Power converter

A power converter, and more particularly a switched AC/DC converter, is provided with an input current shaping (ICS) function. The ICS function is carried out by adjusting the conducting angle of the input current for a rectifier coupled to a central tap of a main transformer, thereby obtaining a hi...

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Bibliographische Detailangaben
1. Verfasser:	WANG KUO-JUNG
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 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 converter, and more particularly a switched AC/DC converter, is provided with an input current shaping (ICS) function. The ICS function is carried out by adjusting the conducting angle of the input current for a rectifier coupled to a central tap of a main transformer, thereby obtaining a higher power factor. Owing to the action of the ICS, the ripples in the feedback signal are usually larger. The ripples are used to modulate the switching frequency to effectively disperse and planarize the electromagnetic energy distribution of the power supply, and to suppress the electromagnetic interference problems of the power supply.