Synchronization and Optimal Operation of a 140 kVA Inverter in On-Grid Mode Using Mamdani Controllers in Cascade

This paper addresses the synchronization and operation of a 140 kVA inverter system connected to main grid as part decentralized microgeneration system. The considerations for supply electrical energy stored in battery banks, mostly photovoltaic origin, involve study details rigid nonlinear system, which parallels generation distribution standards typical hydroelectric thermoelectric plants. Considering aspects related power electronics operation, this presents both modeling controlling necessary synchronize ensure stable systems when grid. Statistical processing was developed guarantee between without presenting electric shocks by simulating magnetic link asynchronous generators meet aim. proposed model simulates increase phase shift maintaining constant frequency based on Chirp wave generator. process considers baseband operation. A Mamdani-type fuzzy proportional-integral controller is used determine setpoint, sets generator includes Mamdani proportional-type controller. Both controllers are cascade. applied correlational technique achieve synthesis sinusoid presented optimal performance using 17 samples per signal period. design transformer primarily, guaranteed −4.3018°, allowed THD below 2.75%.