歐洲風(fēng)能技術(shù)論文68_hardware-in-the-loop_development_and_testing_of_new-文庫吧
2024-11-23 10:23 本頁面
【正文】 n Geyler 7 Block structure of Simulink model RealTime Simulation: Overall Wind Turbine Model EWEC 2022, Athens Martin Geyler 8 14 rigid bodies connected by joints: (1) Universal joints with torsional stiffness and damping representing flexibility of the structure (2) Revolute joints with external torque input representing actuators Mechanical model RealTime Simulation: Mechanical Model (1) fully recursive algorithm: ?Method of Articulated Inertia“: treelike structure is exploited avoids need for inverting large mass matrices O(N) method: putational effort increases linearly with number of DOF Mass forces (gravity, inertia) inherently included by the algorithm. Solver: 3rdorder RungeKutta solver at 1ms time step ca. 450 181。s calculation time on Athlon 4000+ PC Multibody approach: EWEC 2022, Athens Martin Geyler 9 Mechanical model RealTime Simulation: Mechanical Model (2) Parameters for multi body model were calculated using a optimisation algorithm to find a best fit to a given finite elements (FE) model: 1st mode and static deflection of simplified blade model with 2 rigid sections。 Comparison with FE model 1. Step: Optimisation of joint locations in order to allow for best representation of first 3 mode shapes 2. Step: Optimisation of stiffness parameters and joint twist angles in order to fit eigen frequencies and mode shapes Validation: Comparison of static
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