Design and Implementation of 2kw Grid Connected Inverter

This article delves into the design and optimization of a 2 kW grid-connected microinverter, with a primary focus on enhancing efficiency and reliability through innovative control system strategies. We emphasize key aspects such as Maximum Power Point Tracking (MPPT), Phase-Locked Loop (PLL) synchronization, and the management of active and reactive power. traditional analog components and circuits for functions such as PLL and filtering were implemented in this project through software and coding. Due to the reduced usage of components and circuits the device exhibits better performance and lower sensitivity to noise compared to similar devices. The study integrates Proportional-Integral (PI) control methods with advanced power management strategies to address challenges in phase and amplitude adjustment and maintaining grid stability. A prototype was developed to validate the proposed design and control strategies, featuring distinct sections for DC-DC and DC-AC conversion with the HERIC topology. Experimental results confirm the system's effectiveness in power transfer and demonstrate the successful implementation of the control system. This research contributes to improving microinverter technology, providing a scalable solution for integrating photovoltaic systems with the electrical grid.