Behavior of DFIG Based Wind Energy Conversion System Due to Short Circuit of DC-Link Capacitor

Authors(2) :-V. K. Chaudhary, Kuldeep Sahay

The aim of this paper is to present the complete modelling and simulation of wind turbine driven doubly fed induction generator which feeds AC power to the utility grid. For that, two pulse width modulated voltage source converters are connected back-to-back between the rotor terminals and utility grid via common DC-link. The grid side converter controls the power flow between the DC-bus and the AC-side and allows the system to be operated in sub-synchronous and super-synchronous mode of operation. Here, the effect of DC-link electrolytic capacitor malfunction of DFIG based wind energy conversion system (WECS) is investigated. The degradation of electrolytic capacitor can lead to the malfunction of DC-link. As DFIG based WECS utilize low power converter, so there is a requirement to investigate the effects of capacitor short circuit. This breakdown (short circuit of capacitor) leads to the power ullage, high machine currents, high transient currents in rotor circuit, low terminal voltage of the generator and increase in generator speed. All these scenarios have been simulated with the help of the simulation program using MATLAB and its inbuilt components provided in SIMULINK library to study the effects of DC-link capacitor short circuit on different parameters of system.

Authors and Affiliations

V. K. Chaudhary
M. Tech(scholar), Dr. A.P.J. Abdul Kalam Technical University, Lucknow ,Uttar Pradesh, India
Kuldeep Sahay
Professor & Head, Dept. of EE, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, India

Doubly Fed Induction Generator (DFIG), Wind Energy Conversion System (WECS), Stator Voltage Oriented Control (SVOC), Grid Side Converter (GSC), Rotor Side Converter (RSC).

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Publication Details

Published in : Volume 3 | Issue 6 | September-October 2017
Date of Publication : 2017-10-31
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 813-819
Manuscript Number : IJSRSET1736214
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

V. K. Chaudhary, Kuldeep Sahay, " Behavior of DFIG Based Wind Energy Conversion System Due to Short Circuit of DC-Link Capacitor, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 3, Issue 6, pp.813-819, September-October-2017.
Journal URL : http://ijsrset.com/IJSRSET1736214

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