Design and Analysis of a High-Gain Step-Up/Down Modular DC–DC Converter with Continuous Input Current and Decreased Voltage Stress on Power Switches and Switched-Capacitors

Due to concerns, such as global warming and depletion of fossil fuels, countries are forced integrate energy storage devices (ESSs) renewable sources (RESs), photovoltaic (PV) systems, wind turbines fuel cells, into their power networks. Here, a new high gain DC–DC converter with step-up/down ability is proposed for modern applications. Since this provides variable voltage gain, it can be employed output regulation purposes in RESs solar panels. Additionally, remarkable reduction stress on the switched capacitors switches. its modular structure obtained by employing switched-capacitors (SCs), possible topology very conversion ratio using low duty-cycles produced simple straightforward control system. To specific, more number SC cells increase, increases. The has continuous input current allowing extract maximum from like PV It should noted that application not limited aforementioned ones since used various applications needing gains generating desired level direct (HVDC) systems especially transmission lines. For validating performance structure, comprehensive comparisons experimental results presented.