Efficient Control Strategies for Multiphase Interleaved Boost Converter in Photovoltaic Systems: A Modeling and Simulation Approach

Abstract

The main goal of this project is to create a Multiphase Interleaved boost converter with a solar module using the Maximum Power Point Tracking (MPPT) technique. Thus, the PV module is first examined in MATLAB with SIMULINK software. Just one diode here, a photovoltaic model is applied. The two environmental factors that have the biggest impact on PV cell properties are temperature and solar radiation. A three-phase interleaved boost converter is typically formed by using three boost converters in tandem. The three maximum power point trackers are the source of the controlling pulses. The multiphase interleaved boost converter (MPPT) provides the greatest power that can be obtained from the photovoltaic module and supplies it to the load by increasing the voltage in a high ratio to the desired magnitude. Next, using a universal inverter, the created dc output voltage is returned to the grid. The device needs to be correctly synced before connecting to the grid. This project also presents the design and simulation of a closed loop, three-phase inverter using the MATLAB SIMULINK platform. That is included in PV grid-connected systems as well. The synchronous d-q reference frame governs the inverter used in this instance. To synchronize both, it introduces a current into the grid. Here, the grid frequency and phase are locked with the inverter ones using the phase lock loop technique. At the inverter output terminal, a filter specifically intended to remove high frequency ripple is present. The kind is low pass. The researchers have provided numerous MPPT approaches. The most popular ones are the INC approach and the P&O method. Because the P&O algorithm has advantages over the INC technique, it is used here. Compared to the hill climbing algorithm, the P&O MPPT algorithm has a faster dynamic response and a well-regulated PV output voltage. Due to the INC algorithm's more intricate working method and somewhat longer simulation time than the other two algorithms. This approach effectively minimizes both ripple and total harmonic distortions without compromising the converter's performance and efficiency. An auxiliary circuit supports the main switches under two conditions, decreasing overall losses and enhancing efficiency and power factor, especially for sizable loads. The converter's operational principle, theoretical analysis, and design methodology are outlined. The entire system will undergo testing using MATLAB/SIMULINK, and the simulation outcomes will be provided.