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A superimposed frequency method with an adaptive droop characteristic for DC microgrids

Jafari Matehkolaei, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/ACEMP-OPTIM44294.2019.9007137
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. This paper proposes an adaptive droop characteristic to enhance the superimposed droop frequency scheme for the control of DC microgrids. Conventional superimposed droop frequency scheme solves the poor current sharing and undesirable voltage regulation issues in DC microgrid. However, this method suffers from two main problems which are (i) instability in terms of load variation due to the limitation in transferrable reactive power, and (ii) poor voltage quality caused by the injected AC voltages in the DC system. In this paper, an adaptive droop characteristic is proposed to decrease the transferred reactive power and mitigate system overall voltage quality, and its performance is verified through simulation. © 2019 IEEE
  6. Keywords:
  7. Current-sharing ; DC microgrid ; Droop characteristic ; Maximum load of the system ; Microgrid ; Superimposed droop frequency method ; Voltage regulation ; Electric machinery ; Oscillators (electronic) ; Power electronics ; Reactive power ; Voltage control ; Voltage regulators ; Dc micro-grid ; Droop characteristics ; Frequency methods ; Maximum load ; Micro grid ; Voltage quality ; Microgrids
  8. Source: 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019, 27 August 2019 through 29 August 2019 ; 2019 , Pages 447-452 ; 9781538676875 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/9007137