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US 7,887,967 B2Granted
Power source system and control method thereof
AssigneeCasio Computer Co., Ltd.
InventorHiroyasu Bitoh
Life of this patent
Estimating the term…
Abstract
A power source system comprises: a chemical reaction unit producing a gas for power generation; a generator unit 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; a heating apparatus provided in the chemical reaction unit setting the chemical reaction unit to a predetermined temperature by a heat quantity by a combustion reaction using a combustion component of the offgas and the fuel for combustion; and a controller calculating a quantity of the combustion component in the offgas to control a heat quantity generated by the heating apparatus in order to maintain the predetermined temperature of the chemical reaction unit according to a calculated change of the quantity of the combustion component in the offgas.
Claims19
A power source system, comprising:
- a chemical reaction unit which receives a supply of fuel for power generation to produce a gas for power generation;
- a generator unit which receives a supply of the gas for power generation, reacts a part of the gas for power generation to generate power, and ejects an unreacted part of the gas for power generation as an offgas;
- a heating apparatus, provided in the chemical reaction unit, which receives a supply of the offgas and a fuel for combustion, and sets 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;
- a flow meter which measures a flow rate of the gas for power generation supplied to the generator unit;
- a calculator which calculates a residual hydrogen quantity of the combustion component in the offgas based on a value of the flow rate of the gas for power generation supplied to the generator unit, and a value of power generated by the generator unit;
- a supply quantity adjuster which adjusts a quantity of the fuel for combustion to be supplied to the heating apparatus;
- and
- a controller which controls the heat quantity generated by the heating apparatus by controlling the supply quantity adjuster;
- wherein the controller calculates a difference value between (i) a value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity by the calculator and (ii) a previous value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity by the calculator, and the controller controls the supply quantity adjuster based on a setting value of the supply quantity adjuster corresponding to the difference value so that a next difference value becomes zero.
6 more elements
A control apparatus in a power source system including:
- a chemical reaction unit which receives at least a supply of fuel for power generation to produce a gas for power generation;
- a generator unit which receives the gas for power generation, reacts a part of the gas for power generation to generate power, and ejects an unreacted part of the gas for power generation as an offgas;
- and a heating apparatus which receives a supply of the offgas and a fuel for combustion, and sets 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, the control apparatus comprising:
- a flow meter which measures a flow rate of the gas for power generation supplied to the generator unit;
- a calculator which calculates a residual hydrogen quantity of the combustion component in the offgas based on a value of the flow rate of the gas for power generation, and a value of power generated by the generator unit;
- a supply quantity adjuster which adjusts a quantity of the fuel for combustion to be supplied to the heating apparatus;
- and
- a controller which controls the heat quantity generated by the heating apparatus by controlling the supply quantity adjuster;
- wherein the controller calculates a difference value between (i) a value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity by the calculator and (ii) a previous value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity by the calculator, and the controller controls the supply quantity adjuster based on a setting value of the supply quantity adjuster corresponding to the difference value so that a next difference value becomes zero.
6 more elements
A control method of a power source system including:
- a chemical reaction unit which receives a supply of fuel for power generation to produce a gas for power generation;
- a generator unit which receives a supply of the gas for power generation, reacts a part of the gas for power generation to generate power, and ejects an unreacted part of the gas for power generation as an offgas;
- a heating apparatus which receives a supply of the offgas and a fuel for combustion, and sets 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;
- and a supply quantity adjuster which adjusts a quantity of the fuel for combustion to be supplied to the heating apparatus, the method comprising:
- calculating a residual hydrogen 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 the heat quantity generated by the heating apparatus by calculating a difference value between (i) a value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity and (ii) a previous value of the residual hydrogen quantity obtained by the calculating of the residual hydrogen quantity, and controlling the supply quantity adjuster based on a setting value of the supply quantity adjuster corresponding to the difference value so that a next difference value becomes zero.
4 more elements
Dependencies are inferred from the claim text.