THE STUDY AND INVESTIGATION OF POTENTIAL FAILURE MODES, EFFECT AND CRITICALITY IN 4 KVA INVERTER SYSTEMS

Abstract

This research presented the study of potential failures, investigation of reliabilities and the analysis of failure modes, effect and their criticalities associated with a modularized 4 KVA inverter systems. The intent of the inverters’ systems as commonly used alternative source to the mains required it continuously uninterrupted. These requirements have become even more relevant in view of the high sensitivity and sophistication of modern technological equipment presently in use. With this recommendation, the inverters’ reliability and failure modes become paramount to be investigated and studied. The research depicts that the more the components connected to a section or unit of an inverter system, the higher the tendency of failure in such section and vice-versa. Also, the disparity between availability and reliability was also investigated and it was found that availability is a function of time while reliability is a function of the circuit components and not of time. On the final note, we believe the results and findings discussed in this research would provide guide to the designer of inverter system engineers in making informed choices on the likely failure modes, their criticality, probability of occurrence, severity and the risk preference number associated with all the possible failure modes.

 

KEYWORDS: Criticality, Inverter System, Reliability, Failure modes, and FMECA