A review of series voltage source converter with fault current limiting function

The series voltage source converter(SVSC) is widely used in the power electronic equipment, such as series active power filter, dynamic voltage restorer, unified power flow controller and so on. However, while the SVSC is more vulnerable to the impact of fault current, its applications are increasing, bringing huge challenges to the safe operation of the grid. In recent years, the topology and control strategy of the series voltage source converter with fault current limiting(SVSC-FCL) are a research hotspot. In this paper, it suggests classifying SVSC-FCL based SVSC into two groups: the control scheme optimization group and the existing topology improvement group. The research challenges and perspectives of the SVSC-FCL are introduced in detail. This paper aims to illustrate current research progress on SVSC-FCL and enrich the available pool of the multi-functional power electronic equipment.