A voltage equalizer ensures uniform voltage distribution in a series-connected battery or ultra-capacitor stack to improve its capacity and life significantly.
The proposed equalizer achieves fast equalization without requiring complex current control, and lends itself to simple hardware and control implementation, and is scalable due to its modular design. The developed prototype shown in the figure above is tested on Li-ion cells, hybrid ultra-capacitor banks, and the widely used lead-acid batteries. The circuit shows excellent voltage equalization performance.
Faculty Member: Vinod John [EE]