Grid-tied power converter for battery energy storage composed of 2-stage DC-DC converter

Author

Byung-Moon Han

Author_Institution

Dept. of Electr. Eng., Myongji Univ., Yongin, South Korea

fYear

2013

fDate

21-25 July 2013

Firstpage

1

Lastpage

5

Abstract

This paper proposes a new grid-tied power converter for battery energy storage, which is composed of a 2-stage DC-DC converter and a PWM inverter. The 2-stage DC-DC converter is composed of an LLC resonant converter connected in cascade with a 2-quadrant hybrid-switching chopper. The LLC resonant converter operates in constant duty ratio, while the 2-quadrant hybrid-switching chopper operates in variable duty ratio for voltage regulation. The operation of proposed system was verified through computer simulations. Based on computer simulations, a hardware prototype was built and tested to confirm the technical feasibility of proposed system. The proposed system could have relatively higher efficiency and smaller size than the existing system.

Keywords

DC-DC power convertors; PWM invertors; energy storage; power grids; resonant power convertors; voltage control; 2-quadrant hybrid-switching chopper; 2-stage DC-DC converter; LLC resonant converter; PWM inverter; battery energy storage; grid-tied power converter; voltage regulation; DC-DC power converters; Energy storage; Insulated gate bipolar transistors; Inverters; Magnetic resonance; Pulse width modulation; Switches; 2-quadrant hybrid-switching chopper; 2-stage DC-DC converter; LLC resonant converter; battery energy storage; grid-tied power converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting (PES), 2013 IEEE

Conference_Location

Vancouver, BC

ISSN

1944-9925

Type

conf

DOI

10.1109/PESMG.2013.6672602

Filename

6672602