POWER CONVERTER SIMULATION MODULE CONNECTED TO THE EMTP

Presently the EMTP models converter valves as ideal switches in parallel with dampers designed to damp numerical oscillations introduced by the commutations. The converter network is modelled through branches with the appropriate TACS control circuits. It is assembled as any other EMTP network, without explicit topology recognition. A more efficient method, both in terms of solution and initialization, is based on a separately programmed module dedicated to power converter simulation and exploiting analytical knowledge. This paper presents the solution method used in such a module and its interface with the EMTP.