Resonant converter with variable frequency controlled by...

Details Resonant converter with variable frequency controlled by... Resonant converter with variable frequency controlled by...

2009-04-02

2011-10-11

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S097000

Reexamination Certificate

active

08036001

ABSTRACT:
A converter and a driving method thereof are provided. The converter includes first and second switches, and generates a square wave signal according to operations of the first and second switches. The converter includes a first capacitor and a primary coil, and resonates a driving voltage by using a driving voltage with the first capacitor and the primary coil so as to generate a driving current. The converter includes a secondary coil that forms the primary coil and the transformer, and generates output power by rectifying a current and a voltage generated in the secondary coil. In addition, the converter detects the phase of the driving current, and increases switching frequencies of the first and second switches if a phase difference of the phase of the driving current and that of the driving voltage is smaller than a predetermined value.

REFERENCES:
patent: 4794506 (1988-12-01), Hino et al.
patent: 4939402 (1990-07-01), Hirayama et al.
patent: 6087782 (2000-07-01), Majid et al.
patent: 6166922 (2000-12-01), Kobori et al.
patent: 7218533 (2007-05-01), Radecker et al.
patent: 7382636 (2008-06-01), Baarman et al.
patent: 2009/0251929 (2009-10-01), Choi

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