Title :
Discussions on a battery energy storage system based on a cascade PWM converter with star configuration
Author :
Maharjan, Laxman ; Yamagishi, Tsukasa ; Akagi, Hirofumi
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
This paper makes discussions on a battery energy storage system based on a multilevel cascade pulsewidth-modulated (PWM) converter for its practical use. Briefly discussed are several considerations including state-of-charge (SOC) balancing of multiple battery units, and fault tolerance of the system. An active-power control of individual converter cells is presented to make the multiple battery units charged or discharged at different power levels, producing a three-phase balanced line-to-line voltage. Experimental results obtained from a 200-V, 10-kW, 3.6-kWh battery energy storage system verify its effectiveness.
Keywords :
PWM power convertors; battery storage plants; fault tolerance; power control; active-power control; battery energy storage system; cascade PWM converter cell; fault tolerance; multilevel cascade pulsewidth-modulated converter; multiple battery units; power 10 kW; state-of-charge balancing; three-phase balanced line-to-line voltage; voltage 200 V; Availability; Batteries; Energy storage; Fault tolerance; Fault tolerant systems; Medium voltage; Motor drives; Pulse width modulation; Pulse width modulation converters; Voltage control;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543507
