http://iet.metastore.ingenta.com
1887

Behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags

Behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IET Electric Power Applications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This study analyses the dynamic behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags, providing insights into wind turbine fault ride-through capability. The sags are assumed to be caused by faults. An analytical approach assuming that the rotor-side converter can keep constant the rotor current in the synchronous reference frame during the event is used. The voltage limit of the rotor-side converter is also considered in order to determine the situations where the rotor current can be controlled. The effects of sags on grid-connected equipments depend on the sag characteristics (duration and depth), but also on the fault clearing process. In this process, the fault is not cleared instantaneously, as in the case of abrupt sags (which is the usual approach in the literature), but in the successive natural fault-current zeros, leading to a voltage recovery in several steps known as discrete sags. The effects of both abrupt and discrete sags on the doubly fed induction generator behaviour are compared. This comparison reveals that the discrete clearing process smoothes the sag effects on the generator.

References

    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
      • Gomis-Bellmunt, O., Junyent-Ferré, A., Sumper, A., Sudrià-Andreu, A., Mata, M., Sala, M.: `Control of a doubly-fed induction generator under unbalanced conditions considering the converter limits', 13thEuropean Conf. on Power Electronics and Applications, September 2009, Barcelona, Spain, p. 1–8.
    7. 7)
    8. 8)
    9. 9)
    10. 10)
      • M.H.J. Bollen . (2000) Understanding power quality problems: voltage sags and interruptions.
    11. 11)
    12. 12)
    13. 13)
      • Y.H. Ku . Rotating-field theory and general analysis of synchronous and induction machines. Proc. IEE–Part IV: Inst. Monogr. , 4 , 410 - 428
    14. 14)
    15. 15)
      • How a wind turbine comes together?. Wind Direct. , 32 - 33
    16. 16)
      • Fortescue, C.L.: `Method of symmetrical co-ordinates applied to the solution of polyphase networks', 34thAnnual Convention of the AIEE, June 1918, Atlantic City, NJ, p. 1027–1140.
    17. 17)
      • M. Braun . (1975) Differential equations and their applications.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-epa.2011.0226
Loading

Related content

content/journals/10.1049/iet-epa.2011.0226
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address