Improved DC-DC converter based on quadruple boosting technique for high-voltage gain in photovoltaic systems

In this paper, a non-isolated DC-DC converter for verifying ultra-high-voltage gain is presented, utilizing a modified quadruple boost converter (MQBC) to achieve remarkable voltage gain in photovoltaic systems. The objective is to achieve exceptionally high-voltage gain, accomplished by integrating a modified dual boost converter (MDBC) interleaved with the main and auxiliary MOSFETs, effectively doubling the voltage gain. Furthermore, the (MDBT) a modified dual boosting technique is combined with the auxiliary MOSFET to double the voltage gain while concurrently mitigating voltage stress on the auxiliary MOSFET and diodes in the MDBT. Additionally, the diode in the MQBC operates under zero current switching (ZCS). In addition, at low duty ratio, the proposed converter (PC) input current does not pulsate, which makes the PC more suitable for renewable energy systems (RES). The converter provides manifold advantages, showcasing high efficiency and ensuring minimal voltage stress on power devices with low current stress on the power switches. Moreover, PCB design and experimental tests are employed to validate the converter against simulation and laboratory findings. Notably, this converter aims to elevate input voltages from 30 to 40 V to a variable output range of 310 V to 500 V, delivering 375 watts at 96% efficiency.