Analysis of reliability and preventive maintenance of wireless electrical vehicles charging station

Abstract

The reliability analysis and the estimate of preventive maintenance indicators appear a key factor for the devices used in automotive industry. The increasingly successful entry of electronic systems into that sector, in particular in electric vehicles, requires the exploration of reliability analysis methods and tools, as well as the proposal of solutions and recommendations for improving reliability. The present paper considers a complex reliability analysis of wireless electrical vehicles charging station, starting by determining the elements and blocks of lowest reliability in the charging station and pointing out their significance and effect on the overall reliability of the charging station. The next stage is to define the probability states by means of which we determine the state the charging station will be in-operability, failure, protection, maintenance or repair. This analysis allows us to define parameters such as availability, total down time and number of expected failures. The last step is to determine the maintenance time and the interval reliability after carrying out maintenance for a given period of operation. By using this complex analysis, we could identify the weak units in the systems, define how long before maintenance and repair can be done, and give recommendations for improving their reliability.