Development of a high-gain step-up DC/DC power converter with magnetic coupling for low-voltage renewable energy

Abstract

There exists an extensive range of applications for elevated gain DC/DC converters, as numerous low-voltage resources are exploited for power supply. Therefore, this study introduces a groundbreaking magnetically coupled DC/DC converter specifically designed for resources with low voltage, including micro PV or fuel cell systems. By enduring low current and voltage stresses, the power devices in this converter ensure remarkable efficiency while maintaining proven voltage ratio capability. The operational principles of the converter are thoroughly discussed and supported by the implementation of a 200W-400V prototype. In order to confirm the effectiveness of the converter, a range of experimental tests were carried out in different scenarios, confirming its dependable functionality. This novel converter opens up new possibilities for harnessing the potential of low-voltage resources, offering an efficient and reliable solution for power conversion. The research yields a substantial advancement in renewable energy systems, showcasing the practicality and efficiency of the proposed converter in real-life scenarios, with the suggested converter achieving a remarkable 94.3% maximum efficiency during voltage transfer. The MATLAB software serves as the principal tool for conducting primary simulations and formulating the design equations for the circuit.