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Träfflista för sökning "WFRF:(Wang Xiongfei) srt2:(2018)"

Sökning: WFRF:(Wang Xiongfei) > (2018)

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1.
  • Zhang, Hongyang, et al. (författare)
  • A Closed-Loop Model for Stability Analysis of Grid-Connected Voltage-Source Converters
  • 2018
  • Ingår i: 2018 IEEE INTERNATIONAL POWER ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC). - : IEEE. - 9781538660546 ; , s. 975-980
  • Konferensbidrag (refereegranskat)abstract
    • With an increasing number of grid-connected voltage-source converters in the power system, the stability analysis for the converter-grid interactions is of great interest. This paper proposes a linearized closed-loop model for predicting such stability problems, especially for those occurring under weak-grid conditions. Differing from the other known modeling approaches, a closed-loop model is constructed based on the transfer functions and it contains the control functions as well as the grid impedance. The stability and the individual controller impact can be assessed by the poles and zeros of the closed-loop transfer functions. Lastly, the linearized model is validated against the corresponding time-domain simulations and its excellent accuracy is proofed.
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2.
  • Zhang, Hongyang, et al. (författare)
  • SISO Transfer Functions for Stability Analysis of Grid-Connected Voltage-Source Converters
  • 2018
  • Ingår i: 2018 International Power Electronics Conference (IPEC-NIIGATA 2018 -ECCE ASIA). - : Institute of Electrical and Electronics Engineers (IEEE). - 9784886864055 ; , s. 3684-3691
  • Konferensbidrag (refereegranskat)abstract
    • Converter grid interaction is of great interest in a weak-grid condition. In this paper, an alternative multi-input multi-output closed-loop system is developed for the stability analysis of grid-connected voltage-source converters. In contrast to the conventional dq-impedance model and the eigenvalue analysis, this model eventually yields a single-input single-output transfer function. This enables to apply a single Nyquist curve for analyzing the overall system stability. The model is validated against time domain simulations and it shows excellent accuracy for predicting the system stability.
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  • Resultat 1-2 av 2
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refereegranskat (2)
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Wang, Xiongfei (2)
Zhang, Hongyang (2)
Nee, Hans-Peter, 196 ... (1)
Harnefors, Lennart (1)
Hasler, Jean-Philipp ... (1)
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2018 (2)Ta bort avgränsningen

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