fe研發(fā)培訓(xùn),設(shè)計(jì)培訓(xùn)-文庫(kù)吧在線文庫(kù)
【正文】 le of the NewtonRaphson method is to iteratively reduce this residual until it is sufficiently small (ideally zero). Processing? The mercial software packages MagNet by Infolytica of Canada and MagSoft by Cedret of France are used by RD for electromagic FEA.? A parametric modeling technique has been recently developed to automatically model synchronous machines by using MagNet.? An example of the application for 4 poles 8500 HP motor 2511DA is used for illustration. Software ? There are four modules for creation of a FE model parametrically. Stator (model stator core, air ) Rotor (model rotor pole, spider and field coil) Model (create model including all ponents) Phase SET (create stator winding connection) Parametric Modeling ? The stator model has four buttons. After the parameters are entered, each button can be activated to plete the model. The scale is the number of poles to be modeled.? The four buttons are Build Stator Core Build Stator Winding Build Air Build Stator Stator Model Stator Model ? The rotor model has six buttons. After the parameters are entered, each button can be activated to plete the model. ? The buttons are Build Field Pole Build Air Gap Build Shaft Build Damper Bars Build Coil Rotor Model Phase Set Model Mesh Air Gap Mesh (Closeup) ? 2D FE models solve for field distribution over a machine crosssection by neglecting all fringing and end effects, called 3D effects.? Since 3D modeling requires considerable puter programming and CPU time, it is not yet practical to solve rotating machine transient problems in 3D.? To improve correlation with test results, it is essential to include the 3D effects. 3D Effects Modeling ? 3D effects include stacking of core laminations, ventilation air ducts fringing flux and pole and stator end leakage flux.? Some methods to include
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1