Modular d-q frame small-signal modelling and analysis of a microgrid

In this paper, a systematic, scalable small-signal modelling approach for microgrids is described. First, each subsystem is modelled separately, and then all are interfaced using Simulink Control Design Toolbox. The main advantage of this method is its practicality, as analytical models of whole microgrids are derived systematically and easily. A real microgrid is modelled and the presented method is applied to perform analysis both at subsystem-level (control design) and at system-level (microgrid stability). Also, experimental operation of the microgrid is illustrated.