Method and apparatus for controlling cogeneration system

• Main Author: YURI NOBUYUKI
• Format: Patent
• Language: English
• Published: 23.08.2011
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING COMBUSTION ENGINES; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR; STARTING OF COMBUSTION ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

In an apparatus (and a method) for controlling a cogeneration system equipped with a generation unit having a generator connectable to an AC power feed line between a commercial power network and an electrical load and an internal combustion engine for driving the generator, and a heat exchanger that exchanges heat with coolant of the engine with exhaust heat from the engine to warm up the coolant, there are provided with an exhaust gas temperature sensor that detects temperature of exhaust gas passing the heat exchanger, a temperature comparator that compares the exhaust gas temperature with a predetermined value and an operation stopper that stops the operation of the cogeneration system when the exhaust gas temperature is found to be less than the predetermined value. With this, it becomes possible to prevent moisture in the exhaust gas from being condensed and accumulated in the exhaust-gas heat exchanger.