Thermodynamic modelling and real-time control strategies of solar micro gas turbine system with thermochemical energy storage

Distributed solar gas turbine systems with thermal energy storage are expected to overcome the intermittence and instability of irradiance produce reliable flexible electricity for remote districts islands. Here, a mathematical model is developed 10 kW e micro (MGT) system thermochemical (TCES) study thermodynamic characteristics at real-world direct normal irradiation (DNI) variations. Real-time control strategies aiming stable operation set point tracing proposed implemented in transient simulations analyze effect against both short- long-term DNI disturbances based on dynamics. Results show that, by regulating output power, rotational speed (N) kept constant, responses smoothened (e.g., less than 5.8% fluctuation mass flow rate). Power regulation also enables constant outlet temperature (TOT) optimal overall performance power total efficiency exceeding 14 14%, respectively). By combining bypass regulations, N TOT can simultaneously remain while outputting 12.6 ±5% under 750–820 W/m 2 , sharp drop 500 . For favorable weather, N-TOT simultaneous guarantee high performance. If massive clouds appear, more advantageous during peak load demand larger generation, preferable low smoother operation. Furthermore, addition TCES smoothens variation prolongs generation duration. allows store up 32% 18–28 kWh daytime operation, thanks higher operating temperature. Overall, real-time methods reduce dependency fossil fuel combustion contribute stable, safe, efficient distributed high-percentage-solar-share MGT system. • Control tactics offered MGT-TCES systems. analyzed disturbances. be controlled regulations. shows better compatibility N.