POWER CONVERSION DEVICE, POWER-GENERATING SYSTEM, MOTOR DRIVE SYSTEM, AND POWER INTERCONNECTION SYSTEM

The present invention provides a small-sized power conversion device, a power-generating system, a motor drive system, and a power interconnection system. A power conversion device (101) has a configuration in which respective phases of a three-phase alternating current are star-connected, and inclu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KATOH, Shuji, ENDOH Tetsuo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	The present invention provides a small-sized power conversion device, a power-generating system, a motor drive system, and a power interconnection system. A power conversion device (101) has a configuration in which respective phases of a three-phase alternating current are star-connected, and includes star conversion units (150P, 150N) in which three star conversion legs (153R, 153S, 153T) each including two switches connected in series, and at least one capacitor (159) are connected in parallel, and unit converters (108, 109), each being connected to each of the star conversion legs (153R, 153S, 153T) in series. Connection points (NP1, NP2) at which the three star conversion legs (153R, 153S, 153T) are connected are neutral points of the star connection, and each phase of the three-phase alternating current is connected to a switch connection point (151R, 151S, 151T) between the two switches of each of the star conversion legs (153R, 153S, 153T) through the unit converter (108, 109).