Modeling and simulation of microturbine and renewable energy resources for distributed generation system

This paper presents the modeling, analysis, and simulation results of a hybrid generation system in a stand-alone power supply system. The system includes a microturbine (MT) and inverter-based renewable energy resources. A dynamic model and control system for the MT generator (MTG) and inverter-based renewable energy resources are developed to investigate the load-following performance under different operating conditions. The MTG model also incorporates a speed controller for maintaining constant speed under variable loads. Moreover, a sliding mode control (SMC) system is designed for current control of the inverter to achieve a sinusoidal output current under various output loads. A theoretical analysis and simulation are carried out to demonstrate the validity and effectiveness of the proposed control method. The simulation results show that the proposed hybrid power generation system feeding stand-alone loads can be operated efficiently under varying load power demand.