Power source system and control method thereof

A control apparatus in a power source system including:

• a chemical reaction unit receiving at least supply of fuel for power generation to produce a gas for power generation;
• a generator unit receiving the gas for power generation, reacting a part of the gas for power generation to generate power, and ejecting unreacted part in the gas for power generation as an offgas;
• and a heating apparatus receiving supply of the offgas and a fuel for combustion, and setting the chemical reaction unit to a predetermined temperature by a heat quantity generated by a combustion reaction using a combustion component in the offgas and the fuel for combustion, comprising:
• a flow meter measuring a flow rate of the gas for power generation supplied to the generator unit;
• a calculator calculating the quantity of the combustion component in the offgas based on a value of a flow rate of the gas for power generation, the value of the flow rate measured by the flow meter, and a value of power generated by the generator unit;
• and
• a controller controlling a heat quantity generated by the heating apparatus in order to maintain a temperature of the chemical reaction unit according to a change of the quantity of the combustion component in the offgas, the quantity calculated by the calculator.

A control method of a power source system including:

• a chemical reaction unit receiving supply of fuel for power generation to produce a gas for power generation;
• a generator unit receiving supply of the gas for power generation, reacting a part of the gas for power generation to generate power, and ejecting unreacted part in the gas for power generation as an offgas;
• and a heating apparatus receiving supply of the offgas and a fuel for combustion, and setting the chemical reaction unit to a predetermined temperature by a heat quantity generated by a combustion reaction using a combustion component in the offgas and the fuel for combustion;
• comprising the steps of:
• calculating the quantity of the combustion component in the offgas based on a flow rate of the gas for power generation supplied to the generator unit, and a value of power generated by the generator unit;
• and
• controlling a heat quantity generated by the heating apparatus in order to maintain a temperature of the chemical reaction unit steady according to a change of the quantity of the combustion component in the offgas, the quantity calculated in a step to calculate the quantity of the combustion component in the offgas.