Research of Reliability of Power Thyristors Using Methods MIL-HDBK-217F and FIDES

摘要

There are two main types of power thyristors – rectifier and inverter thyristors used in different power converters: in induction heating technologies, in DC motor drives, for power supplies in different technologies such as anodizing, galvanization, etc. For the estimation reliability of thyristors can be used the following parameters – probability of failures, failure rates and mean time to failures (MTTF). There are several guiding methods for calculating one of the main reliability indicators – failure rate of thyristors. The present paper compares the results and applicability of two methods -MIL-HDBK-217F and FIDES, which over the last years have established themselves as basic methods.