High Step-Up Voltage Gain Boost Chopper-Fed DC-DC Converter for Medium Voltage Applications

PV systems have generally low voltage levels, although there are significant limits. The major goal is to increase the voltage gain while maintaining high system efficiency. The system currently has some faults, such as input current not being continuous, significant current ripple, and leakage currents. There is the possibility of boost the voltage gain while using a transformer, but it occupies space, is expensive, and has to be considered every time the transformation ratio, these drawbacks are avoided by utilizing a Z-source DC-DC converter. This paper proposes a High step-up voltage gain boost chopper-fed DC-DC converter for medium voltage applications. The proposed converter helps to improve system voltage gain while reducing voltage stress on capacitor switches and current ripple. The proposed converter topology is examined by comparing with other converter configurations, the proposed topology shows robust performance and better results in terms of high voltage gain, low voltage stress on the energy storage elements, and less harmonic content in the output voltage. Simulation results are verified and compared with other existing configurations.