Emulation of Synchronous Machine for Frequency Stability Improvement in Microgrids

FRACK P. F., MOLINA M. G., MERCADO P. E.; DE DONCKER R.W.

Sydney

Congreso; The 11th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2015); 2015

School of Electrical & Electronic Engineering of Singapore Polytechnic

Micro-grids (MG) are expected to be low inertia grids especially due to the deployment of power electronics used to connect distributed generation (DG) units. This issue brings consequences on the grid dynamics, reducing the frequency stability margins. To this end, the emulation of synchronous machines has been proposed as a possible alternative. This paper explores the benefits of this concept comparing the dynamic performance with respect to the conventional droop control.