A novel single stage AC/DC converter for fast charging applications with unity power factor

Author

Fei Wang ; Huang, A.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

fYear

2014

fDate

16-20 March 2014

Firstpage

1860

Lastpage

1865

Abstract

This paper introduces a single phase AC/DC converter with unity power factor input at grid side. The proposed topology consists of a diode bridge followed by an asymmetrical DAB circuit working in boost mode. The DAB is utilized to regulate both DC output voltage and averaged input current. With single-side PWM modulation, the DAB can possess advantages such as lower RMS currents and larger soft switching range. Zero cycling current can also be achieved to reduce power losses. Simulation and some experimental test have been carried out to verify the effectiveness of proposed converter.

Keywords

AC-DC power convertors; PWM power convertors; bridge circuits; diodes; electric current control; power factor; power grids; secondary cells; switching convertors; voltage control; zero current switching; zero voltage switching; DC output voltage regulation; RMS current; asymmetrical DAB circuit; averaged input current regulation; battery charging system; boost converter; diode bridge; dual active bridge; fast charging application; grid side; power loss reduction; single stage single phase AC-DC converter; single-side PWM modulation; soft switching; unity power factor; zero cycling current; Bridge circuits; DC-DC power converters; Equations; Mathematical model; Pulse width modulation; Reactive power; Soft switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE

Conference_Location

Fort Worth, TX

Type

conf

DOI

10.1109/APEC.2014.6803559

Filename

6803559