Abstract

Abstract The article approaches the issue of small and medium sized electric motors. This is part of an extended study, which contains an algorithm for computing all the statistical and reliability indicators used in the design and analysis of electric motors and also the general system which include these types of motors. The general system is composed by a photovoltaic panel for power supplying, the charger and the battery module, the control module and the motor part of the system. The present paper emphasizes the FMEA analysis, considering the usual faults which might occur in the running of the mentioned electric motors. Thus, the influences of constructive elements of a motor on its reliability are computed (mode percentage); the prediction of the number of occurrences of a fault during the maximal running period of a motor, the analysis of risk level for small and medium electric motors and determining critical values for the motor's elements (mode criticality).

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