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

Authors

  • 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

Keywords:

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

Abstract

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.

References

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2017-10-31

Issue

Volume 3, Issue 6, September-October-2017

Section

Research Articles

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
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.