Motion SetupMotion Setup– Time varying magnetic fields solved by the Transient solver can also result frommoving excitations or permanent magnets– Maxwell allows users to define motion types as translation, rotation, or noncylindrical rotationRequirements for Motion Setup– All moving objects should be physically separated from stationary objects– Moving object should be enclosed by a so-called Band object which separatesmoving parts and stationary part of the geometry In 3D, it is recommended to use a segmented object (Regular Polyhedra) as aBand– Motion Should not result in intersection or overlap between moving andstationary objectsBandRotational MotionTranslational Motion 2013 ANSYS, Inc.May 21, 20137Release 14.5 Boundary ConditionsAssigning Boundary Conditions in 3D– Boundary conditions define behavior of the magnetic field at the interfaces orthe edges of the problem region– A boundary can be assigned to a face (or Edge in 2D) from menu item Maxwell3D Boundaries Assign and select the required boundary assignmentBoundary Types– Following Boundary types are available for Transient SolversMaxwell 3D: Default: Natural or Neumann Zero Tangential H-Field Insulating Symmetry Master/SlaveMaxwell 2D: Vector Potential Balloon Symmetry Master/Slave– The behavior of each boundary remains the same as discussed withMagnetostatic Solver 2013 ANSYS, Inc.May 21, 20136Release 14.5ĭ. Direction specified is with respect to Orientation CS ofbodies to which material is assignedCore Loss Type Can be Electrical Steel, Power Ferrite, or None Allows you to define Core Loss coefficients as discussedwith Eddy Current SolverComposition : Can be Solid or Lamination Setting Composition to Lamination creates an anisotropicmagnetization effect. Can be Simple or AnisotropicMagnetic Coercivity: Defines permanent magnetization of magnetic materials Requires magnitude and direction specification. Relative Permeability, µr can be Simple or nonlinear and/or AnisotropicBulk Conductivity: Used in determining the current distribution in current carrying conductors and induced eddycurrents from resulting magnetic field. Material DefinitionTransient Material Properties– In Transient simulation, the following parameters may be defined for a material:Relative Permeability : Relative Permeability plays a large role in determining the magnetic field solution. Defining a Magnetic Transient ProblemDefining Magnetic Transient Solver– Specify the Maxwell Magnetic Transient Solver by selecting the menu itemMaxwell 2D/3D Solution Type– In the Solution Type window, select Magnetic Transient and press OKMaxwell 3D 2013 ANSYS, Inc.May 21, 2013Maxwell 2D4Release 14.5ī.
Mesh Operations are discussed in Lecture 6Magnetic Transient Equations– Following equations are solved with Transient solver 1 H B 0 t B 0 v A J s A V H c V A t ( ) 0 t Maxwell 2DMaxwell 3D 2013 ANSYS, Inc.May 21, 20133Release 14.5Ī. Magnetic Transient SolverMagnetic Transient Solver:– The Magnetic Transient Solver computes time varying magnetic fields– This is a time domain solver and solves for instantaneous magnetic fields at eachtime step– The source of the Time varying magnetic field can be: Arbitrary time-varying voltage or current sources Moving Sources Moving permanent magnets– Field Quantities can also be strongly coupled with circuit equations to allowarbitrarily defined external circuits– Magnetic Transient solver does not use Adaptive mesh refinement and thusmesh operations or a Linked Mesh is required to be defined to obtain asufficient mesh. Selecting the Electric Transient Solverb.
Magnetic Transient Solvera.b.c.d.e.f.g.h.i.Selecting the Magnetic Transient SolverMaterial DefinitionBoundary ConditionsMotion SetupExcitationsParametersDesign SettingsAnalysis SetupSolution ProcessB.
ANSYS MAXWELL V 16 MANUAL MANUAL
Lecture 5:Maxwell Transient SolversANSYS Maxwell V16Training Manual 2013 ANSYS, Inc.May 21, 20131Release 14.5ĬontentA.