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Overcurrent estimation in a doubly-fed induction generator-DC system during a voltage dip in the dc grid

Overcurrent estimation in a doubly-fed induction generator-DC system during a voltage dip in the dc grid

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This study analyses the voltage dip behaviour of the doubly-fed induction generator (DFIG) connected to a common dc link on both the stator and rotor sides, via a diode bridge and a voltage source inverter (VSI), respectively. After a voltage dip in the dc grid, the rotor VSI can transiently lose control so that rotor currents circulate through the VSI free-wheeling diodes. However, during the uncontrolled period, both stator and rotor voltages are clamped to the same dc-link voltage and no rotor overvoltage occurs. In order to analyse the behaviour of the system during the first periods of the uncontrolled current transients, this study presents a simplified average model which is validated through simulations. Voltage dips are classified into three types depending on their severity. A simple analytical expression is derived for the maximum amplitude of the current during the voltage dip, and an overcurrent chart in the plane ‘rotor speed – dip amplitude’ is deduced. These results provide deep insight into the DFIG-DC system behaviour and are useful for design purpose.

References

    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
    16. 16)
    17. 17)
    18. 18)
    19. 19)
    20. 20)
    21. 21)
    22. 22)
    23. 23)
    24. 24)
      • 24. Marques, G.D.: ‘On park's models for the simulation of the slip power recovery drive’, in, Robert, J., Tran, D.K. (Eds), ‘Modelling and Simulation of Electrical Machines and Power Systems’, (Elsevier Science Publishers, B.V. North-Holland, IMACS, 1988), pp. 27–34.
    25. 25)
      • 25. Krause, P.C.: ‘Analysis of electrical machinery’ (IEEE Press, PiscatawayNJ, 1995).
    26. 26)
      • 26. Marques, G.D.: ‘A computer application for teaching and learning on the induction motor dynamics’, Enhancement of Education in Electrical and Information Engineering through Industry Co-operation and Research, 1998, pp. 173178, ISBN: 972-97738-0-7.
    27. 27)
      • 27. Abdi, E., Orae, A., Abdi, S., et al: ‘Design of the brushless DFIG for the optimal inverter rating. Seventh IET Int. Conf. on Power Electronics, Machines and Drives (PEMD 2014), Manchester, UK, 8–10 April 2014.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rpg.2015.0509
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