This is especially true when a three-phase generator is used in single-phase operation, and when a motor operates during start-up and braking.This minimizes local saturation, provides sufficient space to insert stator and rotor coils, and improves overall manufacturability.Magnetostatic features in QuickField help analyze demagnetization characteristics, torque constants of dc motors, and steel saturation at no load and full load.
Ac Motor Winding Software Generator Is UsedAc Motor Winding Software Software Allows ExaminingAlthough 3D software allows examining more complex models, doing so is not feasible when there is only a day or two to analyze electromagnetic and thermal performance. Discussing techniques for solving a range of design problems highlights a few notable features in the software. For instance, Label Mover assists with parametric analysis of any model created in the software. Parameterized geometry and material libraries are useful when running multiple analyses in the search for higher motor efficiencies. QuickField works well at this task by letting users parameterize almost everything, including geometry, boundary conditions, and loads. It also works after analysis when users see characteristics with several values that need examining. When investigations focus on time-domain phenomena, transient electromagnetic analysis can be done as well. The optimization solves easily after applying armature and field currents, boundary conditions, and magnetic properties of the motor components. Real challenges show up while modeling the influence of interpoles on commutations, which rely on a properly described current function in the commutating armature coils. This modeling task applies to medium and large dc motors (more than 100 kW) for industrial and traction drives. QuickField also models conventional dc motors, those excited with a stationary field, and reversed brushless dc motors, those with magnets on the rotor. It requires a transient electromagnetic solver with a time-domain postprocessor to study torque characteristics such as the effect of magnetic flux harmonics on cogging torque. Ordinarily, eddy currents are low in the rotor core and underneath the magnets, and analysis can be done using magnetostatic FEA with gradual current change in each stator phase. To calculate output power at a given rotor current, users can solve the inverse problem by calculating torque for a synchronous motor at a preliminary estimated rotor current and load angle (rotor position). And to optimize the lamination layout, find the steel saturation and output torque. Such simulations also let users predict the number of rotor amp-turns required to meet a specified output power. Coupling heat with electromagnetics verifies that rotor and stator-winding temperatures are below the maximum allowed insulation temperature. Heat-source coupling is usually done by transferring Joule and iron losses to the heat-transfer model. The task requires running transient electromagnetic FEA due to the eddy-current nature of the motor-starting currents and their damping effect on stator-winding harmonics. Coupling heat-transfer and mechanical-stress analyses would also be necessary to evaluate amortisseur-winding strength.
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