POWER FACTOR AND CREST FACTOR CIRCUIT

A power factor and crest factor correction circuit for a power distribution network of the type comprising a low power source for supplying a plurality of ports with an ac signal is disclosed. Each port comprises a rectifier bridge, a bulk storage capacitor and a power converter connected across the...

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Bibliographische Detailangaben
1. Verfasser:	BOTTRILL, JOHN
Format:	Patent
Sprache:	eng ; fre
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 CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	A power factor and crest factor correction circuit for a power distribution network of the type comprising a low power source for supplying a plurality of ports with an ac signal is disclosed. Each port comprises a rectifier bridge, a bulk storage capacitor and a power converter connected across the rectifier bridge, The power factor and crest factor correction circuit comprises an inductor, series connected between the rectifier bridge and the bulk capacitor, for reducing the current peaks in a rectified signal received from the rectifier bridge. The correction circuit also comprises diode means connected in parallel across the inductor for discharging the bulk capacitor whenever the voltage across the bulk capacitor exceeds the voltage of the rectified signal. As a result, a higher power factor is obtained for the dc signal applied to the power converter, and also the current peaks in the dc signal are substantially reduced.