Review of primary control strategies for islanded microgrids with power-electronic interfaces

To cope with the increasing share of distributed generation (DG) units in the distribution network, a coordinated integration is required. An aggregation of DG units, loads and storage elements into microgrids with proper control strategies can provide this coordination. As most DG units are power-electronically interfaced to the grid, specific control strategies have been developed for the converter interfaces of the DG units in islanded microgrids. This paper provides a survey of these control strategies and shows detailed figures of the control schemes.