Design of a new extended zeta converter with high voltage gain for photovoltaic applications

In this paper, a new extended zeta converter with the potential of high voltage gain for photovoltaic applications is presented. The proposed topology consists of an extended high voltage gain converter along with a Zeta converter. The extended high voltage gain converter is operated with a fixed conversion gain whereas the zeta converter is controlled to do the maximum power point tracking (MPPT) which is an important advantage of proposed structure. The input current of the proposed topology is continuous and its voltage gain is high without using any transformer. Reduction of the number of power electronic switches and costs are other most important benefits of the proposed structure. To show the merits of proposed topology, obtained results are compared with other similar structures. The operation of proposed converter is verified using experimental results.