PI Passivity-Based Control and Performance Analysis of MMC Multi-terminal HVDC Systems

Gilbert Bergna-Diaz (1) , Daniele Zonetti (2) , Santiago Sanchez (1) , Romeo Ortega (3) , Elisabetta Tedeschi (1)

1 NTNU - Norwegian University of Science and Technology [Trondheim]
2 LSV - Laboratoire Spécification et Vérification [Cachan]
3 L2S - Laboratoire des signaux et systèmes

In this work, a decentralized PI passivity-based controller (PI-PBC) is applied to Modular Multilevel Converters (MMCs) to ensure global stability of a multi-terminal HVDC system. For the derivation of the controller, an appropriate model with constant steady-state solutions is obtained via a multi-frequency orthogonal coordinates transformation. The control design is next completed using passivity arguments and performance guarantees are established by a small-signal analysis. The obtained results are validated by means of detailed time-domain simulations both on a single-terminal and a four-terminal benchmark.

Keywords: Modular Multilevel Converter; PI Passivity-based Control; Port-Hamiltonian Modelling

Domains: Computer Science [cs]; Automatic Control Engineering; Engineering Sciences [physics]; Automatic

Gilbert Bergna-Diaz, Daniele Zonetti, Santiago Sanchez, Romeo Ortega, Elisabetta Tedeschi. PI Passivity-Based Control and Performance Analysis of MMC Multi-terminal HVDC Systems. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 7 (4), pp.2453-2466. ⟨10.1109/JESTPE.2018.2889152⟩. ⟨hal-02419459⟩