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A Decentralized Model Predictive Control for Operation of Multiple Distributed Generators in an Islanded Mode

Journal Article


Abstract


  • The increasing penetration of distributed and renewable generation presents power systems with a challenge of accommodating multiple inverter-based generators. Distributed generators (DGs), capable of operating in the islanded mode, are often installed in microgrids. However, a control system for operating multiple DGs in the islanded mode using voltage-sourced converters is a real challenge under uncertainties in load parameters, unbalanced phase conditions, and transients. This paper proposes a novel approach to decentralized control of multiple DGs. This approach is based on a combination of a voltage controller using model predictive control and a fast current controller using a discrete-Time sliding-mode controller for limiting the inverter currents under overload conditions. Performance of the proposed control system is compared with a robust servomechanism program controller. The proposed control strategy provides fast tracking, robustness, and fast transient recovery in voltage and current under: 1) short-circuit conditions; 2) load transients; and 3) unbalanced loads. Various scenarios including reference signal tracking and robustness against the load perturbations are considered. Results are presented and discussed.

UOW Authors


  •   Tavakoli, Ahmad (external author)
  •   Negnevitsky, Michael (external author)
  •   Muttaqi, Kashem

Publication Date


  • 2017

Citation


  • A. Tavakoli, M. Negnevitsky & K. M. Muttaqi, "A Decentralized Model Predictive Control for Operation of Multiple Distributed Generators in an Islanded Mode," IEEE Transactions on Industry Applications, vol. 53, (2) pp. 1466-1475, 2017.

Scopus Eid


  • 2-s2.0-85017613999

Number Of Pages


  • 9

Start Page


  • 1466

End Page


  • 1475

Volume


  • 53

Issue


  • 2

Place Of Publication


  • United States

Abstract


  • The increasing penetration of distributed and renewable generation presents power systems with a challenge of accommodating multiple inverter-based generators. Distributed generators (DGs), capable of operating in the islanded mode, are often installed in microgrids. However, a control system for operating multiple DGs in the islanded mode using voltage-sourced converters is a real challenge under uncertainties in load parameters, unbalanced phase conditions, and transients. This paper proposes a novel approach to decentralized control of multiple DGs. This approach is based on a combination of a voltage controller using model predictive control and a fast current controller using a discrete-Time sliding-mode controller for limiting the inverter currents under overload conditions. Performance of the proposed control system is compared with a robust servomechanism program controller. The proposed control strategy provides fast tracking, robustness, and fast transient recovery in voltage and current under: 1) short-circuit conditions; 2) load transients; and 3) unbalanced loads. Various scenarios including reference signal tracking and robustness against the load perturbations are considered. Results are presented and discussed.

UOW Authors


  •   Tavakoli, Ahmad (external author)
  •   Negnevitsky, Michael (external author)
  •   Muttaqi, Kashem

Publication Date


  • 2017

Citation


  • A. Tavakoli, M. Negnevitsky & K. M. Muttaqi, "A Decentralized Model Predictive Control for Operation of Multiple Distributed Generators in an Islanded Mode," IEEE Transactions on Industry Applications, vol. 53, (2) pp. 1466-1475, 2017.

Scopus Eid


  • 2-s2.0-85017613999

Number Of Pages


  • 9

Start Page


  • 1466

End Page


  • 1475

Volume


  • 53

Issue


  • 2

Place Of Publication


  • United States