METHOD AND CIRCUIT FOR POWER FACTOR CORRECTION

For the purpose of power factor correction, an inductor (7) is supplied with an input voltage (Vin), a controllable switch element (13) coupled with the inductor (7) being opened or closed to optionally charge or discharge the inductor (7). The switch element (13) is controlled depending on the dete...

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Bibliographische Detailangaben
1. Verfasser:	MITTERBACHER, Andre
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 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:	For the purpose of power factor correction, an inductor (7) is supplied with an input voltage (Vin), a controllable switch element (13) coupled with the inductor (7) being opened or closed to optionally charge or discharge the inductor (7). The switch element (13) is controlled depending on the detection of a zero crossing of the current through the inductor (7). If no such zero crossing is detected, the switch element (13) is controlled to carry out a charge or discharge process at least after expiry of a restart interval (Trestart), the restart interval being variable and being adapted to the respective internal mode of the power factor correction circuit (2).