Active-Power Control of Individual Converter Cells for a Battery Energy Storage System Based on a Multilevel Cascade PWM Converter

Author

Maharjan, Laxman ; Yamagishi, Tsukasa ; Akagi, Hirofumi

Author_Institution

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

Volume

27

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

1099

Lastpage

1107

Abstract

The battery energy storage system is an essential enabling device of the smart grid, because it helps grid connection of massive renewable energy resources. This paper has a brief discussion on a battery energy storage system based on a multilevel cascade pulsewidth-modulated (PWM) converter for its practical use. The active-power control of individual converter cells is presented to make it possible to charge and discharge the battery units at different power levels while producing a three-phase balanced line-to-line voltage. This results in the maximum utilization of battery energy even when the power-handling capabilities of the battery units differ. Experimental results obtained from a 200-V, 10-kW, 3.6-kWh battery energy storage system verify the effectiveness of the presented active-power control.

Keywords

PWM power convertors; battery management systems; battery storage plants; power control; power system interconnection; renewable energy sources; smart power grids; PWM converter; active power control; battery energy storage system; converter cells; multilevel cascade converter; power 10 kW; pulsewidth modulation; renewable energy resources; smart grid; Batteries; Control systems; Energy storage; Pulse width modulation; Pulse width modulation converters; Renewable energy resources; Smart grids; Solar energy; Voltage control; Wind energy; Active-power control; battery energy storage systems; multilevel cascade converters; neutral shift;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2010.2059045

Filename

5512647