel cell that produces direct current power using fuel gas containing hydrogen and air containing oxygen; a power converter which converts the direct current power produced by the fuel cell into alternating current power; a power divider which selects commercial power from an electric power system and power produced by the fuel cell and divides the selected power into loads; a waste heat recovery unit for recovering heat generated by the fuel cell; and a fuel cell controller which controls the fuel cell, the power converter, the power divider, and the waste heat recovery unit, and controls the commercial power such that the price of the commercial power and the price of the produced power coincide with each other at a preset level.

Description

technical field [0001] The present invention relates to a fuel cell combined heat and power system, more particularly, to a fuel cell combined heat and power system and its control that eliminates the power imbalance between the fuel cell's production power and the user's load power, thereby having economical efficiency method. Background technique [0002] For example, fuel cells use hydrocarbon-based power generation raw materials (LNG, LPG, etc.) to replace hydrogen-rich reformed gas in the fuel processing device, and then supply the reformed gas together with oxygen in the air to the fuel cell stack, and then through the electrochemical reaction Direct current is produced and converted to alternating current by means of a power converter, and heat generated during power production is recovered and stored in water in a heat storage tank. [0003] Korean Patent No. 0661920 discloses a fuel cell system capable of operating according to load. The fuel cell system includes:...

Claims

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Application Information

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IPC IPC(8): H01M8/04F24D10/00F24D18/00
CPCY02B90/16Y02E60/50H01M8/04992F24D2200/16Y02E20/14F24H2240/10H01M2250/405H01M2250/40Y02E60/56H01M8/0494Y02P80/15Y02B90/10F24D2101/30F24D18/00H01M8/04F24D10/00
Inventor 金淏硕洪炳善辛美男
Owner DOOSAN CORP
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