Model improvement and experimental verification of microturbine generation system

The microturbine generation system, which was composed of microturbine, high speed permanent magnet synchronous generator, converter, inverter, controller and filter, was modeled and simulated. The simulation model was improved both in steady operating points and transient process with the experimental data of a practical microturbine generation system. The microturbine input of variables nonlinear combination enhanced the microturbine output accuracy in steady state. The relevant parameters were calculated through data fitting based on the input-output relationship. The rate limiter, which reflected the delay characteristic of thermodynamic process, was applied in the power commands of the microturbine and inverter to improve the dynamic fit. Finally, the comparison between experimental data and simulation results verified the applicability and effectiveness of the model proposed in this paper.