Electromagnetics Highlights

© 2013 ANSYS, Inc. March 3, 20141 ANSYS Confidential & Proprietary Information

ANSYS R15LF Electromagnetics Highlights

Ashish Deshpande

Ansys, Pune

© 2012 ANSYS, Inc. March 3, 20142

LF Electromagnetics

Performance Improvements

Customer Driven Development

Electromechanical System Integration

Design Flow Automation

© 2011 ANSYS, Inc. March 3, 20143

Enhanced scalability

Extended coverage

Large scale DSO

-8

-4

0

4

8

-20 -10 0 10 20

B (

kG

)

H (O)

Vector hysteresis

Core loss effects

EM Force Acoustic analysis

Embedded Software

HEV Libraries

IRR test circuit - 5SLD0650J4503000

00 00 0 0

+

V

UU

L_d

EQU FML1

Ut:=8.616e-005*(273.15 +TACT)L_d:=(Ud + VACT)/DIACTfrequ_gen:=1/PERIODTend:=PERIOD*Cycles

+

V

VM_Ur

ICA:FML_INIT2

TACT:=125IACT:= 650DIACT:=4200e6VACT:=2800PERIOD:=4uCycles:=15HMIN:=5nHMAX:= 10uEQU

FML3

deltaT:=PERIOD/128

if(time<deltaT) {UU:= time/deltaT*VACT;}else {UU:=VACT;}

if(time<deltaT) {II:= time/deltaT*IACT;}else {II:=IACT;}

A

AM_Irr

ICA:FML_INIT3

c_s:=4*1e-12r_s:= 4*sqrt(L_d/c_s)

Switch

II

Rs1

r_s

Cs1c_s

D_Ld

D_clamp

+

V

syncDI

U1

IRR test circuit - 5SLD0650J4503000

00 00 0 0

+

V

UU

L_d

EQU FML1

Ut:=8.616e-005*(273.15 +TACT)L_d:=(Ud + VACT)/DIACTfrequ_gen:=1/PERIODTend:=PERIOD*Cycles

+

V

VM_Ur

ICA:FML_INIT2

TACT:=125IACT:= 650DIACT:=4200e6VACT:=2800PERIOD:=4uCycles:=15HMIN:=5nHMAX:= 10uEQU

FML3

deltaT:=PERIOD/128

if(time<deltaT) {UU:= time/deltaT*VACT;}else {UU:=VACT;}

if(time<deltaT) {II:= time/deltaT*IACT;}else {II:=IACT;}

A

AM_Irr

ICA:FML_INIT3

c_s:=4*1e-12r_s:= 4*sqrt(L_d/c_s)

Switch

II

Rs1

r_s

Cs1c_s

D_Ld

D_clamp

+

V

syncDI

U1

Power devices

Electromechanical Systems

R15

Advanced Technology

and Multiphysics

High Performance Computing

Systems and Design Flow

Harmonic stress coupling

© 2012 ANSYS, Inc. March 3, 20144

Performance Improvements

Transient Steady State Analysis

2D Meshing


6 cycles = 30 simulation hrs

• Drastically reduced cycles to reach AC steady-state

• Improvements extended to more LF related applications in R15

Significant Transient Solution Speed Up

100 cycles = 500 simulation hrs

16 X

Very Effective

Limitation:

With LF envelope component


Uniform mesh advantages

• Enhance the accuracy of loss and force computation

• Avoid unnecessary numerical noise in symmetric model

Remarkable 2D Solution Time Improvement

Tau LayerClassic Skin Depth

12 mins 47 sec !!

> 1 min per time step

4 hrs 14 mins20X


Customer Driven Development

Vector Hysteresis Modeling

Nonlinear Impedance for Electromagnetic Harmonic

Multiphysics Simulation

Device Characterization


Basic Properties

Hx=0 ; Hz=0

Mx=0; Mz=0

�→

�→

Hy

My

2D/3D Vector Hysteresis Modeling

Competitive Advantages

-8

-4

0

4

8

-20 -10 0 10 20

B (k

G)

H (O)

Hysteresis Motor with Solid Rotor

Satisfy All Hystereis Properties

Memory Efficient

Convenient Parameter Identification

Minor Loop

handled inherently

9 © 2013 ANSYS, Inc. March 3, 2014 ANSYS Confidential

Nonlinear Impedance for LF Electromagnetics

Losses are approximately 15% higher for the

nonlinear boundary vs. the linear boundary


Noise-Vibration in R15

Thermal

Electromagnetic Fluid Flow

Structural

Extended Multiphysics Simulation


Electrical machine design

• Predict and reduce electromagnetic induced

vibration and noise from electric motor

Multiphysics - Harmonic Stress Coupling

Magnetic FieldStructural Dynamics

Acoustic Field

Forces

Displacements

© 2011 ANSYS, Inc. March 3, 201412

• Model and control arcing in electrical contactors

– An electric arc is an electrical breakdown of a gas that

produces an ongoing plasma discharge, resulting from a

current through normally nonconductive media, such as air

• Analyze the H field and voltage due to the arc

– Plasma* in-between two metal bars

– Coupling of fluid motion and electromagnetics

• Realistic simulation must consider saturation in the

ferromagnetic splitter plates

Multiphysics - Element Based Conductivity Coupling

I

I

*Note: CFD is used to simulate the plasma behavior

© 2011 ANSYS, Inc. March 3, 201413


Eddy

Current

Solution1

Eddy

Current

Solution2

Eddy

Current

Solution3

Temperature Fluent Transient

t1 t2 t3

Conductivity

B fields, loss

distribution

Temperature

Conductivity

B fields, loss

distribution

B fields, loss

distribution

Conductivity

Time

Temperature

CFD Transient coupled with LF Electromagnetics Eddy-Current

© 2011 ANSYS, Inc. March 3, 201414


Liquid Glass

Copper bars (current excitation)

Inox (water Cooling system)

Melting Pot Example The liquid glass is heated using eddy current induced at 282 kHz

Maxwell - Power Losses

Maxwell

Magnetic Flux Density

Fluent – Temperature Profile


R14.5

• Users manually interate the coupled simulations

• 30 mouse clicks for 10 iterations

Multiphysics – Feedback Automation

R15

• Coupled simulations stop automatically

• Iteration status directly accessible in WB schematic


0

0

Port1

Port2

Port3 Port4

Port6

Q1D

G

S

TJ

TC

Q2D

G

S

TJ

TC

Q3

Q4D

G

S

TJ

TC

Q5 D

G

S

TJ

TC

Q6

NTC

Sh

un

t

FTCO3V455A1 Pkg

Sh

un

t_N

Ph1_Sense

Q1

_S

Q4

D

Ph2_Sense

Q2

_S

Q5

_D

Ph3_Sense

Q3

_S

Q6

_D

Q1

_G

Q2

_G

Q3

_G

Q4

_G

Q5

_G

Q6

_G

Sh

P_

Q4

_S

Sh

P_

Q5

_S

Sh

P_

Q6

_S

Th

1_

Pa

d

Th

2_

Pa

d

Vb

att_

Q1

_D

Vb

att_

Q2

_D

Vb

att_

Q3

_D

Vbatt_Sense

GND

Ph1

Ph2

Ph3

Q1

_G

_L

ea

d

Q2

_G

_L

ea

d

Q3

_G

_L

ea

d

Q4

_G

_L

ea

d

Q5

_G

_L

ea

d

Q6

_G

_L

ea

d

Sh

un

t_P

Th

1_

Le

ad

Th

2_

Le

ad

Vbatt

Vdc1EMF=13.8V

Vgs_Cmd1

Rgate

Rg

+

V

Vgs_Char

+

V

VM1

L1L=18uH

L2L=18uH

+

V

VM2

+

V

Vgs_Spice

Rgate1Rg

Vgs_Cmd2

+

V

Vbatt_Sense

A

Id_Char

A

Id_Spice

Tcase_Ext

L3L=10uH

+

V

Vds_Char

+

V

Vds_Spice

+

VVds_SpiceExt

+

VVds_CharExt

+

V

Vgs_SpiceInt

+

V

Vgs_CharInt

EQU

FML1

I

Char_Energy_Calc

I

Spice_Energy_Calc

Rgate2Rg

D1

D2

Rgate3Rg

ICA:

FML_INIT1

Rg:=45

A

Idc_Rtn

Overall Test Schematic

New Power Electronics Capabilities

Simplorer Power MOSFET

Q3D Package Parasitics

FTCO3V455A1 Pkg

Sh

un

t_N

Ph1_Sense

Q1

_S

Q4

D

Ph2_Sense

Q2

_S

Q5

_D

Ph3_Sense

Q3

_S

Q6

_D

Q1

_G

Q2

_G

Q3

_G

Q4

_G

Q5

_G

Q6

_G

Sh

P_

Q4

_S

Sh

P_

Q5

_S

Sh

P_

Q6

_S

Th

1_

Pa

d

Th

2_

Pa

d

Vb

att

_Q

1_

D

Vb

att

_Q

2_

D

Vb

att

_Q

3_

D

Vbatt_Sense

GND

Ph1

Ph2

Ph3

Q1

_G

_L

ea

d

Q2

_G

_L

ea

d

Q3

_G

_L

ea

d

Q4

_G

_L

ea

d

Q5

_G

_L

ea

d

Q6

_G

_L

ea

d

Sh

un

t_P

Th

1_

Le

ad

Th

2_

Le

ad

Vbatt

Vbatt_Sense

CFD LTI ROM Link

New Power MOSFET Module


Design Flow Automation

Electric Machine Design Toolkit

Wire Power Transfer

User Experience

© 2012 ANSYS, Inc. March 3, 201418

Electrical Machines Design Flow

RMXprt

Maxwell2D

Maxwell3D

Toolkit

UDOs &Toolkit

Initial Design FE Design Optimal Design


Seamless Customization via UDO/Toolkit

© 2012 ANSYS, Inc. March 3, 201420

Seamless Customization via UDO/ToolkitTotal loss

Copper loss

Core loss

Magnet loss

Magna Electronics IPM Motor


Wireless Power Transfer

0

0

0

R1

7.2mOhm

R2

3.6mOhm

Cs

1.72uF

Cp

4.96uF

Rload

13ohm

W

+WM1

W

+WM2

D4

D3

D2

D1

IGBT4

IGBT3

IGBT2

IGBT1

C1

1000uF

TRANS4

DT4

TRANS3

SINE1.VAL > TRIANG1.VAL

TRANS2

DT1

TRANS1

SINE1.VAL < TRIANG1.VAL

STATE_11_4

SET: TSV4:=0SET: TSV3:=0SET: TSV2:=0SET: TSV1:=0DEL: DT4##Dead_Time

STATE_11_3

SET: TSV4:=0SET: TSV3:=1SET: TSV2:=1SET: TSV1:=0

STATE_11_2


STATE_11_1


TRIANG1

AMPL=1FREQ=Carrier_Freq

SINE1

AMPL=Modulation_IndexFREQ=Frequency

ICA:FML_INIT1

Modulation_Index:=0Carrier_Freq:=20kFrequency:=20k

DC_Source:=400Dead_Time:=2u

~

3PHAS

~

~

A * sin (2 * pi * f * t + PHI + phi_u)

PHI = 0°

PHI = -120°

PHI = -240°

THREE_PHASE1

D5

D6

D7

D8

D9

D10 Battery

- +

LBATT_A1

D11

D12

D13

D14

C2

1uF

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-150.00

-100.00

-50.00

0.00

50.00

100.00

150.00

Y1

[A

]

Curve Info rms

WM1.ITR 41.6165

WM2.ITR 34.8648

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-800.00

-300.00

200.00

700.00

Y1 [

V]

Curve Info rms

WM1.VTR 281.0066

WM2.VTR 321.9453

2.900 2.925 2.950 2.975 3.000Time [ms]

-250.00

-125.00

0.00

125.00

250.00

Y1

[A

]

-1000.00

-500.00

0.00

500.00

873.02

Y2

[V

]

MX1: 2.9200

MX2: 2.9811

-408.7847-315.0105-64.8250

-40.2840

-377.1247-319.5653 -53.6971

-0.0037

0.0610

Curve Info Y Axis rms

WM1.ITR Y1 38.9542

WM2.ITR Y1 34.1140

WM1.VTR Y2 276.0822

WM2.VTR Y2 316.6292

PWR

Probe

PWR_Probe1

Current_1:srcCurrent_2:src

Current_1:snkCurrent_2:snk

PWR

Probe

PWR_Probe2

0

0

0

R1

7.2mOhm

R2

3.6mOhm

Cs

1.72uF

Cp

4.96uF

Rload

13ohm

W

+WM1

W

+WM2

D4

D3

D2

D1

IGBT4

IGBT3

IGBT2

IGBT1

C1

1000uF

TRANS4

DT4

TRANS3


TRANS2

DT1

TRANS1


STATE_11_4


STATE_11_3


STATE_11_2


STATE_11_1


TRIANG1


SINE1


ICA:FML_INIT1



~

3PHAS

~

~


PHI = 0°

PHI = -120°

PHI = -240°

THREE_PHASE1

D5

D6

D7

D8

D9

D10 Battery

- +

LBATT_A1

D11

D12

D13

D14

C2

1uF

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-150.00

-100.00

-50.00

0.00

50.00

100.00

150.00

Y1

[A

]

Curve Info rms

WM1.ITR 41.6165

WM2.ITR 34.8648

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-800.00

-300.00

200.00

700.00

Y1 [

V]

Curve Info rms

WM1.VTR 281.0066

WM2.VTR 321.9453

2.900 2.925 2.950 2.975 3.000Time [ms]

-250.00

-125.00

0.00

125.00

250.00

Y1

[A

]

-1000.00

-500.00

0.00

500.00

873.02

Y2

[V

]

MX1: 2.9200

MX2: 2.9811

-408.7847-315.0105-64.8250

-40.2840

-377.1247-319.5653 -53.6971

-0.0037

0.0610


WM1.ITR Y1 38.9542

WM2.ITR Y1 34.1140

WM1.VTR Y2 276.0822

WM2.VTR Y2 316.6292

PWR

Probe

PWR_Probe1



PWR

Probe

PWR_Probe2

Wireless Power Transformer


Eddy Current Matrix Post Processing

Geometric Coil Turns Lumped Object

2 pins !!105 concentric rings

210 pins !!


0

0

0

R1

7.2mOhm

R2

3.6mOhm

Cs

1.72uF

Cp

4.96uF

Rload

13ohm

W

+WM1

W

+WM2

D4

D3

D2

D1

IGBT4

IGBT3

IGBT2

IGBT1

C1

1000uF

TRANS4

DT4

TRANS3


TRANS2

DT1

TRANS1


STATE_11_4


STATE_11_3


STATE_11_2


STATE_11_1


TRIANG1


SINE1


ICA:FML_INIT1



~

3PHAS

~

~


PHI = 0°

PHI = -120°

PHI = -240°

THREE_PHASE1

D5

D6

D7

D8

D9

D10 Battery

- +

LBATT_A1

D11

D12

D13

D14

C2

1uF

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-150.00

-100.00

-50.00

0.00

50.00

100.00

150.00

Y1

[A

]

Curve Info rms

WM1.ITR 41.6165

WM2.ITR 34.8648

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-800.00

-300.00

200.00

700.00

Y1

[V

]

Curve Info rms

WM1.VTR 281.0066

WM2.VTR 321.9453

2.900 2.925 2.950 2.975 3.000Time [ms]

-250.00

-125.00

0.00

125.00

250.00

Y1

[A

]

-1000.00

-500.00

0.00

500.00

873.02

Y2

[V

]

MX1: 2.9200

MX2: 2.9811

-408.7847-315.0105-64.8250

-40.2840

-377.1247-319.5653 -53.6971

-0.0037

0.0610


WM1.ITR Y1 38.9542

WM2.ITR Y1 34.1140

WM1.VTR Y2 276.0822

WM2.VTR Y2 316.6292

PWR

Probe

PWR_Probe1



PWR

Probe

PWR_Probe2

0

0

0

R1

7.2mOhm

R2

3.6mOhm

Cs

1.72uF

Cp

4.96uF

Rload

13ohm

W

+WM1

W

+WM2

D4

D3

D2

D1

IGBT4

IGBT3

IGBT2

IGBT1

C1

1000uF

TRANS4

DT4

TRANS3


TRANS2

DT1

TRANS1


STATE_11_4


STATE_11_3


STATE_11_2


STATE_11_1


TRIANG1


SINE1


ICA:FML_INIT1



~

3PHAS

~

~


PHI = 0°

PHI = -120°

PHI = -240°

THREE_PHASE1

D5

D6

D7

D8

D9

D10 Battery

- +

LBATT_A1

D11

D12

D13

D14

C2

1uF

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-150.00

-100.00

-50.00

0.00

50.00

100.00

150.00

Y1

[A

]

Curve Info rms

WM1.ITR 41.6165

WM2.ITR 34.8648

2.00 2.20 2.40 2.60 2.80 3.00Time [ms]

-800.00

-300.00

200.00

700.00

Y1

[V

]

Curve Info rms

WM1.VTR 281.0066

WM2.VTR 321.9453

2.900 2.925 2.950 2.975 3.000Time [ms]

-250.00

-125.00

0.00

125.00

250.00

Y1

[A

]

-1000.00

-500.00

0.00

500.00

873.02

Y2

[V

]

MX1: 2.9200

MX2: 2.9811

-408.7847-315.0105-64.8250

-40.2840

-377.1247-319.5653 -53.6971

-0.0037

0.0610


WM1.ITR Y1 38.9542

WM2.ITR Y1 34.1140

WM1.VTR Y2 276.0822

WM2.VTR Y2 316.6292

PWR

Probe

PWR_Probe1



PWR

Probe

PWR_Probe2

Simplorer/Maxwell State Space Model

Wireless Power Transformer Battery

Enabled by Maxwell eddy current matrix post processing

R14.5R15

Power transfer for moving car


• New Visual Component Search engine

• Organization by use

• Context and component menu simplification

– 50% reduction in the number of commands

Simplorer 2014 includes major improvements to User Experience and Performance


EelectromechanicalSystem Integration

New VHDL-AMS HEV Model Libray

Modelica FMI Links


New VHDL-AMS HEV LibrariesAllow easy prototyping of automotive systems


Links with Embedded and Modelica through FMI

Extending System Simulation Capabilities


Links with Embedded and Modelica through FMI

Extending System Simulation Capabilities


Documents

Electromagnetics Highlights