Two-phase buck converter for battery charger of small scale wind turbine power system

In this study, we investigate the two-phase buck converter which is used to charge the battery in small scale wind turbine power system. The proposed converter consists of two pieces of a single buck converter that each output is connected in parallel. The benefit of proposed converter offers better output power that can reach two times of a single converter. Therefore, it can increase the charging speed at the time of maximum generated by the wind turbine. The proposed converter is carefully calculated and verified by the experiment of 200 Watt wind turbine. The results show that the proposed converter power output becomes twice of the single buck converter at under 4 A output current operation. And the amplification slows down when the output current reaches 12 A.