A Non-isolated Ultra High-Step-Up DC-DC converter with Low Semiconductors’ Voltage and Current Stresses Suitable for High-Voltage Applications

Boost converter, as the simplest non-isolated DC-DC converter, can not provide high voltage gains. This paper proposes a non-isolated DC-DC converter with a high voltage gain. As with the boost topology, this converter provides continuity of the input current besides employing one switch with a simple drive circuit. Besides the high voltage gain, the applied voltage stresses are less than the output voltage. Notably, the highest voltage stress of the semiconductors is half of the output voltage. This converter is studied in both the ideal and non-ideal modes. Moreover, it is compared with the recently suggested converters. Finally, the experimental results are discussed. Notably, the proposed topology converts 40 V at the input source to 2500 V at the output with a 50 % switch duty cycle. The mentioned values define the proposed topology as one that can be used in power electronic base high-voltage components.