Fault diagnosis in unidirectional non-isolated DC-DC converters

Non-isolated DC-DC converters are the most simple and common power converter topologies and their reliability is of primary importance in many safety critical applications. Therefore, a new fault diagnostic method is presented in this paper for unidirectional non-isolated DC-DC converters using only the converters control variables without requiring extrasensors and with only a minimum computational effort. A laboratory setup of a wind-batteries power system has been used to validate the fault diagnostic method.