ABSTRACT
This chapter introduces several typical designs of hybrid renewable energy systems. In the design, DC–AC converters are used for the wind energy, solar energy, fuel cell stack because this hybrid renewable energy system is used in utility power systems. Several main issues, including system configuration design, control methods, and power conditioning system design, need to be considered. The newer generation of power and control electronics used in the conversion of wind to electricity includes the insulated gate bipolar transistor (IGBT) and the digital signal processor (DSP). The latest IGBTs have both faster switching times and higher power ratings than previous generations, and the modern DSPs have more computing power and higher speeds than previous digital controllers. The controllers used for the generator portion of the combined wind–fuel cell system model in are discrete-time proportional–integral–derivative controllers derived by the backward difference method.
