a step-up dc-dc converter with high voltage gain suitable for renewable energy sources

Low and variable production voltage of renewable energy sources such as solar cells, fuel cell in terms of dc voltage range is always a big challenge in the field of connecting these sources to the power grid. in order to connect these sources to the inverter and then to the power grid, a dc-dc interface with the ability to convert the input voltage level to 230 or 400 volts is required. this converter should be a step-up dc-dc converter with high voltage gain. so far, many boost structures have been proposed to create a constant voltage due to the variability of the input voltage. in this research, a step-up dc-dc converter with high voltage gain is proposed using a voltage multiplier cell (vmc) and a coupled inductor. main equations of the converter in steady state have been calculated and simulation of the converter has been done to verify the calculations.