LVRT capability enhancement of DFIG based wind turbine with coordination control of dynamic voltage restorer and inductive fault current limiter

PLoS One. 2019 Aug 27;14(8):e0221410. doi: 10.1371/journal.pone.0221410. eCollection 2019.

Abstract

According to the coordination control of a dynamic voltage restorer (DVR) and an inductive fault current limiter (FCL), this paper proposes an efficient low-voltage ride-through (LVRT) scheme for a doubly fed induction generator (DFIG) based wind turbine. The DVR is located to the DFIG's stator circuit for stabilizing the terminal voltage and decreasing the generator current. The inductive FCL is connected to the DFIG's rotor circuit for suppressing the rotor overcurrent and protecting the converter. Theoretical discussions on structure, principle and scale criterion of the combined DVR-FCL are conducted, and simulation analyses of the proposed approach to handle symmetrical and asymmetrical faults are done in MATLAB/Simulink. In this study, the dynamic characteristics of the DFIG during the faults are analyzed from multiple aspects, and a detailed comparison of the proposed approach and the single action of DVR or FCL is carried out. From the simulation results, the effectiveness and superiority of the proposed approach are well demonstrated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer Simulation
  • Electric Power Supplies*
  • Electromagnetic Phenomena
  • Humans
  • Models, Theoretical*
  • Torque
  • Wind*

Associated data

  • figshare/10.6084/m9.figshare.8557562.v1

Grants and funding

This work was supported by the National Natural Science Foundation of China (51507117), and the Fundamental Research Funds for the Central Universities (2042018kf0214). State Grid Hubei Electric Power Company Limited Economic Research Institute, provided support in the form of salaries for authors DZ, HX, and LQ, but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of these authors are articulated in the ‘author contributions’ section.