Abstract
One of the unique advantages of SOFCs is the intrinsically high efficiency of producing electrical power. Depending on the power rating and stack configuration, the net AC electrical efficiency of an SOFC generator ranging from a few to hundreds of kilowatts varies from 35 to 55%. When combined with the waste-heat recovery cycle, the overall energy conversion efficiency of an SOFC system falls into the range of 80–90%. The high electrical and system efficiencies of SOFCs are believed to be one of the major drivers for the enduring interest in SOFC development in the last few decades. In this chapter, the DC electrical efficiency and factors that effect it are extensively discussed. The overall electrical efficiency is not the topic of this chapter; it is simply a multiplication of the DC electrical efficiency with the conversion efficiencies of the individual power conditioning system (PCS) components.
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