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Alishah, Rasoul Shalchi,Nazarpour, Daryoosh,Hosseini, Seyed Hossein,Sabahi, Mehran Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.3
In this paper, a novel topology for cascade multilevel converter is introduced, which has many levels with fewer number of power electronic components. Less number of the switches leads to the reduction of size, losses, simple control strategy and high efficiency. For proposed multilevel converter, a new algorithm for determination of dc voltage source values has been recommended. The performance and operation of the proposed multilevel converter has been evaluated with the simulation results of a cascade 25-level converter.
Design of a New Extended Zeta Converter with High Voltage Gain for Photovoltaic Applications
Seyed Hossein Hosseini,Rasoul Shalchi Alishah,Naser Vosoughi Kurdkandi 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
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.