MMC Stored Energy Participation to the DC Bus Voltage Control in an HVDC Link

Shabab Samimi (1) , François Gruson (1) , Philippe Delarue (1) , Frédéric Colas (1) , Mohamed Moez Belhaouane (1) , Xavier Guillaud (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697

The modular multilevel converter (MMC) is becoming a promising converter technology for HVDC transmission systems. Contrary to the conventional two- or three-level VSC-HVDC links, no capacitors are connected directly on the dc bus in an MMC-HVDC link. Therefore, in such an HVDC link, the dc bus voltage may be much more volatile than in a conventional VSC-HVDC link. In this paper, a connection between the dc bus voltage level and the stored energy inside the MMC is proposed in order to greatly improve the dynamic behavior in case of transients. EMT simulation results illustrate this interesting property on an HVDC link study case.

Mots clés: HVDC Transmission; Capacitors; Voltage control; Energy storage; Power conversion; Current control

Domaines: Energie électrique

Shabab Samimi, François Gruson, Philippe Delarue, Frédéric Colas, Mohamed Moez Belhaouane, et al.. MMC Stored Energy Participation to the DC Bus Voltage Control in an HVDC Link. IEEE Transactions on Power Delivery, 2016, 31 (4), pp.1710-1718. ⟨10.1109/TPWRD.2016.2540926⟩. ⟨hal-01760369⟩