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Decentralized model predictive voltage control of islanded DC microgrids

Abbasi, M ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC49159.2020.9088498
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. This paper proposes a novel decentralized control approach for islanded direct-current (DC) microgrids (MGs) based on model predictive control (MPC) to regulate the distributed generation unit (DGU) output voltages, i.e. the voltages of the point of common coupling (PCC). A local controller is designed for each DGU, in the presence of uncertainties, disturbances, and unmodeled dynamics. First, a discrete-time state-space model of an MG is derived. Afterward, an MPC algorithm is designed to perform the PCC voltage control. The proposed MPC scheme ensures that the PCC voltages remain within an acceptable range. Several simulation studies have been conducted to illustrate the effectiveness of MPC under load disturbances, uncertainties, and reference voltage changes in the MATLAB/SimPowerSystems environment. © 2020 IEEE
  6. Keywords:
  7. Decentralized control ; Islanded DC microgrid ; Load disturbance ; Model predictive control ; Electric fault currents ; MATLAB ; Microgrids ; Power electronics ; Predictive control systems ; State space methods ; Voltage control ; Decentralized models ; Discrete-time state space models ; Distributed generation units ; Local controllers ; Point of common coupling ; Reference voltages ; Simulation studies ; Unmodeled dynamics
  8. Source: 11th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2020, 4 February 2020 through 6 February 2020 ; 2020
  9. URL: https://ieeexplore.ieee.org/abstract/document/9088498