A battery energy storage system with a modular push-pull PWM converter

Author

Hagiwara, Makoto ; Akagi, Hirofumi

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

747

Lastpage

754

Abstract

This paper presents a battery energy storage system with a modular push-pull PWM converter (MPC), which is intended for grid connection to medium-voltage or high-voltage power systems. The converter is equipped with a center-tapped transformer and two arms consisting of a cascade connection of multiple bidirectional PWM chopper-cells with floating dc capacitors. This paper discusses the operating performance and control method of the MPC, to achieve voltage balancing of all the floating capacitors. Moreover, a comparison is made between the MPC and a modular multilevel converter (MMC) as the battery energy storage system. The validity of the concept and control method developed in this paper is confirmed by computer simulations using the “PSCAD/EMTDC” software package.

Keywords

PWM power convertors; battery storage plants; power capacitors; power generation control; power grids; power system CAD; power transformers; MMC; MPC; PSCAD-EMTDC software package; battery energy storage system; bidirectional PWM chopper-cells; center-tapped transformer; computer simulations; floating capacitors; floating dc capacitors; grid connection; high-voltage power systems; medium-voltage power systems; modular multilevel converter; modular push-pull PWM converter; Batteries; Inductors; Inverters; Pulse width modulation; Switches; Voltage control; Battery energy storage system; multilevel converter; voltage-balancing control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2012 IEEE

Conference_Location

Raleigh, NC

Print_ISBN

978-1-4673-0802-1

Electronic_ISBN

978-1-4673-0801-4

Type

conf

DOI

10.1109/ECCE.2012.6342745

Filename

6342745