Single-phase Synchronizer–Asynchronous Converter on Microgrid with Fuzzy–Active Disturbance Rejection Control

Abstract

This invention concerns the stability of a microgrid system that operates independently with solar panels for residential, industrial, and remote area electricity sources, more specifically, this invention relates to power generation using renewable energy in the form of solar energy, with power and frequency control on the AC bus using a Fuzzy-Active Disturbance Rejection Control (Fuzzy-ADRC) controller. When the solar radiation intensity is high, the solar panels will produce maximum power. When the solar panels experience interference and do not output power, the CB DC circuit breaker will be disconnected. When all solar panels are disconnected or when the weather is rainy, the automatic switch controller will disconnect all CB DC circuit breakers on the solar panels. At the same time, the battery will supply power through a buck-boost converter, and is connected to the DC Rail.When solar panel and battery power changes, the hybrid inverter operates in synchronizer mode to stabilize the frequency and output power. When large load surges occur, the hybrid inverter operates in asynchronous mode to quickly supply power to the AC load.