Maxwell V13 Highlights

© 2009 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary© 2009 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary

Maxwell V13.0Release

Marius Rosu PhDEM Product Manager

© 2009 ANSYS, Inc. All rights reserved. 2 ANSYS, Inc. Proprietary

Maxwell V13.0 Release

New CapabilitiesPerformanceProductivityANSYS Workbench


New Capabilities



Maxwell V13.0New Adaptive Mesh Refinement for the 3D Eddy

The adaptive mesh refinement is addressing both large energy error domains and domains with large eddy currents within the entire model space

Mesh with larger energy errors

Mesh with larger eddy currents

2S

2112 S ofpart S ofpart S include refined be Mesh to ++

1S

Entire domain space

12S


5

With eddy effects

Without eddy effects

With eddy effects

Without eddy effects


Automatically detects- when and,- where to refine


6

Old adaptive refinement

New adaptive refinement



Maxwell V13.03D-Transient Cosimulation with Simplorer

Example: Axial-Disk PM Motor Control

Current Control Loop

Position Control Loop


Maxwell V13.03D-Transient Cosimulation with Simplorer

Magnetic Flux Density

Axial Motor – Speed & Torque Profile

3ph Line Current Profile

Flux

Lin

kage

Pro

file


Maxwell V13.0 Expand Demagnetization to 3rd Quadrant

• Expand the existing algorithm to the 3rd

quadrant for demagcomputation

• Base on the actual user-input B-H curve in the 3rd

quadrant

Only Maxwell 3D

B

H0

Load line without other sources

Demagnetization point

Hc afterdemagnetization

Load line with other sources

Initial Br

Br after demag


Maxwell V13.0 Add Magnetization Capability

B

H0

• Based on the original non-remanent B-H curve

• Construct line b at the operating point p, which is parallel to the line a

• Br is the intersection of line b with B-axis

• Element by element

Br Line b

Line a

p

Only Maxwell 3D


Maxwell V13.0Functional Magnetization Direction

• Allow unit vector for magnetization direction to be functional

Only Maxwell 3D


Maxwell V13.0Transient Solid Winding Source with More Than 2 Terminals

In 3D transient, add time varying solid winding source with more than 2 terminals

i1

i2

i3


• Allow charge, volume charge density as an initial condition

• Support insulator, instead of applying conductor with small conductivity

Maxwell V13.0Electric Transient Solver


Maxwell V13.0 Continue Transient Solution

• Allow user to clean stop an in-progress transient simulation and modify in a linked design:– Material Properties– Excitation Conditions (including the external circuit)– Mechanical Setup– Solution Setup


Shaded-Pole Topology

Maxwell V13.0New UDP Components

Core Topology


Radius

Start Width

Start Width

End Width

HeightStart Width

End Width

Arbitrary combination of 8 elements

Slot Editor

Radius

Start Width

Radius

Start Width

Symmetric orasymmetric

slots

Extension of current 6 slot types

RMxprt V13.0New Slot Editor


Maxwell Design Creation: • 2D geometry creation by scripts• 3D geometry creation by scripts

For All Machine Types: • Magnetic circuit solution for teeth• Slot leakage inductance computation

Support Edited Slot Type in

RMxprt Solvers

RMxprt V13.0Solver Support of New Slot Type


Double-Fed Induction Generators (DFIG): • Variable frequency excitations• Maximum power point tracking (MPPT)

Universal Operating Modes: • Motors• Generators (wind-power generators)

New Machine Type:Wound Rotor

Induction Machine

RMxprt V13.0New Machine Type


Maxwell V13.0New Modeler Capabilities

• Fillets and Chamfers are now available in the modeler for Maxwell 2D and on 2D objects in the Maxwell 3D modeler

• For line objects, one can now assign a cross section to a line and automatically create a 2D or 3D object from a line

• For closed polylines (or sheets) one can move an edge along its normal. This is useful for parameterization of 2D objects

• One can now remove commands from anywhere in an object’s history tree

• One now has the option to keep objects that become unclassified after a ‘split’ operation in the modeler. This is useful in combination with the option to ignore unclassified objects when validating the model and with parametric sweeps in which an object is ‘removed’ by a split in some variations but not others


Maxwell V13.0New Modeler Capabilities

• One can now ‘select by area’ by dragging a box over a portion of the model window

• One can also setup a select by area filter to select only certain types of objects, or objects with certain materials, or certain names

• One can now use ‘select by variable’ to find all geometry that depends on a particular variable

• There are new ‘Imprint’ and ‘Imprint Projection’ commands that allow to imprint a line or sheet object (or the projection of those objects) onto the surface of a 3D object

• Clip plane to allow interactive cut-away view through arbitrary plane

• Project Preview – Image and Notes available in File Open• The measure command can now give the total length of a

selected polyline object


Performance



Maxwell V13.0Speed Up 3D Transient

• Speed up x5• Better nonlinear iteration algorithm• Enhanced volume mesher (reducing total

number of nonlinear iterations)• Introduce damping scheme to update

permeability for certain elements• Support iterative solver option (PCG)• Improve memory management


• High meshing success rate• Higher mesh quality• Effective on imported geometries• Matching boundary more robust• Fewer total elements• Smoother and more uniform element transition• Automatically healing and repair

Maxwell V13.0Enhanced Volume Mesher (TAU)

Maxwell V12.2Maxwell V13.0


Maxwell V13.0Speed Up 3D Magnetic Transient

Study has been performed on DELL Dual Processors, 3GHz, 8GB RAM WXP 64-bit OS

Induction Motor86:45 vs. 22:58 (Maxwell13.0)

Magnetic Actuator75:49 vs. 14:57 (Maxwell13.0)


Maxwell V13.0Speed Up 3D Magnetic Transient

Axial-Disk Motor107:00 vs. 25:17 (Maxwell13.0)

BLDC Motor35:34 vs. 9:28 (Maxwell13.0)

Study has been performed on DELL Dual Processors, 3GHz, 8GB RAM WXP 64-bit OS


Maxwell V13.0Higher Capacity Solver Capabilities

• Significant memory saving • Allow to solve large problem• Develop good pre-conditioners to get efficient speed performance

64 bits machine (2.83 GHz,16.0 GB of RAM)

Example: Team Workshop Problem #8

Mesh (volume, adaptive) 00:19:26 00:19:26 2.9 G 3665594 tetrahedraIterative Solver 02:44:37 02:44:19 13.5 G 5308396 matrixAdapt 01:43:22 01:43:19 13.5 G 3665594 tetrahedra

Residual tolerance 0.00001

Eddy-Current Problem

PCG Iterative Solver


……

Maxwell V13.0Performance – HPC

• New Remote Simulation Manager – Simple configuration of distributed networks– Improved scalability over many nodes– Scheduler integration: LSF, Microsoft HPC, etc

• Reduction of bottlenecks for projects with many parametric variations

• Reliability and robustness• Distributed frequency sweeps for 2D and 3D eddy

solutions


Maxwell V13.0Enhanced Matching Boundary Capabilities

• Automatically connect two parts of a winding separated by matching boundary

• Much easier for winding setup

Automatically identify 3D coil terminal counterparts and connect them together


Productivity



RMxprt V13.0Integrated Motor Solution

• RMxprt automatically creates complete Maxwell 2D and Maxwell 3D designs– Geometry and minimum solving region creation with matching

boundary setup – Motion and mechanical setup– Material property and core loss setup – Winding and source setup including drive circuit

• Use enhanced mesher to generate 2D and 3D uniform mesh with high quality and reasonable size

• Fast 3D transient solver• Direct output of most useful engineering quantities,

including force/torque, core loss, current, flux linkage, induced voltage, speed, position, etc


Material Setup with Magnet and Lamination

Directions in Local Coordinate Systems

Geometry Creation with Auto-Selection of End

Connection Type

Minimized Matching Boundary and Axial Symmetric Boundary

Complete Excitation Setup (Include

Coupling Circuit Setup)

CompleteMaxwell

2D/3D Design Setup

RMxprt V13.0Integrated Motor Solution


Maxwell V13.0Postprocessing

• The user can now create post processing variables and generate reports that sweep these variable values without requiring new solutions

• Improved unit handling for values calculated in the fields postprocessor

• The user can now set the units for display on field overlays

• New “Streamline” plots can be created for vector field plots


ANSYS Workbench



Maxwell V13.0ANSYS Workbench

• Two-way thermal coupling between Maxwell3D and ANSYS Mechanical with temperature dependent materials in Maxwell

• Thermal coupling from Maxwell to ANSYS Mechanical now also includes the losses from impedance boundaries in 3D

• One-way stress coupling between Maxwell3D and ANSYS Mechanical including only the volumetric force densities transfer from Maxwell

• Temperature plots are available in Maxwell to support 2-way coupling

• The average loss density can be plotted in Maxwell transient• The average loss density can be plotted in Maxwell 3D eddy• Maxwell supports integration with Design Exploration


Maxwell V13.0 Coupling with ANSYS R12.1– Includes Thermal and Structural solutions

Maxwell V13.0ANSYS Multiphysics

Mapping Electromagnetic Force

Mapping Power Loss Thermal-Structural


Maxwell V13.0Design Exploration

P2 - parallel

P1 - cond

Workbench Schematic

Maxwell Project


Maxwell V13.0Design Exploration - Design of Experiments


Maxwell V13.0Design Exploration – Response Surface


Maxwell V13.0Design Exploration – Six Sigma


yp

- New Modeler Capabilities

- Speed Up 3D Transient

- Better nonlinear iteration algorithm

- Enhanced volume mesher (reducing total number

of nonlinear iterations)

- Introduce damping scheme to update

permeability for certain elements

- Support iterative solver option (PCG)

- Improve memory management

- New Remote Simulation Manager

- Simple configuration of distributed networks

- Improved scalability over many nodes

- Scheduler integration: LSF, Microsoft

HPC, etc

- Reduction of bottlenecks for projects with many

parametric variations

- Reliability and robustness

- Distributed frequency sweeps for 2D and 3D eddy

- Enhanced Matching Boundary Capabilities


Documents

Maxwell V13 Highlights