A Study on the Health Assessment of Sub-Modules in MVDC Converters

This paper presents a study on the health assessment of Sub-Modules, which are critical components of MVDC power conversion systems. The focus is on identifying failure modes and their effects through Failure Modes and Effects Analysis (FMEA), specifically targeting key components such as IGBTs and capacitors. Evaluation criteria are proposed to classify the health condition into five levels based on diagnostic methods. This research aims to lay the groundwork for developing an asset management system that can be applied to the entire DC transmission and distribution system in the future.