Coordinated Control of the Integrated SOFC-GT Generation System for Microgrid Applications

Abstract

In this letter, a novel coordinated control is proposed to achieve integrated power generation of solid oxide fuel cell-gas turbine (SOFC-GT) systems. The integrated system is equipped with both grid following (GFL) and grid forming (GFM) capabilities, which represent an extended controllability compared with the conventional SOFC/GT that operates independently. Further, an adaptive power allocation strategy is developed to regulate the Hydrogen-Electricity conversion that couples the operation of SOFC and GT, which ensures the system's safe and efficient operation under various scenarios. Detailed control algorithms and validations are provided.