I. Introduction
It is always challenging to study the dynamic behaviour of complex power systems in a laboratory. The micro-alternator is a three-phase synchronous generator which possesses the same electrical constants (in per unit on machine rating) as those generally found in alternators in modern power stations. It is an electrical scaled-down model of machines up to 1000 MW rating and is rated between 1 to 10 kVA [1], [2]. Early experimental platforms used micro-alternators to emulate the behaviour of steam, and hydro turbine generators [2]. In [3], a5kW micro-machine (doubly fed induction machine) capable of mimicking a 2.5 MW wind turbine is developed. This kind of experimental test-beds using micro-machines are necessary to study the interactions of fast power converter controls in renewable sources and fast excitation systems of conventional generators. However, it is very crucial to enable the micro-machines with standards-based realistic control structures for studying these interactions [2].