Design method of cross current suppression control for parallel operation system constructed with two electric power converters

Large-capacity parallel operation systems constructed quickly and inexpensively by combining two or more existing electric power converters have a lot of flexibility. However, it is important to suppress the cross current flows between the converters. This can be done by controlling the system while miniaturizing the combination reactor. In this paper we elucidate the suppression performance of various cross current control methods and provide design guidelines for them.