LF Electromagnetics 14.0 UpdaUpda etes - Ansys...SIwave and HFSS Flow 1 Export an equivalent circuit...

LF Electromagnetics14.0 Updates0 Upda es

Marius Rosu, PhDEM Lead Product Manager

© 2011 ANSYS, Inc. August 25, 20111

Vincent DelafosseEM Senior Product Manager

SimplorerR14 HighlightsSimplorer

• Co‐simulation with RBD

• Push‐Back excitations for EMI/EMC (to SIwave and HFSS)

• Co‐simulation with Fluent (Beta feature)

• Improvements in IGBT characterization tool

Maxwell

• Parallelization of Maxwell 3D non‐transient solvers

• 2‐way thermal link with Fluent (Beta feature)

• Deformed mesh support for 2‐way stress link

• Nonlinear permanent magnets characteristic temperature dependency

• 3D Edd hi h d l t• 3D‐Eddy high order elements

• Nonlinear anisotropic and lamination material in Maxwell2D

• 64‐bit UI

Q3DQ3D

• Magnetic materials capability

RMxprt

• Axial flux permanent magnet machine


• Axial‐flux permanent magnet machine

• Interior permanent magnet machine [set‐up for M2D/3D only]

• Solid‐rotor induction motor [set‐up for M2D/3D only]

IntroductionIntroduction‐

Electromechanical PerspectiveElectromechanical Perspective


Introduction: Electromechanical Perspective

ANSYS has a comprehensive portfolio of simulation packages. Our goal is to provide tools that enable Electric Engineers to solve their problems in theprovide tools that enable Electric Engineers to solve their problems in the most efficient way

ANSYS focus:

‐ Developing cutting‐edge technology solving real world problems faster

‐ Enabling couplings between 3D physics solvers where it is relevant

L i th hi h fid lit f 3D i l ti i t th “0D” t‐ Leveraging the high‐fidelity of 3D simulations into the “0D” system simulation design


Maxwell Design Flow – Field Coupling

ANSYS CFDFluent

RMxprtMotor Design

2 /3

g

Maxwell 2-D/3-DElectromagnetic ComponentsHFSS

PExprtANSYS

MechanicalThermal/Stress

pMagnetics


Field Solution

Model Generation

Simplorer Design Flow – System Coupling

SimplorerSystem Design

ANSYS CFD Icepack/Fluent RMxprt

M t D i

PP := 6

ICA:

A

A

A

GAIN

A

A

A

GAIN

A

JPMSYNCIA

IB

IC

Torque JPMSYNCIA

IB

IC

TorqueD2D

Motor Design

HFSS, Q3D, SIwave

PExprtp tMagnetics

Maxwell 2-D/3-DElectromagnetic Components

ANSYS MechanicalThermal/Stress

Model order Reduction


Co-simulation

Push-Back Excitation

SimplorerSimplorer

Multi‐Domain Circuit and System Simulation Package


Cosimulation with Rigid Body DynamicLanding Gear ApplicationLanding Gear Application

Hydraulic Circuit

Piston Position


Simplorer‐Fluent Cosimulation

Typical Application: Battery Cooling

Transient co‐simulation for non‐linear CFD models

Typical Application: Battery Cooling

Design Flow:

– Fluent User• Creates Fluent design

• Creates Boundary Conditions (defining Parameters) for cosimulation interface

– Simplorer User• Uses UI to connect to Fluent design: Schematic component and Pins are created automatically

• Wires up the rest of the schematic

• Sets up the Transient Analysis and Simulates

– Cosimulation is OS independent

– Cosimulation may use local machine or run over the network

© 2011 ANSYS, Inc. August 25, 201110

y

– Simulation results available in both Simplorer and Fluent

Cosimulation Example: Battery Cooling

Single battery cell

Inputs: Inlet Flow Rate (Kg/s) and Heat Source(W/m3)

Output: Outlet Temperature (K)

InletBattery Element

Outlet

y(HeatSource)

Outlet

© 2011 ANSYS, Inc. August 25, 201111

Simulation Results: No Control

Flow Rate

Heat SourceTemperature Change

@250 Sec @1200 Sec

0.01 400k 37.9155 64.8926

800k (double) 75.8207 129.787

0.02 400k 29.7525 39.201

800k (double) 59.4059 78.402

© 2011 ANSYS, Inc. August 25, 201112

Results verified with Fluent aloneNon‐linear dependency on Flow Rate

Simulation Results: Linear Controls

© 2011 ANSYS, Inc. August 25, 201113

Simulation Results: Non‐linear Control

Fluent Control Co‐Simulation

© 2011 ANSYS, Inc. August 25, 201114

IGBT Characterization

• Accurate models of the semiconductorsare needed to achieve a good circuitare needed to achieve a good circuit simulation

• Simplorer offers a parameterization toolfor IGBTsfor IGBTs

• The user can import the data from the datasheet and created an accurate IGBT modelmodel

2500.00

3000.00

10.00

15.00

40.00

50.00Ansoft Corporation Simplorer1switch_on

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3000.00

10.00

15.00

40.00

50.00Ansoft Corporation Simplorer1switch_on

1000.00

1500.00

2000.00

U1.

VC

E

-5.00

0.00

5.00

VM

2.V

[V]

10.00

20.00

30.00

R2.

I [A

]

Curve InfoU1.VCE

TR

1000.00

1500.00

2000.00

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VC

E

-5.00

0.00

5.00

VM

2.V

[V]

10.00

20.00

30.00

R2.

I [A

]

Curve InfoU1.VCE

TR

© 2011 ANSYS, Inc. August 25, 201115

499.90 499.95 500.00 500.05 500.10 500.15 500.20 500.25 500.30Time [us]

0.00

500.00

-15.00

-10.00

-10.00

0.00VM2.V

TRR2.I

TR

499.90 499.95 500.00 500.05 500.10 500.15 500.20 500.25 500.30Time [us]

0.00

500.00

-15.00

-10.00

-10.00

0.00VM2.V

TRR2.I

TR

IGBT Characterization Improvements

It is possible to customize test circuits in the characterization tool:Every Manufacturer uses different measurement Criteria on their datasheetsEvery Manufacturer uses different measurement Criteria on their datasheets

More optimization and extraction settings have been added

© 2011 ANSYS, Inc. August 25, 201116

Push‐Back Excitation for EMC/EMI

Push excitations to SIwave and HFSS: Allows feedback of transient simulation results in form of excitations for 3D FEAresults in form of excitations for 3D FEA

State Space Model

Excitation data

© 2011 ANSYS, Inc. August 25, 201117

Radiated Fields can now be calculated based on actual conductive mode analysisBoth conductive and radiative analysis EMC/EMI can be performed

SIwave and HFSS Flow

1 Export an equivalent circuit model for the SIwave design as a Simplorer SML netlist

2 Import the SML netlist as a s b circ it2 Import the SML netlist as a sub circuit

• Perform a transient analysis

• Right click to push excitation UI.

3 UI converts time domain signal to frequency domain3 UI converts time domain signal to frequency domain

• Excitation files get writtenExcitation files get written– Voltage and current for each

frequency and port• Import files back to SIwave

l

© 2011 ANSYS, Inc. August 25, 201118

– External source excitations

MaxwellMaxwell

2D/3D Finite Element Low Frequency Electromagnetics/ q y g

© 2011 ANSYS, Inc. August 25, 201119

Full Parallelization of 3D non‐transient solvers

Magnetostatic solver:bl– Matrix Assembly

– Energy computation for post processing in field solver

Eddy current solver:– Energy computation for post processing in field solver

– Power loss and stress computation for post processing

© 2011 ANSYS, Inc. August 25, 201120

Full Parallelization of 3D non‐transient solvers

OpenMP is used to speed up the field solver using different cores sharing same memory

64‐bit XP @ 2.67 GHz 12GB of RAM

3D Magnetostatic Problem‐ Adaptive Analysis with 6 iterative steps (energy error = 0.03%)‐ 606,758 tetrahedra

150

Real Time Computation

‐ 817,274 matrix

100

150

[min.]

50

Time [

© 2011 ANSYS, Inc. August 25, 201121

0

1‐CPU 2‐CPU 4‐CPU 6‐CPU 8‐CPU

3D Eddy Current High Order Elements

Goal: Improve accuracy for current density field (J)

‐ J field is derived quantity from T‐Ω formulationJ field is derived quantity from T Ω formulation

‐ Higher order elements gives first order approximation for currents

© 2011 ANSYS, Inc. August 25, 201122

First order approximation for currents

Zero order approximation for currents

3D Eddy Current High Order Elements

C ilCoil

Mesh on the plate

Plate

© 2011 ANSYS, Inc. August 25, 201123

Induced eddy current Zero order vector shape functions

Induced eddy currentFirst order vector shape functions

Core Loss in Eddy‐Current Solver

Steel and Power Ferrite Core loss available

Core loss evaluation in linear mode without a transient analysis

Typical Application: Ferrite Electronic Transformer

© 2011 ANSYS, Inc. August 25, 201124

Core Loss in Eddy‐Current Solver

Enter Core Loss coefficient as in Transient

Disable Eddy Current calculation as Core Loss contains Eddy Loss

© 2011 ANSYS, Inc. August 25, 201125Ferrite Core

Core loss in Eddy‐Current Solver

Maxwell 3D results: 0.85 W

Formula used:

Validation with hand calculation:

• Core volume = 1.29e‐6 [m^3], frequency= 100KHz

• B ~ 0.2 Tesla

• L 1 29 6 * 11 * (100 000)^1 3 * (0 2)^2 5 0 8 W• Loss = 1.29e‐6 * 11 * (100,000)^1.3 * (0.2)^2.5 = 0.8 W

The core‐loss can be numerically validated using the 3D magnetic transient solver

© 2011 ANSYS, Inc. August 25, 201126

y g gemploying linear BH characteristic

Maxwell Integration in Workbench

What was already possible in R13:• Two way thermal coupling with ANSYS Mechanical• Two‐way thermal coupling with ANSYS Mechanical (Static and Transient)

• One‐way force coupling with ANSYS Mechanical (Static and Transient)and Transient)

• One‐way thermal coupling with Fluent through UDF

• Use Design Explorer within WB

idi i l i i• Unidirectional CAD integration

© 2011 ANSYS, Inc. August 25, 201127

Maxwell – ANSYS Stress Coupling

Two way coupling non‐transient solvers and ANSYS stress solver is possible in R14is possible in R14

Approach:• The Force distribution is transferred as load into ANSYS MechanicalThe Force distribution is transferred as load into ANSYS Mechanical

• The node displacement information is sent back to Maxwell as deformed mesh

Maxwell ANSYS Mechanical

Force Distribution

Deformed Mesh

© 2011 ANSYS, Inc. August 25, 201128


Example: Air inductor

© 2011 ANSYS, Inc. August 25, 201129


B Field Force Distribution

MagneticForcesForces

Stress CalculationField Calculation

DisplacementsUpdated Mesh

Displacementsof mesh nodes

© 2011 ANSYS, Inc. August 25, 201130

Maxwell – Fluent Two‐Way Coupling

Approach:• The Loss distribution is transferred as load into Fluent

• The Temperature distribution is sent back to Maxwell

Maxwell ANSYS Fluent

Loss Distribution

Temperature

© 2011 ANSYS, Inc. August 25, 201131

p

Maxwell – Fluent Two‐Way Coupling

Example: Busbars – Electrical, Thermal, Structural

© 2011 ANSYS, Inc. August 25, 201132

PM Temperature Dependent Model

Maxwell 2D/3D can account for Permanent Magnet temperature dependency. The law works directly on intrinsic BiH curve with

fl d i B d i i i i i Hremanent flux density Br and intrinsic coercivity Hci

HBB i 0The Two temperature dependent parameters are remanent flux

density Br and intrinsic coercivity Hci

B and H can be described by second order polynomials asBr and Hci can be described by second order polynomials as

)()(1)()( 02

02010 TPTBTTTTTBTB rrr

)()( 1)()( 02

02010 TQTHTTTTTHTH cicici

where T0 is the reference temperature, and α1, α2, β1 and β2 are coefficients which are provided in supplier datasheets

)()()()( 002010 Qcicici

© 2011 ANSYS, Inc. August 25, 201133


Copied from vendor datasheet

Derived based on the temperature dependent demagnetization model

© 2011 ANSYS, Inc. August 25, 201134


C i it h h d i i ibl

© 2011 ANSYS, Inc. August 25, 201135

Coercivity change shows dynamic irreversible demagnetization during a transient process in one element

Performance Enhancements in 2D Transient Post ProcessingProcessing

• 4096 variations, with 200 time step per variation

• Update and open 2 XY reports• Update and open 2 XY reports

Without Cache With Cache

R13 3 hrs 30 mins 10 mins

R14 32 mins 5 mins 20 secs

Speed up 7X 2X

© 2011 ANSYS, Inc. August 25, 201136

Speed up 7X 2X

RMxprt

Analytical Seizing package for Electrical Machines Design

© 2011 ANSYS, Inc. August 25, 201137

Integrated Motor Solutions

• RMxprt automatic setup with one‐click for Maxwell 2D and 3D Solution• Minimum solving region creation with matching boundary setup • Motion and mechanical setup• Material setup including core loss and lamination• Winding and source setup with drive circuit• Auto‐create Simplorer design

© 2011 ANSYS, Inc. August 25, 201138

RMxprt – IPM Machine

RMxprt can set up the Maxwell 2D/3D project for IPM Machines• RMxprt does not (yet) solve for it• RMxprt does not (yet) solve for it

• Multi duct layers supported

© 2011 ANSYS, Inc. August 25, 201139

RMxprt – Axial Flux Machine

New machine topology: Axial Flux Machine• AC or PM Rotor• AC or PM Rotor

• Single or Double Side Stator

• Maxwell 3D auto‐setup

© 2011 ANSYS, Inc. August 25, 201140

Q3D

Quick RLC Extractor for 2D and 3D Structures

© 2011 ANSYS, Inc. August 25, 201141

Q3D – Magnetic Materials

Q3D can handle Magnetic Materials (in the linear part of B‐H curve)

Permeability can be frequency dependent

Typical Applications:

• Transformers DesignTransformers Design

• Shielding Design

• PCB with Magnetic Core Design

Q3D uses Boundary elements methodTo compute RLC parameters. It captures partial inductance in open loops

© 2011 ANSYS, Inc. August 25, 201142

p p p


Transformer Example

Goal: Get R(f), L(f)

DC< f < 1 MHzDC< f < 1 MHz

Magnetic Core (µ = 500, σ= 100000)

© 2011 ANSYS, Inc. August 25, 201143

Solid Copper Coil


Set up For the Coil:

• Cut a very small piece of the Coil (to have loop inductance ≈ Partial• Cut a very small piece of the Coil (to have loop inductance ≈ Partial Inductance)

• Create an active Net with Source/Sink

Set up For the Core:

• Create an active Net (no Source/Sink necessary)

Sink (Sink1)Sink (Sink1)

S

© 2011 ANSYS, Inc. August 25, 201144

Source (Coil_in)


Using Maxwell:

• Need to mesh to account for skin depth at each frequency Can lead to huge• Need to mesh to account for skin depth at each frequency. Can lead to huge mesh for higher frequencies as skin depth decreases: at 1 MHz, δ = 0.07mm

• Two Matrix resolutions at each frequency (one for Fields, one for R, L)

Advantages using Q3D:

• Only 1 resolution for DC 1 resolution for ACOnly 1 resolution for DC, 1 resolution for AC

• Rest of the spectrum determined by blended algorithm

• No need to mesh for skin depth

• Easier setup

© 2011 ANSYS, Inc. August 25, 201145


Q3D AC 10 s Maxwell 50 min

Q3D DCQ3D DC 6min 30 s

Sweep 2 s

(regardless of # of Freqs) (4 Freq <1MHz)

Total Q3D < 7 min 50 min

Simulation Time

Q3DDesign2XY Plot 1 Q3DDesign2XY Plot 1

Peak RAM 0.6 Gb 5 Gb

Each Additional Freq 15 min Q3D

45.00

50.00

55.00

oil:C

oil_

in) [

nH]

Q3DDesign2XY Plot 1 ANSOFT

Curve InfoACL(Coil:Coil_in,Coil:Coil_in)

Setup1 : Sw eep2

45.00

50.00

55.00

oil:C

oil_

in) [

nH]

Q3DDesign2XY Plot 1 ANSOFT

Curve InfoACL(Coil:Coil_in,Coil:Coil_in)

Setup1 : Sw eep2

M ll

30.00

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40.00

ACL(

Coi

l:Coi

l_in

,Co

30.00

35.00

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ACL(

Coi

l:Coi

l_in

,CoMaxwell

© 2011 ANSYS, Inc. August 25, 201146

0.00 0.01 0.10 1.00 10.00 100.00Freq [MHz]

25.00 0.00 0.01 0.10 1.00 10.00 100.00

Freq [MHz]

25.00

L(f) HFSS

Q3D – New Features

Circuit Export:

• User can now pick a frequency in the sweep and export the SPICE netlist or• User can now pick a frequency in the sweep and export the SPICE netlist or the Simplorer circuit. Q3D adjusts for corresponding R(f) and L(f). The exported circuit is valid at the given frequency f.

• Only Simplorer supports Frequency dependent models from Q3D• Only Simplorer supports Frequency dependent models from Q3D

The feature has been extended to 2DExtractor

© 2011 ANSYS, Inc. August 25, 201147

Q3D ‐ 3D Modeler Enhancements

View customization

• Z-stretch• 64‐bit user interface

© 2011 ANSYS, Inc. August 25, 201148

This enhancement is available to all 3D products

Ansoft to ANSYS Geometry Transfer

• Geometry and material assignment transfer from Ansoft systems to ANSYS systemsy y

• Possible to consume Ansoft geometry directly in mechanical or through DesignModeler

• Further geometry edits are possible in DM if user has license

© 2011 ANSYS, Inc. August 25, 201150

Multiple Geometry Links

Possible to consume geometry from multiple upstream sources• Source can be any of CAD, DesignModeler or Ansoft products• Creates UDM for each geometry input

© 2011 ANSYS, Inc. August 25, 201151

Ansoft HPC Enhancements: Fixed VariablesApplications• UDPs

– Improves post processing speed because the user can select which variables will actually be indexed for sweeping

Wave Winding UDP

be indexed for sweeping– Previously all variables were selected for

indexing even if they are were not being swept

– Applies to all Desktop products

Desktop supports fixed variables• Solution database is NOT indexed by these variables

• User will not sweep themp• Any change to these variables invalidate existing solutions

Benefits• F t t l ti d t b• Faster access to solution database– Faster post‐processing

• Improved reporter‐dialog response– No sluggishness

© 2011 ANSYS, Inc. August 25, 201152

gg

CAD Integration on WB Improvements

Added support for parametric analysis and DSO of CAD parameters

© 2011 ANSYS, Inc. August 25, 201153

Reliability Engineering Design ‐ DOE

Distribute parametric studies across available hardware to expedite design

i i iIdentify key design parameters

optimization

Identify variation of performance with respect to variations of parameters

© 2011 ANSYS, Inc. August 25, 201154

Reliability Engineering Design – Six Sigma

Input parameters vary!A product has Six Sigma quality if only 3.4 parts out of every 1 million manufactured fail

Output parameters

How performance will vary ith d i t l ?

how many parts will likely fail?

which inputs require the greatest control?

© 2011 ANSYS, Inc. August 25, 201155

with design tolerances? likely fail? the greatest control?

Appendix:Mapping field coupling capabilities available in R14Mapping field coupling capabilities available in R14

Maxwell 2D/3D ANSYS Static/Transient StructuralTwo‐Way Link

ANSYS Static/Transient StructuralOne‐Way Link (Maxwell upstream)y y ( p )

Electrostatic

Magnetostatic

ddEddy Current

Magnetic Transient

Electric Transient

Maxwell 2D/3D ANSYS Static/Transient ThermalTwo‐Way Link

ANSYS Static/Transient ThermalOne‐Way Link (Maxwell upstream)

El t t tiElectrostatic

Magnetostatic

Eddy Current

© 2011 ANSYS, Inc. August 25, 201157

Magnetic Transient

Electric Transient

Appendix:Mapping field coupling capabilities available in R14Mapping field coupling capabilities available in R14

Maxwell 2D/3D Fluent Steady State Fluent TransientMaxwell 2D/3D Fluent Steady State(Thermal link)Two‐Way Link

Fluent Transient(Thermal link)

One‐Way Link (Maxwell upstream)

Electrostatic

Magnetostatic

Eddy Current

M ti T i tMagnetic Transient

Electric Transient

© 2011 ANSYS, Inc. August 25, 201158

Appendix:Mapping Simplorer system coupling capabilities availableMapping Simplorer system coupling capabilities available in R14

Solver Reduce Order Equivalent Co‐Simulation Push BackModel

qCircuit/Matrices/Look‐Up Tables

Excitation

Maxwell 2D/3DElectrostaticMagnetostatic

Maxwell 2D/3Ddd CEddy Current

Maxwell 2D/3DTransient

Q3D

HFSS, SIwave

RMxprt, PExprt

© 2011 ANSYS, Inc. August 25, 201159

Appendix:Mapping Simplorer system coupling capabilities availableMapping Simplorer system coupling capabilities available in R14

Solver Reduce Order Equivalent Co‐Simulation Push BackModel

qCircuit/Matrices/Look‐Up Tables

Excitation

Fluent Transient

Icepak

ANSYS Mechanical(Modal)

ANSYS RBD

SimulinkSimulink

ModelSim

Mathcad

© 2011 ANSYS, Inc. August 25, 201160

LF Electromagnetics 14.0 UpdaUpda etes - Ansys...SIwave and HFSS Flow 1 Export an equivalent circuit...

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Transcript of LF Electromagnetics 14.0 UpdaUpda etes - Ansys...SIwave and HFSS Flow 1 Export an equivalent circuit...