Control technique of MPPT utilizing for boost converter applied to small renewable energy system and a DC microgrid for remote area

Abstract

The growing concerns about the environment, depletion of fossil fuels, and increasing energy consumption have led to a rise in the adoption of renewable energy sources. However, integrating these green energy sources into the existing power system requires infrastructure modifications. One popular approach is the establishment of off-grid operations through the use of microgrids. Microgrids are small-scale power systems that can operate both connected to and disconnected from the main power grid. This study focuses on a DC microgrid that utilizes a renewable energy system to power DC loads in case of a conventional grid failure. The system incorporates various components such as a universal diode rectifier, a boost converter, a small wind turbine (SWT) connected to a permanent magnet synchronous generator, and the Incremental Conductance (IC) algorithm. These components are employed to maximize the output power of the boost converter and maintain precise control over the output voltage, ensuring reliability. To efficiently operate the switching element and achieve a fast Maximum Power Point Tracking (MPPT) technique and voltage regulation despite varying wind speeds, a modified IC MPPT control method is utilized. A MATLAB/Simulink model representing an SWT system for a DC microgrid is developed to assess the dependability of the proposed system under changing wind speeds.