FAN-DRIVEN GENERATOR

• Main Authors: KAJI SHINDO, FUJITA ATSUSHI, RICKY ELSON, NODA MANABU
• Format: Patent
• Language: English
• Published: 19.08.2013
• Subjects: BLASTING; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

PROBLEM TO BE SOLVED: To facilitate control by a fan-driven generator to maintain a high output against change in wind speed.SOLUTION: A converter control section 5 of a fan-driven generator 1 includes a duty ratio indication section 52 which indicates a duty ratio, and a change amount determination section 54 which selects a positive first change amount or negative second change amount as a change amount of a duty ratio indication value from the duty ratio indication section 52 corresponding to last sampling, the absolute value of the first change amount being smaller than the second change amount. The change amount determination section 54 selects a change amount having the same sign as a reference sign which is the positive or negative sign of the change amount of the duty ratio indication amount corresponding to the last sampling between the first change amount and second change amount when output electric power is higher than reference electric power as output electric power found in the last sampling, and a change amount having the sign different from the reference sign when the output electric power is smaller than the reference electric power.