Family of zero voltage switching DC to DC converters with couple

Details Family of zero voltage switching DC to DC converters with couple Family of zero voltage switching DC to DC converters with couple

1997-01-24

1998-06-30

Nappi, Robert

Electric power conversion systems

Current conversion

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

363 98, 363 41, 363132, 323235, 323222, 323224, H02M 3335

Patent

active

057743460

ABSTRACT:
A family of power converter is invented. Each of these converter accomplishes zero voltage switching to minimize switching losses. Also by the application of coupled inductor, conduction losses can also be minimized. The basic embodiment comprises of two switches connected across the input source. The switches are driven by asymmetrical driving pulses with variable duty cycle. A capacitor is connected to the node joining the two switches and an inductor is in turn connected to it. This inductor is connected to an output filter through a diode. The output filter comprises of an inductor and capacitor and diode combinations. This output filter inductor has two coupled windings which minimize conduction losses. The basic embodiment can be modified to provide converter with boost output or negative output. The embodiment can also be modified for isolated converter with transformer in both half bridge and full bridge circuit.

REFERENCES:
patent: 4855888 (1989-08-01), Henze et al.
patent: 5066900 (1991-11-01), Bassett
patent: 5159541 (1992-10-01), Jain
patent: 5402329 (1995-03-01), Wittenbreder, Jr.
patent: 5539630 (1996-07-01), Pietkiewicz et al.

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