New Control Algorithms for Microgrids Based on Microturbines

Abstract

This paper analyses the performance of a low voltage microgrid, based on microturbines, and presents new control algorithms to improve the efficiency and reliability of microgrids. Due to the importance of islanding and focusing on the efficiency and the harness of the heat of the exhaust gasses in islanded operation mode, a new control algorithm has been developed. Additionally, a new control strategy is presented for the seamless transition between islanded and grid connected operation modes based on changing the control algorithms of the microturbines. synchronization, have been studied in [1]-[2]. Moreover, automatic fault detection in the utility network for the necessary transition between connected and islanded mode has been studied in [3]. However, it is still necessary to develop control strategies applied to generation systems to automatically transition between both modes with reduced voltage and current transients. The new proposed control algorithms are tested by simulation using a low voltage network fed by 5 microturbines. Lasseter model is used to represent the dynamic behaviour of the microturbines. The paper shows the simulation results and the main conclusions of the validation process. The new proposed control algorithms are tested by simulation using a low voltage network fed by 5 microturbines. Lasseter model is used to represent the dynamic behaviour of the microturbines. The paper shows the simulation results and the main conclusions of the validation process.