Development of a 250kW power conditioning system for molten carbonate fuel cell power generation system

This paper presents the design, development and performance of a power conditioning system (PCS) for application to a 250 kW molten carbonate fuel cell (MCFC) generation system. A DSP controller was used to control the DC-DC and DC-AC converter operation for grid connection and power injection to the grid. The controller must also supervise the total PCS operation while communicating with the fuel cell system controller. A control method for parallel operation of DC-DC converters was proposed and verified. A 250 kW prototype was successfully built and tested. Experimental performances are compared to minimum target requirements of the PCS for MCFC.