Control to Smes Using a Two Level Converter (2lc) and Neutral Point Clamped (Npc).

This paper presents a methodology for charging/discharging control of a Superconducting Magnetic Energy Storage (SMES) systems, using a two stages DC/AC conversion namely, A DC/DC stage for the SMES control and a DC/AC stage for grid integration. A comparison between two different typologies of DC/AC converters is also presented. The first topology is a Two Level Converter (2LC) and the second topology is a Neutral Point Clamped (NPC) converter. As main result, the 2LC provides better response that the NPC, because the first topology request less energy in the SMES than the second topology. Finally, the 2LC performance is better with low energy stored than the NPC.