Continuous Sliding Mode Control of Lithium-ion Battery Charger

In this paper, a continuous sliding mode control (CSMC) approach based on a super-twisting algorithm is proposed to improve the efficiency and safety of the lithium-ion battery charger. First, the charger model is established based on the Vienna rectifier and the three-phase interleaved buck converter. Differing from the traditional PI control, a composite control scheme by using the super-twisting algorithm is proposed for the three parts of the system. The sliding surface, the corresponding continuous control law, and the steady analysis are carried out to guarantee the effectiveness of the designed controller. Simulations validate this paper.