FREQUENCY CONVERTER

PROBLEM TO BE SOLVED: To provide a frequency converter that can stably be operated without intermitting the current even under a lightly loaded condition. SOLUTION: The output side of the first converter composed of a forward conversion part 1-1, a DC reactor 2-1 and a reverse conversion part 3-1, a...

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Bibliographische Detailangaben
1. Verfasser:	ITO KATSURO
Format:	Patent
Sprache:	eng
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a frequency converter that can stably be operated without intermitting the current even under a lightly loaded condition. SOLUTION: The output side of the first converter composed of a forward conversion part 1-1, a DC reactor 2-1 and a reverse conversion part 3-1, and the output side of the second converter composed of a forward conversion part 3-1, a DC reactor 2-2 and a reverse conversion part 3-2 are connected in the vicinity of a connecting point of a capacitor 4b of a load 4. Only one of the two converters is operated until an output current of the frequency converter exceeds a prescribed value, and the other makes the reverse conversion part on standby in a bypass pair state. When the output current exceeds the prescribed value, both the tow converters are parallel-operated, thereby allowing the converter to be operated without intermitting the current even under the light load condition. COPYRIGHT: (C)2005,JPO&NCIPI