Title :
State-of-Charge (SOC)-Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter
Author :
Maharjan, Laxman ; Inoue, Shigenori ; Akagi, Hirofumi ; Asakura, Jun
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan
fDate :
6/1/2009 12:00:00 AM
Abstract :
Renewable energy sources such as wind turbine generators and photovoltaics produce fluctuating electric power. The fluctuating power can be compensated by installing an energy storage system in the vicinity of these sources. This paper describes a 6.6-kV battery energy storage system based on a cascade pulsewidth-modulation (PWM) converter with focus on a control method for state-of-charge (SOC) balancing of the battery units. A 200-V, 10-kW, 3.6-kWh (13-MJ) laboratory system combining a cascade PWM converter with nine nickel metal hydride (NiMH) battery units is designed, constructed, and tested to verify the validity and effectiveness of the proposed balancing control.
Keywords :
PWM power convertors; energy storage; nickel; secondary cells; battery energy storage system; cascade PWM converter; nickel metal hydride battery unit; power 10 kW; renewable energy source; state-of-charge balancing control; voltage 200 V; voltage 6.6 kV; Batteries; Control systems; Energy storage; Photovoltaic cells; Power generation; Pulse width modulation; Pulse width modulation converters; Renewable energy resources; Wind energy generation; Wind turbines; Active-power control; battery energy storage system (BESS); cascade converter; nickel metal hydride (NiMH) battery; state-of-charge (SOC) balancing;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2009.2014868
