Unity power factor control for dual active bridge converter

Details Unity power factor control for dual active bridge converter Unity power factor control for dual active bridge converter

1992-11-25

1994-10-11

Voeltz, Emanuel T.

Electric power conversion systems

Current conversion

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

363129, 323207, H02M 3335

Patent

active

053552946

ABSTRACT:
A dual active bridge converter, including high-frequency transformer-coupled input and output bridge converters, receives a rectified ac line voltage via a rectifier acting in a resistive mode and a small, high-frequency filter capacitor. A phase angle controller controls a phase shift between the voltages across the transformer windings such that high-efficiency dc-to-dc conversion is achieved, while maintaining unity power factor at the ac input, using high-density circuitry with small filter components and without adding additional front-end power factor correction circuitry.

REFERENCES:
patent: 5027264 (1991-06-01), De Doncker et al.
patent: 5224025 (1993-06-01), Divan et al.

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