Solid oxide fuel cell based grid connected operation

Abstract

As energy consumption rises, one must find suitable alternative means of generation to supplement conventional existing generation facilities. In this regard, distributed generation will continue to play a critical role in the energy supply demand. The common technologies available as DG are micro-turbines, solar, photovoltaic systems, fuel cells stack and wind energy systems. A dynamic model of solid oxide fuel cell is done. Fuel cells operate at low voltages and hence fuel cells need to be boosted and inverted in order to connect into the utility grid. A DC-DC converter and a DC-AC inverter were used for interfacing SOFC with the grid. The output voltage and current waveforms of the DC-AC inverter, load and grid are analyzed for various load for grid connected applications.