Direct power control of DFIG with constant switching frequency and improved transient performance

D. Zhi, L. Xu

Research output: Contribution to journalArticle

274 Citations (Scopus)

Abstract

This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active and reactive power errors within each fixed time period, is directly calculated based on stator flux, rotor position, and active and reactive powers and their corresponding errors. No extra power or current control loops are required, simplifying the system design, and improving transient performance. Constant converter switching frequency is achieved that eases the design of the power converter and the ac harmonic filter. Rotor voltage limit during transients is investigated, and a scheme is proposed that prioritizes the active and reactive power control such that one remains fully controlled while the error of the other is reduced. The impact of machine parameter variations on system performance is investigated and found negligible. Simulation results for a 2 MW DFIG system demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, machine parameters, and wind speed
LanguageEnglish
Pages110-118
Number of pages8
JournalIEEE Transactions on Energy Conversion
Volume22
Issue number1
DOIs
Publication statusPublished - Mar 2007

Fingerprint

Asynchronous generators
Switching frequency
Reactive power
Power control
Rotors
Electric current control
Power converters
Voltage control
Wind turbines
Stators
Systems analysis
Fluxes
Electric potential

Keywords

  • constant switching frequency
  • DFIG
  • direct power control
  • pulse width modulation (PWM) converter
  • wind energy

Cite this

@article{44cc9d81fb814564b77cec63975efcf9,
title = "Direct power control of DFIG with constant switching frequency and improved transient performance",
abstract = "This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active and reactive power errors within each fixed time period, is directly calculated based on stator flux, rotor position, and active and reactive powers and their corresponding errors. No extra power or current control loops are required, simplifying the system design, and improving transient performance. Constant converter switching frequency is achieved that eases the design of the power converter and the ac harmonic filter. Rotor voltage limit during transients is investigated, and a scheme is proposed that prioritizes the active and reactive power control such that one remains fully controlled while the error of the other is reduced. The impact of machine parameter variations on system performance is investigated and found negligible. Simulation results for a 2 MW DFIG system demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, machine parameters, and wind speed",
keywords = "constant switching frequency, DFIG, direct power control, pulse width modulation (PWM) converter, wind energy",
author = "D. Zhi and L. Xu",
year = "2007",
month = "3",
doi = "10.1109/TEC.2006.889549",
language = "English",
volume = "22",
pages = "110--118",
journal = "IEEE Transactions on Energy Conversion",
issn = "0885-8969",
number = "1",

}

Direct power control of DFIG with constant switching frequency and improved transient performance. / Zhi, D.; Xu, L.

In: IEEE Transactions on Energy Conversion, Vol. 22, No. 1, 03.2007, p. 110-118.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Direct power control of DFIG with constant switching frequency and improved transient performance

AU - Zhi, D.

AU - Xu, L.

PY - 2007/3

Y1 - 2007/3

N2 - This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active and reactive power errors within each fixed time period, is directly calculated based on stator flux, rotor position, and active and reactive powers and their corresponding errors. No extra power or current control loops are required, simplifying the system design, and improving transient performance. Constant converter switching frequency is achieved that eases the design of the power converter and the ac harmonic filter. Rotor voltage limit during transients is investigated, and a scheme is proposed that prioritizes the active and reactive power control such that one remains fully controlled while the error of the other is reduced. The impact of machine parameter variations on system performance is investigated and found negligible. Simulation results for a 2 MW DFIG system demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, machine parameters, and wind speed

AB - This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active and reactive power errors within each fixed time period, is directly calculated based on stator flux, rotor position, and active and reactive powers and their corresponding errors. No extra power or current control loops are required, simplifying the system design, and improving transient performance. Constant converter switching frequency is achieved that eases the design of the power converter and the ac harmonic filter. Rotor voltage limit during transients is investigated, and a scheme is proposed that prioritizes the active and reactive power control such that one remains fully controlled while the error of the other is reduced. The impact of machine parameter variations on system performance is investigated and found negligible. Simulation results for a 2 MW DFIG system demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, machine parameters, and wind speed

KW - constant switching frequency

KW - DFIG

KW - direct power control

KW - pulse width modulation (PWM) converter

KW - wind energy

UR - http://ieeexplore.ieee.org/iel5/60/4105991/04106023.pdf?tp=&arnumber=4106023&isnumber=4105991

UR - http://dx.doi.org/10.1109/TEC.2006.889549

U2 - 10.1109/TEC.2006.889549

DO - 10.1109/TEC.2006.889549

M3 - Article

VL - 22

SP - 110

EP - 118

JO - IEEE Transactions on Energy Conversion

T2 - IEEE Transactions on Energy Conversion

JF - IEEE Transactions on Energy Conversion

SN - 0885-8969

IS - 1

ER -