Advertisement

Experimental validation of SMC-based DTC-VC for DFIG-WECS

  • Kiran Kumar JaladiEmail author
Original Paper
  • 2 Downloads

Abstract

This paper proposes the decoupling control of direct torque control (DTC) and vector control (VC) for doubly fed induction generator (DFIG)-based wind energy system (WES). DTC controls the generator speed, torque and rotor flux; similarly VC regulates the capacitor link voltage and power quality of grid. Furthermore, proposed technique analyzed with sliding mode control (SMC) and conventional controllers independently. SMC shows better improvements of both stator and rotor currents, capacitor link voltage, torque and generator speed in contrast to proportional and integral controller. The proposed DTC-VC aims to improve performance of transient and dynamic behavior of DFIG-based WES during sine nature of torque and random as well as step change variation of generator speed. It is also tested in real-time environment at 7.5 hp as well as MATLAB/Simulink of 5.5 kw rating.

Keywords

Doubly fed induction generator Wind energy system Sliding mode control Direct torque control 

Nomenclature

\(\beta \)

position of blade angle

\(\lambda \)

turbine coefficient

\(\mathop {i}\nolimits _\mathrm{ds} \), \(\mathop {i}\nolimits _\mathrm{qs} \) and \(\mathop {i}\nolimits _\mathrm{dr} \), \(\mathop {i}\nolimits _\mathrm{qr} \)

stator, rotor dq-axis currents

\(\mathop {P}\nolimits _\mathrm{s}\)

active and reactive

\(\mathop {Q}\nolimits _\mathrm{s}\)

reactive and reactive

\(\mathop {T}\nolimits _\mathrm{e}\)

electromagnetic torque

\(\mathop {V}\nolimits _\mathrm{ds} \), \(\mathop {V}\nolimits _\mathrm{qs} \) and \(\mathop {V}\nolimits _\mathrm{dr} \), \(\mathop {V}\nolimits _\mathrm{qr} \)

stator, rotor dq-axis voltages

\(\mathop {k,k}\nolimits _1,\mathop {k}\nolimits _2,\mathop {k}\nolimits _3\)

constants

\(\rho \)

air density

\(R_\mathrm{s}\), \(R_\mathrm{r}\)

resistance of stator and rotor

\({\omega _\mathrm{r}}\)

rotating speed of rotor

\({C_\mathrm{p}}\)

power coefficient

\({V_\mathrm{w}}\)

wind velocity

CDTC

conventional direct torque control

DFIG

doubly fed induction generator

DPC

direct power control

GSC

grid side converter

p

pole pair

PWM

pulse width modulation

R

length of the blade

RE

renewable energy

RSC

rotor side converter

SMC

sliding mode control

SVM

space vector modulation

VC

vector control

WE

wind energy

Notes

References

  1. 1.
    Chen A, Xie D, Zhang D, Gu C, Wang K (2018) PI parameter tuning of converters for sub synchronous interactions existing in grid-connected DFIG wind turbines. IEEE Trans Power Electron 34:6345–6355CrossRefGoogle Scholar
  2. 2.
    Wu C, Nian H, Pang B, Cheng P (2019) Adaptive repetitive control of DFIG-DC system considering stator frequency variation. IEEE Trans Power Electron 34:3302–3312CrossRefGoogle Scholar
  3. 3.
    Marques GD, Iacchetti MF (2019) DFIG topologies for DC networks: a review on control and design features. IEEE Trans Power Electron 34:1299–1316CrossRefGoogle Scholar
  4. 4.
    Han Y, Ha J (2019) Droop control using impedance of grid-integrated DFWG within microgrid. IEEE Trans Energy Conversion 34:88–97CrossRefGoogle Scholar
  5. 5.
    Takahashi I, Noguchi T (1986) A new quick-response and high-efficiency control strategy of an induction motor. IEEE Trans Ind Appl IA–22(5):820–827CrossRefGoogle Scholar
  6. 6.
    Jadhav SV, Kirankumar J, Chaudhari BN (2012) ANN based intelligent control of induction motor drive with space vector modulated DTC. In: 2012 IEEE international conference on power electronics, drives and energy systems (PEDES). Bengaluru, pp 1–6Google Scholar
  7. 7.
    Jadhav S, Jaladi K (2016) Advanced VSC and intelligent control algorithms applied to SVM DTC for induction motor drive a comparative study. In: 2016 12th world congress on intelligent control and automation (WCICA). pp 2694–2698Google Scholar
  8. 8.
    Datta R, Ranganathan VT (2001) Direct power control of grid-connected wound rotor induction machine without rotor position sensors. IEEE Trans Power Electron 16(3):390–399CrossRefGoogle Scholar
  9. 9.
    Jaladi KK, Sandhu KS (2019) A new hybrid control scheme for minimizing torque and flux ripple for DFIG-based WES under random change in wind speed. Int Trans Electr Energ Syst 29:e2818CrossRefGoogle Scholar
  10. 10.
    Baader U, Depenbrock M, Gierse G (1992) Direct self control (DSC) of inverter-fed induction machine a basis for speed control without speed measurement. IEEE Trans Ind Appl 28(3):581–588CrossRefGoogle Scholar
  11. 11.
    Baesmat HJ, Bodson M (2018) Pole placement control for doubly-fed induction generators using compact representations in complex variables. IEEE Trans Energy Convers 34:750–760CrossRefGoogle Scholar
  12. 12.
    Justo JJ, Mwasilu F, Jung JW (2018) Effective protection for doubly fed induction generator-based wind turbines under three-phase fault conditions. Electr Eng 100:543–556CrossRefGoogle Scholar
  13. 13.
    Izanlo A, Gholamian SA (2018) Kazemi MV (2018) Using of four-switch three-phase converter in the structure DPC of DFIG under unbalanced grid voltage condition. Electr Eng 100:1925–1938CrossRefGoogle Scholar
  14. 14.
    Ouezgan K, Bossoufi B, Bargach MN (2017) DTC control of DFIG-generators for wind turbines: FPGA implementation based. In: 2017 international renewable and sustainable energy conference (IRSEC), Tangier, pp 1–6Google Scholar
  15. 15.
    Chen SZ, Cheung NC, Chung Wong K, Wu J (2010) Integral sliding-mode direct torque control of doubly-fed induction generators under unbalanced grid voltage. IEEE Trans Energy Convers 25(2):356–368CrossRefGoogle Scholar
  16. 16.
    Arbi J, Ghorbal MJ, Slama-Belkhodja I, Charaabi L (2009) Direct virtual torque control for doubly fed induction generator grid connection. IEEE Trans Industr Electron 56(10):4163–4173Google Scholar
  17. 17.
    Sun D, Wang X, Nian H, Zhu ZQ (2018) A sliding-mode direct power control strategy for DFIG under both balanced and unbalanced grid conditions using extended active power. IEEE Trans Power Electron 33(2):1313–1322Google Scholar
  18. 18.
    Martinez MI, Susperregui A, Tapia G (2017) Second-order sliding-mode-based global control scheme for wind turbine-driven DFIGs subject to unbalanced and distorted grid voltage. IET Electr Power Appl 11(6):1013–1022, 7CrossRefGoogle Scholar
  19. 19.
    Jaladi KK, Sandhu KS (2018) DC-link transient improvement of SMC based hybrid control of DFIG-WES under asymmetrical grid faults. Int Trans Electr Energ Syst 28:e2633CrossRefGoogle Scholar
  20. 20.
    Jaladi KK, Sandhu KS (2019) Real-time simulator based hybrid control of DFIG-WES. ISA Trans.  https://doi.org/10.1016/j.isatra.2019.03.024
  21. 21.
    Marchi RA, Dainez PS, Von Zuben FJ, Bim E (2014) A multilayer perceptron controller applied to the direct power control of a Doubly fed induction generator. IEEE Trans Sustain Energy 5(2):498–506CrossRefGoogle Scholar
  22. 22.
    Pena R, Clare JC, Asher GM (1996) Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation. IEE Proc Electr Power Appl 143(3):231–241CrossRefGoogle Scholar
  23. 23.
    Errouissi R, Al-Durra A, Muyeen SM, Leng S, Blaabjerg F (2017) Offset-free direct power control of dfig under continuous-time model predictive control. IEEE Trans Power Electron 32(3):2265–2277CrossRefGoogle Scholar
  24. 24.
    Zhu R, Deng F, Chen Z, Liserre M (2016) Enhanced control of DFIG wind turbine based on stator flux decay compensation. IEEE Trans Energy Convers 31(4):1366–1376CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electrical EngineeringNational Institute of TechnologyKurukshetraIndia

Personalised recommendations