歐洲風(fēng)能技術(shù)論文68_hardware-in-the-loop_development_and_testing_of_new(編輯修改稿)
2025-01-04 10:23 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 deflection due to a constant line load (blade) or constant tower top force EWEC 2022, Athens Martin Geyler 10 Load torque reference values for load drives will include the following effects: Example simulation for pitch load situation in turbulent wind conditions RealTime Simulation: Pitch System Model pitch gear ratio 1:1000 tooth clearance at fast side of pitch gears blade bearing friction DRE/CONformula for large bearings: MR = 181。D/2 * k * M blade root Four point contact bearings: 181。D = , k = Components for axial and radial force have been neglected. changing inertia due to blade deflection inherently included by mechanical model EWEC 2022, Athens Martin Geyler 11 RealTime Simulation: Aerodynamic Model (1) Blade Element Momentum Theory (BEM) 12 blade elements per blade semiempirical corrections: stateoftheart implementation of dynamic inflow yawed inflow dynamic stall total 240 aerodynamic states Solver: simple ForwardEuler integration at 1ms time step calculation time ca. 45 181。s on Athlon 4000+ PC EWEC 2022, Athens Martin Geyler 12 Dynamic Inflow Model (ECN): Local inflow condition at blade sections depend on free wind speed and load situation of the rotor in a dynamic manner. Example: Overshoot in blade root bending moment for fast step on pitch angle Simulation Tjaereb Experiment RealTime Simul
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1