Maximum Power Point Tracking Algorithm for Photovoltaic Inverter Systems

The Maximum Power Point Tracking (MPPT) algorithm in photovoltaic inverter systems employs the Incremental Conductance method, which is implemented using S-functions and can be loaded and utilized within Simulink. This widely-adopted algorithm significantly enhances the efficiency and performance of photovoltaic inverter systems. Through real-time monitoring and analysis of the photovoltaic array's current and voltage parameters, the algorithm dynamically adjusts the inverter's operating state to ensure the system consistently operates at its maximum power point. The implementation utilizes mathematical comparison between the instantaneous conductance (I/V) and incremental conductance (ΔI/ΔV) to determine the optimal operating voltage. Key algorithm features include excellent response speed and stability, enabling adaptation to varying irradiation conditions in photovoltaic system operations. The S-function implementation allows for seamless integration with Simulink blocks, providing flexibility for system-level simulations and controller design. By employing this algorithm, photovoltaic inverter systems achieve improved energy conversion efficiency, extended system lifespan, and reduced energy losses through optimal power extraction under changing environmental conditions.