Mass and Aerodynamic Imbalance Estimates of Wind Turbines

Energies

Jenny Niebsch²  Ronny Ramlau¹ 

[1] Institute for Industrial Mathematics, Johannes Kepler University, Altenbergerstr. 69, 4040 Linz, Austria; E-Mail:;Johann Radon Institute, Austrian Academy of Science, Altenbergerstr. 69, 4040 Linz, Austria

关键词: wind turbine;    mass imbalance;    aerodynamic imbalance;    inverse problem;   

DOI  :  10.3390/en3040696

来源: mdpi

【 摘 要 】

Due to its effect on the operation time of wind turbines, rotor imbalances of a wind turbine have to be detected early enough. We present a method that determines inhomogeneous mass distributions of the rotor as well as deviations in the pitch angles of the rotor blades from vibrational data only. To this end, a mathematical model connecting the load caused by the imbalances to the resulting vibrations was developed. After discretization, the resulting vibration equation was solved analytically. The inverse problem, i.e., the calculation of the mass and aerodynamic imbalance from vibrational data, was solved by using nonlinear regularization theory. Numerical simulations were performed using artificial vibration data.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.