Adaptive droop for primary control in MTDC networks with energy storage
Location: Lille, France
Publication date: 2013-09-02
Published in: European Conference on Power Electronics and Applications 2013, Lille (France) - EPE 2013
ref. DOI: 10.1109/EPE.2013.6631976

Local members

Alvaro Luna

PhD. Senior Researcher.

Joan Rocabert

PhD. Senior Researcher

Jose Ignacio Candela

PhD. Senior Researcher. Project Responsible



Multi-terminal DC (MTDC) systems are drawing a lot of interest lately in applications related to distributed generation, especially in those that integrate wind or PV systems together with energy storage. This paper proposes an improved strategy for the primary control of MTDC integrating energy storage (ES) units. The concept is based on the combination of a droop control method and dc-bus signaling in order to provide a generic approach to be used as basis for a hierarchical control structure in a multi-point DC-bus system. The proposed method considers the State of Charge (SoC) of the energy storage system at the primary control level, yielding a surface characteristic for a droop control that depends both on the SoC and the dc bus voltage. Finally, a method for designing and tuning the system is proposed and analyzed theoretically and through simulations and experiments on a 10kVA system with energy storage.


Associated projects

National public