PI passivity-based control of modular multilevel converters for multi-terminal HVDC systems

Authors

Gilbert Bergna-Diaz, Daniele Zonetti, Santiago Sanchez, Elisabetta Tedeschi, Romeo Ortega

Abstract

In this work, a decentralized PI passivity-based controller (PI-PBC) is applied to the Modular Multilevel Converters (MMCs) to ensure global asymptotic stability of a multiterminal MT-HVDC system. Since continuous MMC state-space models naturally have time-periodic steady-state solutions, a first step towards the derivation of the controller is the formulation of an equivalent model characterized by constant steady-state solutions, obtained via a multi-frequency orthogonal coordinates transformation. For the design of the controller, the overall system is represented in an appropriate port-Hamiltonian formulation, which allows the derivation of the stabilizing control law using passivity-based arguments. The results are validated on a three-terminal simulation benchmark.

Citation

• Journal: 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)
• Year: 2017
• Volume:
• Issue:
• Pages: 1–8
• Publisher: IEEE
• DOI: 10.1109/compel.2017.8013329

BibTeX

@inproceedings{Bergna_Diaz_2017,
  title={{PI passivity-based control of modular multilevel converters for multi-terminal HVDC systems}},
  DOI={10.1109/compel.2017.8013329},
  booktitle={{2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)}},
  publisher={IEEE},
  author={Bergna-Diaz, Gilbert and Zonetti, Daniele and Sanchez, Santiago and Tedeschi, Elisabetta and Ortega, Romeo},
  year={2017},
  pages={1--8}
}

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References

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