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Published in:

Volume 4 Issue 11
November-2017
eISSN: 2349-5162

Unique Identifier

JETIR1711017

Page Number

96-104

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Title

ENHANCEMENT OF OPEN CIRCUIT FAULT IN OUTER SWITCHES OF THREE LEVEL RECTIFIERS IN WIND TURBINE SYSTEMS USING FAULT TOLERANT CONTROL METHOD

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Abstract

In the wind generation system, the variable-speed generation system is more attractive than the fixed-speed system because of the improvement in wind energy production and the reduction of the flicker problem by the variable-speed generation. The proposed method can not only detect the fault condition but also identify the location of the faulty switch. In the proposed method, this is designed by incorporating a simple switching control in the conventional method. By using the closed-loop control systems, an analysis of the system discloses that it is possible for signal energy to traverse different paths and to be modified in a different manner in these various paths without using additional sensors or performing complex calculations. The reasons for using multiple-loop systems are many that is Improved linearization, noise reduction, and change in impedance level can be achieved by using auxiliary loops. It is also possible to synthesize certain transfer functions by using additional feed-back paths. For the fault detection of the NPC-type rectifier, the fault detection method which uses a dc-link voltage with a grid angle is proposed. The proposed tolerant Control maintains normal operation with sinusoidal currents under the open-circuit fault of outer switches by adding a compensation value to the reference voltages. Three-level topologies are widely used in back-to-back converters of wind turbine generation systems. Simulations and experiments are carried out to confirm the reliability of the proposed fault-detection method.

Key Words

Neutral-point-clamped rectifier, open-circuit fault, open-switch fault, reliability, three-level topology, tolerant control, T-type rectifier.

Cite This Article

"ENHANCEMENT OF OPEN CIRCUIT FAULT IN OUTER SWITCHES OF THREE LEVEL RECTIFIERS IN WIND TURBINE SYSTEMS USING FAULT TOLERANT CONTROL METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 11, page no. pp96-104, November-2017, Available at : www.jetir.org & http://www.jetir.org/JETIR1711017

Publication Details

Published Paper ID: JETIR1711017
Registration ID: 170836
Published In: Volume 4 | Issue 11 | Year November-2017
DOI (Digital Object Identifier):
Page No: 96-104
ISSN Number: 2349-5162

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(Volume 4 | Issue 11 | November 2017 |Impact factor 5.87)

Call For Paper | Volume 4 | Issue 11 | Impact factor 5.87


Important Dates Related to Publication Procedure:
  • » Paper Submission Till: 29 November 2017.
  • » UGC and ISSN Approved Journal
  • » Review (Acceptance/Rejection) Notification: Within 02-04 Days.
  • » Paper Publish:Within 02-07 Days after submitting the all documents.
  • » Frequency: Monthly (12 issue Annually)
  • » Journal Type : Open Access
  • » Publication Charges : 1300 INR
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