Title :
Fault-tolerant control for a battery energy storage system based on a cascade PWM converter
Author :
Maharjan, Laxman ; Yamagishi, Tsukasa ; Akagi, Hirofumi ; Asakura, Jun
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
This paper focuses on fault-tolerant control for a battery energy storage system based on a three-phase multilevel cascade PWM (pulse-width-modulation) converter with star configuration. It enables continuous operation and maintains SOC (state-of-charge) balancing of operating battery units even during the occurrence of a converter-cell or battery-unit failure. This enhances both system reliability and availability. A 200-V, 10-kW, 3.6-kWh laboratory system combining a three-phase cascade PWM converter with nine NiMH (Nickel-metal-hydride) battery units is designed, constructed, and tested to verify the validity and effectiveness of the proposed fault-tolerant control.
Keywords :
PWM power convertors; battery storage plants; energy storage; fault tolerance; secondary cells; NiJkH; battery energy storage system; fault-tolerant control; power 10 kW; pulse-width-modulation converter; state-of-charge balancing; system reliability; three-phase multilevel cascade PWM converter; voltage 200 V; Availability; Batteries; Control systems; Energy storage; Fault tolerant systems; Laboratories; Maintenance; Pulse width modulation; Pulse width modulation converters; Reliability;
Conference_Titel :
Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3556-2
Electronic_ISBN :
978-1-4244-3557-9
DOI :
10.1109/IPEMC.2009.5157519
