Enhanced Re Boost-Luo with coupled inductors for efficient integration of PV systems in DC microgrids

A pioneering method to elevate the performance of a DC microgrid is presented in this study. It involves the smooth integration of photovoltaic system into the microgrid using an improved Re Boost-Luo converter with coupled inductors. In this configuration, the step-up isolation transformer in conventional Re Boost-Luo converter is replaced with coupled inductors, streamlining power conversion and reducing size. The enhanced Re Boost-Luo converter is controlled using a cascaded recurrent neural network-based maximum power point tracking control system for ensuring optimal power extraction from PV. The microgrid is strengthened further with a battery, seamlessly integrated via an isolated bidirectional DC–DC converter for effective energy storage and management. To diversify the load and demonstrate practicality, an electric vehicle charger is connected to the DC bus. Comprehensive evaluation of this system’s effectiveness is conducted through extensive Matlab simulations and real-world laboratory prototype implementation. Critical to the success of this innovation is the achieved efficiency of 97.5%, surpassing conventional counterparts. This research significantly contributes to the advancement of DC microgrid technology, enhancing its efficiency and versatility, and providing a sustainable and efficient energy solution for various applications.