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Enhancement of fault ride through capabilities for grid-connected DFIG-based wind farms using nonlinear adaptive backstepping controllers

conference contribution
posted on 2018-01-01, 00:00 authored by Tushar Kanti Roy, Apel MahmudApel Mahmud, Shama IslamShama Islam, Aman Maung Than OoAman Maung Than Oo, K M Muttaqi
In this paper, nonlinear adaptive backstepping controllers are designed for grid-connected wind energy conversion systems (WECSs) with doubly-fed induction generators (DFIGs) in order to enhance the fault ride through (FRT) capability. The main control objectives are to ensure the desired power injection (both active and reactive) into the grid while enhancing the FRT capability. The proposed adaptive controllers are designed for grid-side and rotor-side converters by considering dynamics of these converters along with the dynamic of the DC-link voltage. These controllers are designed to provide robustness against parametric uncertainties and for this purpose, all relevant parameters are considered as unknown. The unknown parameters are estimated through the adaptation laws and these adaptation laws along with the control actions for converters are obtained in such a way that the convergence of different physical properties of wind farms is ensured. The effectiveness of the proposed control scheme is validated on a single DFIG-based 9 MW WECS by applying severe three-phase short-circuit faults on the connection point of the wind farm. The performance of the proposed controller is also compared with an existing adaptive sliding mode control (EASMC) scheme in terms of active power injection, reactive power support, and voltage sag at the point of common coupling (PCC) along with fluctuations in the DC-bus voltage.

History

Event

IEEE Industry Applications Society. Conference (2018 : Chennai, India)

Series

IEEE Industry Applications Society Conference

Pagination

1 - 6

Publisher

Institute of Electrical and Electronics Engineers

Location

Chennai, India

Place of publication

Piscataway, N.J.

Start date

2018-12-18

End date

2018-12-21

ISBN-13

9781538693155

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2018, IEEE

Editor/Contributor(s)

[Unknown]

Title of proceedings

PEDES 2018 : Proceedings of the 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems