Current signature analysis to monitor DFIG wind turbine generators: A case study

As wind energy continues to develop with increasing wind turbine power capacities often deployed o shore, reducing operation and maintenance costs have become a critical aspect. Condition monitoring has been found to be the key to achieve this goal. Under this framework, the induction generator of a...

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Bibliographic Details
Authors: Artigao Andicobery, Estefanía, Honrubia Escribano, Andrés, Gómez Lázaro, Emilio
Format: article
Publication Date:2017
Country:España
Institution:Universidad de Castilla-La Mancha
Repository:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/14892
Online Access:http://dx.doi.org/10.1016/j.renene.2017.06.016
http://hdl.handle.net/10578/14892
Access Level:Open access
Keyword:Doubly-fed induction generator
Current signature analysis
Condition monitoring
Wind turbines
Description
Summary:As wind energy continues to develop with increasing wind turbine power capacities often deployed o shore, reducing operation and maintenance costs have become a critical aspect. Condition monitoring has been found to be the key to achieve this goal. Under this framework, the induction generator of a wind turbine is a major contributor to failure rates and downtime where doublyfed induction generators are the dominant technology employed. This paper presents a spectral analysis of a real doubly-fed induction generator of an inservice wind turbine. A one-year measurement campaign on an operating wind turbine has been used to perform the study. Three test cases representing different wind turbine operating conditions are presented to illustrate the results. All the peaks found in the spectra have been identified, and the frequency components related to electrical rotor unbalance have been found. The results show which components are more suitable for effective condition monitoring.