TY - JOUR A2 - Kishor, Nand AU - Heidari, Mohammad PY - 2016 DA - 2016/10/19 TI - Gearbox Fault Diagnosis of Wind Turbine by KA and DRT SP - 9451631 VL - 2016 AB - The spectral kurtosis analysis (KA) is used to select the filter parameters (FPs) combined with the application of the demodulation resonance technique (DRT) for a gearbox fault diagnosis (FD) of wind turbine. Based on the proposed method, the FPs can be selected automatically according to the kurtosis maximization principle. By changing of the shaft speed under the variable loads conditions, the natural frequency (NF) of the gearbox will be shifted and will affect the accuracy of the detection of the faults. So, the effect of the external loads on the NF of the gearbox is examined based on the simulation of the gearbox. In addition, the fast kurtogram (FK) combined with the demodulated resonance technology is used to process the simulated faulty signal of a gearbox. The results show that the FD of the gearbox is modified by correcting the NF shifts due to the variation of the operating loads. SN - 2356-735X UR - https://doi.org/10.1155/2016/9451631 DO - 10.1155/2016/9451631 JF - Journal of Energy PB - Hindawi Publishing Corporation KW - ER -