POWER CONVERSION SYSTEM

• Main Authors: INABA HIROMI, YAMATO IKUO
• Format: Patent
• Language: English
• Published: 19.10.2006
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a power conversion system capable of minimizing the capacity of a smoothing capacitor in a DC intermediate circuit. SOLUTION: This power conversion system, having the smoothing capacitor 6 between a converter 1 and an inverter 2, includes a carrier generator 301 with a phase difference and is set with a predetermined phase difference Δ between a carrier CCfor PWM controlling the converter 1 and a carrier CIfor PWM controlling the inverter 2 to reduce the magnitude of a current flowing through the smoothing capacitor 6 by adjusting the phase difference Δ, thus minimizing the capacitance of the smoothing capacitor 6. COPYRIGHT: (C)2007,JPO&INPIT