This paper presents a methodology based on the failure mode and effect analysis (FMEA)\nto analyze the failures in the power stage of wind-fuel cell hybrid energy systems. Besides, fault tree\nanalysis (FTA) is applied to describe the probabilistic failures in the vital subcomponents. Finally,\nthe reliability assessment of the system is carried out for a five-year operation that is guaranteed by\nthe manufacturer. So, as the result, the reliability analysis proves that the metal oxide semiconductor\nfield effect transistor (MOSFET) and electrolytic capacitor are the most critical components that\nintroduce damages in the power circuit. Moreover, a comparative study on the reliability\nassessment by the exponential distribution and the Weibull distribution show that the B1 lifetime\nobtained by the Weibull distribution is closer to reality.
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