Research Article | OPEN ACCESS
A New Reference Signal Generation and DC-link Control for Fault Mitigation and Power Quality Improvement of DFIG
1P.T. Rajan and 2Dharmishtan K. Vaughese
1Department of Electrical and Electronics Engineering, Karpagam Polytechnic College
2Department of Electronics and Communication Engineering, Karpagam College of Engineering, Coimbatore, India
Research Journal of Applied Sciences, Engineering and Technolog 2015 9:988-996
Received: November 7, 2014 | Accepted: January 23, 2015 | Published: July 25, 2015
Abstract
This study delivers a new approach for reference signal generation to improve the power quality problem of Doubly Fed Induction Generator (DFIG). DFIG consists of RSC (Rotor Side Converter) and GSC (Grid Side Converter) and common DC-Link. RSC converter used to mitigate the sag and swell compensation by enhanced phase lock loop and variable speed Limit. The aim of GSC is to mitigate the current harmonics and load balancing control by non-linear adaptive filter approach. The 60% of DC-Link voltage control obtained by GSC and remaining 40% of sag is controlled by the external chopper through the DC-Link voltage balancing. Additional chopper is presented to reduce the size, stress of DC-Link capacitor and also it avoids additional control loop in GSC. The system power qualities are verified through simulation studies.
Keywords:
Active filtering, DC-link control, DFIG, reference signal generation , sag/swell,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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The authors have no competing interests.
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