In this paper, a couple inductor‐based dc‐dc boost converter with extensible capability is presented. In the proposed converter, attaching extensions to input section alleviates input current ripple. Furthermore, the current sharing performance between different phases operates beneficially by expanding optimized boost converters, especially when a partial inequality exists among different switches' duty cycles and leakage inductances. The voltage conversion ratio of the proposed converter is also additionally optimized by a series of VMR's output capacitors. Meanwhile, not only the voltage stress upon the main switches is decreased but also the all switches are managed to be turned on with zero current switching technique. The voltage spikes across MOSFETs are eliminated by using the recycling energy of leakage inductances on the clamp capacitor. The topology of the proposed converter, steady‐state analysis, and design procedure is presented to indicate the merits of the suggested converter. A prototype circuit with a three‐phase interleaved boost converter, two number of diode‐capacitor in each VMR, and output power 660 W and 40–800 V conversion ratio is experimented to corroborate the validity of the presented structure.
In photovoltaic applications, a DC-DC converter is required to increase the output voltage of the photovoltaic system. In this paper, a new extended SEPIC converter with the capability of high voltage gain for photovoltaic applications is introduced. The proposed topology includes an extended switched-capacitor converter along with one SEPIC converter. The extended switched-capacitor converter operates with a constant conversion gain while the SEPIC converter is controlled by the Duty Cycle to extract maximum power from PV panel. Reduction of the number of power switches and capacitors are the most advantages of the proposed topology. Also, the input current of proposed topology is continuous which is suitable for PV applications. Finally, the performance of the proposed converter is verified by simulating in the PSCAD/EMTDC simulation software.
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