Open AccessHydraulic Pitch Control Delay Estimation and Compensation Method for Large Wind Turbine
Author(s) -
Xiangming Wang,
Jiahui Pan
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/571/1/012056
Subject(s) - control theory (sociology) , turbine , pitch control , pitch angle , estimator , computer science , control system , compensation (psychology) , control (management) , engineering , mathematics , physics , mechanical engineering , psychology , statistics , electrical engineering , artificial intelligence , geophysics , psychoanalysis
At present, using hydraulic pitch control for large wind turbines is becoming a trend. However, there will be a delay in the process of hydraulic pitch control, which will affect the stability of the system. In view of the influence caused by the delay in the wind turbine system, this paper designs a delay estimator and compensator using the Assumed Mode method, which linearizes the perturbation generated in the process of hydraulic pitch control and calculates the parameters with the method of function fitting, so as to overcome the adverse effect caused by the delay of hydraulic pitch control. At the same time, a pitch control system based on fuzzy control is designed to form a closed-loop control system. The parameters of 3MW wind turbine are taken as an example for simulation, the results show that this method can accurately estimate the delay generated in the process of pitch control, and can still well compensate the delay caused by the system under the condition of regulating pitch angle.