Abstract
AbstractThe electromagnetic space–time coupling load caused by the gas film thickness is used as an indication of monitoring the wind turbine health. However, due to the influence of wind speed, magnetic field parameters, shape error and other factors, the electromagnetic load of wind turbine has a space–time coupling load which is related to space position and time, and the amplitude changes continuously with the advance of time. The space–time coupling load needs to be expressed with the variables of both time dimension and spatial dimension. According to the sameness of the form between the modal loads and the actual time history by modal analysis, a novel inverse approach combining the conventional concentrated dynamic loads identification method with the Chebyshev orthogonal polynomial fitting technique is presented to reconstruct the electromagnetic space–time coupling load, this approach enables one to identify the time history and reconstruct the spatial distribution function separately through limited measurement information in time domain. The recognition results demonstrate the validity and accuracy of the proposed method.KeywordsWind turbineElectromagnetic space–time Coupling loadLoad identificationChebyshev orthogonal polynomials
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
