Passivity-based control of multi-terminal HVDC systems under control saturation constraints

This paper proposes a decentralized, passivity-based control design for power stations in a multi-terminal High Voltage Direct Current transmission system. The control algorithm is shown to asymptotically stabilize the closed-loop system when the voltage set points are appropriately selected. The analysis is carried out taking into account actual power, current and voltage saturations that affect power stations and, consequently, the control action. Numerical results illustrate the performance of the obtained controllers.