SYSTEM FOR PRODUCING A POLYMER ELECTROLYTE FUEL CELL USING BIOGAS AS FUEL, AND METHOD FOR CONTROLLING SAME

摘要

The present invention relates to a system for producing a polymer electrolyte fuel cell using biogas as fuel and to a method for controlling same. The system for generating polymer electrolyte fuel cell using bio gas as fuel according to the present invention comprises: a temperature and humidity control unit; a biogas refining unit which removes impurities such as siloxane and hydrogen sulfide from the biogas; a biogas concentration unit which concentrates the biogas such that the methane purity becomes 95% to 100%; a reforming unit which reforms the biogas to hydrogen to obtain reformed hydrogen fuel; a fuel cell unit which produces electric power using the reformed hydrogen fuel; an integrated control unit which controls the operations of the temperature and humidity control unit, biogas refining unit, biogas concentration unit, the reforming unit, and the fuel cell unit; and a gas analyzing unit which analyzes the biogas concentrated by the biogas concentration unit and which enables the biogas to undergo the gas refining and gas concentration processes again if the methane purity is not 95% to 100%. According to the present invention, the biogas consists of methane like natural gas, and is used as an energy source to produce electric power from a fuel cell, replacing natural gas in order to reduce fuel costs and thus reduce overall costs.