Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Design of DFIG Converters to Overcome Grid Faults Using Improved Stator Flux Based Field Oriented Control and STATCOM Controller

Design of DFIG Converters to Overcome Grid Faults Using Improved Stator Flux Based Field Oriented... The doublyfed induction generator based wind energy conversion system is attracting the energy production market for the last decade. It is due to the facts like large rating single unit, withstand to grid disturbances, independent real and reactive power flow control and mainly low power converter ratings. However, under severe short circuit faults, the doubly fed induction generator (DFIG) is constrained to be in synchronism with the grid as is posed by the modern grid codes. For this, dynamic and transient response of DFIG converter unit control needs to be modified for sustainability and reliability. The article will show that DFIG will follow better grid code requirements using proposed improved stator flux based field oriented control scheme in Rotor Side Converter. Further, a three levels STATCOM controller is externally placed near the grid point to further increase its capability under transients. This can be achieved by minimizing DC offset currents to zero by controlling stator flux decay during transients. The stator d and q axis flux wave is circular during steady state and also deviate its shape and characteristics during transients. This feature is restored using proposed FOC technique and helps in maintaining a minimum voltage and current in rotor and stator circuit. This technique not only improves LVRT but also ensures a longer lifetime of the machine during major disturbances. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Technology and Economics of Smart Grids and Sustainable Energy Springer Journals

Design of DFIG Converters to Overcome Grid Faults Using Improved Stator Flux Based Field Oriented Control and STATCOM Controller

Download PDF
16 pages

Loading next page...
 
/lp/springer-journals/design-of-dfig-converters-to-overcome-grid-faults-using-improved-stYJpgNMtJ
Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Nature Singapore Pte Ltd.
Subject
Energy; Energy Systems; Power Electronics, Electrical Machines and Networks; Energy Economics
eISSN
2199-4706
DOI
10.1007/s40866-018-0049-6
Publisher site
See Article on Publisher Site

Abstract

The doublyfed induction generator based wind energy conversion system is attracting the energy production market for the last decade. It is due to the facts like large rating single unit, withstand to grid disturbances, independent real and reactive power flow control and mainly low power converter ratings. However, under severe short circuit faults, the doubly fed induction generator (DFIG) is constrained to be in synchronism with the grid as is posed by the modern grid codes. For this, dynamic and transient response of DFIG converter unit control needs to be modified for sustainability and reliability. The article will show that DFIG will follow better grid code requirements using proposed improved stator flux based field oriented control scheme in Rotor Side Converter. Further, a three levels STATCOM controller is externally placed near the grid point to further increase its capability under transients. This can be achieved by minimizing DC offset currents to zero by controlling stator flux decay during transients. The stator d and q axis flux wave is circular during steady state and also deviate its shape and characteristics during transients. This feature is restored using proposed FOC technique and helps in maintaining a minimum voltage and current in rotor and stator circuit. This technique not only improves LVRT but also ensures a longer lifetime of the machine during major disturbances.

Journal

Technology and Economics of Smart Grids and Sustainable Energy – Springer Journals

Published: Sep 21, 2018

References

  • An effective reference generation scheme for DFIG with unbalanced grid voltage
    Asha Rani, MA
  • Improving fault ride-through capability of variable speed wind turbines in distribution networks
    Mokryani, G; Siano, P; Piccolo, A; Chen, Z
  • Feed-forward transient current control for low-voltage ride-through enhancement of DFIG wind turbines
    Liang, J; Qiao, W; Harley, RG
  • Dynamic behavior of the doubly fed induction generator during three-phase voltage dips
    Lopez, J; Sanchis, P; Roboam, X; Marroyo, L
  • Ride through of wind turbines with doubly-fed induction generator during a voltage dip
    Morren, J; Haan, SWH
  • Ride-through analysis of doubly fed induction wind-power generator under unsymmetrical network disturbance
    Seman, S; Niiranen, J; Arkkio, A
  • Evaluation of the performance of a DC-link brake chopper as a DFIG low-voltage fault-ride-through device
    Pannell, G; Zahawi, B; Atkinson, DJ; Missailidis, P
  • Robust damping controller design in power systems with superconducting magnetic energy storage devices
    Pal, BC; Coonick, AH; Macdonald, DC
  • Control of offshore DFIG-based wind farm grid with line-commutated HVDC connection
    Bozhko, RB-G; Li, R; Clare, JC; Asher, GM
  • Large offshore DFIG-based wind farm with line-commutated HVDC connection to the main grid: engineering studies
    Bozhko, S; Asher, G; Li, R; Clare, J; Yao, L
  • Coordinated reactive power control of a large wind farm and a STATCOM using heuristic
    Qiao, W; Harley, RG; Venayagamoorthy, GK
  • Real-time implementation of a STATCOM on a wind farm equipped with doubly fed induction generators
    Qiao, W; Venayagamoorthy, GK; Harley, RG
  • Dynamic stability improvement of an integrated grid-connected offshore wind farm and marine-current farm using a STATCOM
    Wang, L; Hsiung, C-T
  • Analysis and synthesis of fault-tolerant control systems
    Mahmoud, MS; Xia, Y