Power source device

Details Power source device Power source device

1998-06-23

1999-07-27

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 80, 363124, 315247, 315307, H02M 5458

Patent

active

059301279

ABSTRACT:
A power source device is so arranged that one of switching elements forming a plurality of power conversion switching circuits which is used in common during each switching cycle is made to have a switching period in which mainly a current is taken up from a power source of first one of the switching circuits, the switching period being varied in a zone in which an input voltage is higher than a predetermined voltage in a cycle of input voltage waveform. Any distortion of input current waveform occurring around lower voltage period of commercial AC source is thereby reduced, in the power source device wherein the power conversion switching circuits employ commonly the switching elements.

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patent: 5063490 (1991-11-01), Maehara et al.
patent: 5274540 (1993-12-01), Maehara
patent: 5459651 (1995-10-01), Maehara
patent: 5712536 (1998-01-01), Haas et al.
patent: 5737207 (1998-04-01), Uratani et al.
patent: 5777861 (1998-07-01), Shimizu et al.

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