A study on the control of buck-boost converter using newton-method MPPT

The purpose of this study is to perform research about newton-method control using buck-boost converter that is applied to photovoltaic system considering soft switching method. Because the photovoltaic cell's output is changed by insolation and temperature, it requires MPPT operating at maximum power point in photovoltaic application field. Thus DC-DC converter should be used to make photovoltaic cell's output work at maximum power point. In addition, in order to optimize the efficiency of the system was used soft switching buck-boost converter. For buck-boost converter loss reduction and efficiency optimization, Soft-switching converter have adopted the ZCS and ZVS method. In order to verify the feasibility of the proposed method, simulation was performed in line with Matlab-Simulink and Sim coupler and the results are proven.