Investigation of the capability of a solid oxide fuel cell power plant supplying a motor load

This paper investigates the capability of a solid oxide fuel cell(SOFC) power plant serving a motor load. The SOFC power plant is integrated to the AC system through Power Conditioning Units (PCUs)- PWM based inverters. The primary task for PCU control is load following or P, Q tracking. This can be achieved by transforming P, Q command to reference currents and controlling current through inverter Pulse Width Modulation (PWM) index and angle. When a motor load is served by a fuel cell plant, its stalling process can be prevented by inverter control through reactive power command adjustment. This paper demonstrates a motor stalling process and the capability of fuel cell inverter control on stalling preventing. Time domain simulations are performed by Matlab/Simulink.