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International Journal of Emerging Electric Power Systems

Editor-in-Chief: Sidhu, Tarlochan

Ed. by Khaparde, S A / Rosolowski, Eugeniusz / Saha, Tapan K / Gao, Fei


CiteScore 2018: 0.86

SCImago Journal Rank (SJR) 2018: 0.220
Source Normalized Impact per Paper (SNIP) 2018: 0.430

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1553-779X
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Volume 14, Issue 6

Issues

Rotor Current Control of DFIG for Improving Fault Ride – Through Using a Novel Sliding Mode Control Approach

Guowei Cai / Cheng Liu
  • Corresponding author
  • School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206 China
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/ Deyou Yang
Published Online: 2013-11-09 | DOI: https://doi.org/10.1515/ijeeps-2012-0046

Abstract

The doubly fed induction generators (DFIG) have been recognized as the dominant technology used in wind power generation systems with the rapid development of wind power. However, continuous operation of DFIG may cause a serious wind turbine generators tripping accident, due to destructive over-current in the rotor winding which is caused by the power system fault or inefficient fault ride-through (FRT) strategy. A new rotor current control scheme in the rotor-side converter (RSC) ispresented to enhance FRT capacities of grid-connected DFIG. Due to the strongly nonlinear nature of DFIG and insensitive to DFIG parameter’s variations, a novel sliding mode controller was designed. The controller combines extended state observer (ESO) with sliding model variable structure control theory. The simulation is carried out to verify the effectiveness of the proposed control approach under various types of grid disturbances. It is shown that the proposed controller provides enhanced transient features than the classic proportional-integral control. The proposed control method can effectively reduce over-current in the RSC, and the transient pulse value of electromagnetic torque is too large under power grid fault.

Keywords: wind power; extend state observer; doubly fed induction generator; sliding mode control; rotor current

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About the article

Published Online: 2013-11-09


Citation Information: International Journal of Emerging Electric Power Systems, Volume 14, Issue 6, Pages 629–640, ISSN (Online) 1553-779X, ISSN (Print) 2194-5756, DOI: https://doi.org/10.1515/ijeeps-2012-0046.

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