Methods for the verification of protective measures for safety of DC charging stations for electric vehicles

Abstract

Due to the rising number of electric vehicles in operation the handling of charging stations concerning testing and personal safety has been becoming more and more a focus of interest in practice. Currently there are still open questions concerning safe installation, inspection and operation of such charging stations. This paper focuses on protective measures for safety and initial as well as periodic testing of DC charging stations. At the beginning of the work an overview of legal regulations and technical standards for charging stations is compiled. Further on different DC charging processes (of charging stations from different manufacturers in normal operation and in cases of faults) are measured as well as analysed. It shows that DC charging stations of different manufacturers react differently with regard to switch-off behaviour or switch-off times to various fault scenarios.