A Fault Ride-Through Technique of DFIG Wind Turbine Systems Using Dynamic Voltage Restorers

Title
A Fault Ride-Through Technique of DFIG Wind Turbine Systems Using Dynamic Voltage Restorers
Author(s)
아흐마드이브라힘[아흐마드이브라힘]누옌탄하이[누옌탄하이]이동춘김수창[김수창]
Keywords
FED INDUCTION GENERATOR
Issue Date
201109
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON ENERGY CONVERSION, v.26, no.3, pp.871 - 882
Abstract
This paper proposes a low-voltage ride-through technique of a doubly fed induction generator (DFIG) wind turbine system using a dynamic voltage restorer (DVR). For effective control of the DVR, digital all-pass filters are used for extracting the positive-sequence component from the unbalanced grid voltage since they have the advantages of giving a desired phase shift and no magnitude reduction over conventional low- or high-pass filters. Using the positive-sequence component, the phase angles for the positive- and negative-sequence components of the grid voltage are derived. A control algorithm for the DVR that is dual voltage controllers only is implemented for the two sequence components in the dq synchronous reference frame. In order to achieve the power rating reduction of the DVR, the stator power reference for the DFIG is reduced during faults. In addition, a control scheme of pitch angle system is applied to stabilize the operation of the wind turbine system in the event of grid faults. PSCAD/EMTDC simulations show the effectiveness of the proposed technique and a feasibility of reducing the power rating of DVR for the fault ride-through capability of DFIG. The validity of the proposed control scheme for the DVR has also been verified by experimental results.
URI
http://hdl.handle.net/YU.REPOSITORY/24640http://dx.doi.org/10.1109/TEC.2011.2158102
ISSN
0885-8969
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공과대학 > 전기공학과 > Articles
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