Design and Surface Flashover Test of 10 kV SiC Power Module for DC Shipboard Application

作者：Xiaoling Li, Yang Liu, Skyler Schwartz, Ning Guo, Ebrahim Karimi, H. Alan Mantooth, Lukas Graber, Robert Cuzner · 年份：2023 · DOI：10.1109/ecce53617.2023.10362040 · 被引用次数：3 · 研究领域：HVDC Systems and Fault Protection、Silicon Carbide Semiconductor Technologies、High voltage insulation and dielectric phenomena

Future all-electric ships will likely use a Medium Voltage DC (MVDC) power distribution system, which has several advantages over MVAC, such as higher power density and higher reliability. As key components for power distribution systems, 10 kV power modules need to meet the insulation requirements for various fault conditions. Grounding faults can cause extremely high electric stress between the module terminals and baseplate hence resulting in surface flashover breakdown. This paper aimed at the insulation challenges of 10 kV power module for the MVDC shipboard application. The maximum voltage stresses of four typical grounding schemes are compared at single line-to-ground faults. The surface flashover tolerance of a 10 kV SiC power module is verified under steady DC voltage and the worst-case transient fault overvoltage. The experimental results can provide a reference for the MV power module insulation design and the module baseplate grounding schemes.