Analysis and Design of Efficient High Voltage Gain Interleaved Boost Converter for Solar PV System

Abstract

To optimize the power output of the PV array, it is recommended to employ a high-gain interleaved dc-dc boost converter in the PV energy conversion system. The proposed converter builds upon the existing two-phase interleaved dc-dc boost converter, which is commonly used in utility grid integration circuits or high-power applications due to its ability to minimize ripple current from the PV. The primary objective of this research project is to elevate the output voltage of the currently installed PV array in order to cater to high-power applications or grid integration. The key requirements include achieving high-efficiency power conversion and fully utilizing the potential of the PV system. While previous methods have been proposed to increase the solar source's output voltage, they suffer from drawbacks such as low efficiency, complexity, and cost. In contrast, the suggested dc-dc converter boasts a remarkable efficiency of 96% and is capable of converting voltage from 25V to 400V for a power output of 400W. The performance of the proposed converter topology has been validated through MATLAB simulation.