New control scheme of lithium-polymer battery units using single phase multi-level converter

This paper proposes a new control scheme of lithium polymer battery units, based on single phase multi-level converter. In the DC/AC converter applications using battery storage system, it is necessary to control the balancing voltage of individual battery units for high efficiency utilization Using the proposed control scheme, it is applied the DC/AC single phase converter system. To verify the effectiveness of the proposed control scheme, computer simulation and experimental work are accomplished. In the computer simulation, lithium-polymer battery units and single phase multi-level converter system are modeled and carried out using Psim simulation program. And also computer simulation and experimental results will be presented to support the discussions.