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Controllable DC-link bridge-type FCL for low voltage ride-through enhancement of converter interfaced DG systems


Jalilian, A and Naderi, SB and Negnevitsky, M and Hagh, MT, Controllable DC-link bridge-type FCL for low voltage ride-through enhancement of converter interfaced DG systems, Electrical Power and Energy Systems, 95 pp. 653-663. ISSN 0142-0615 (2018) [Refereed Article]

Copyright Statement

Copyright 2017 Elsevier Ltd.

DOI: doi:10.1016/j.ijepes.2017.09.022


Recently penetration level of converter-interfaced distributed generation (DG) systems has been increased in utility and will be more so in the future. To avoid grid instability, converter-interfaced DG should have low voltage ride through (LVRT) capability considering grid codes. An efficient scheme is proposed to enhance the LVRT capability of converter-interfaced DGs. The proposed LVRT technique employs a single phase controllable DC-link bridge type fault current limiter (CD-BFCL), which is placed in DC side of the converter. During normal condition, the CD-BFCL does not affect overall operation of converter-interfaced DG; whereas, during all AC faults including balanced, unbalanced, and transient repeated network faults, converter output AC currents are limited to a desired level. In this way, the converter-interfaced DG is capable to ride through faults even at the zero grid voltage during the AC grid faults. Analytics and modes of operation of the CD-BFCL are presented during switching intervals to demonstrate the efficiency of the proposed approach in limitation of converter over-current. The operation of the proposed method is proved through simulation studies in PSCAD/EMTDC. Also, a laboratory prototype is developed to validate the possibility of practical implementation of the CD-BFCL.

Item Details

Item Type:Refereed Article
Keywords:low voltage ride-through, distributed generation, voltage-sourced converter, DC-link, controllable fault current limiter
Research Division:Engineering
Research Group:Control engineering, mechatronics and robotics
Research Field:Field robotics
Objective Division:Manufacturing
Objective Group:Machinery and equipment
Objective Field:Machinery and equipment not elsewhere classified
UTAS Author:Naderi, SB (Dr Seyedbehzad Naderi)
UTAS Author:Negnevitsky, M (Professor Michael Negnevitsky)
ID Code:124533
Year Published:2018
Web of Science® Times Cited:7
Deposited By:Engineering
Deposited On:2018-02-23
Last Modified:2018-04-23

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