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JMAG Powered by GPU:
A Novel Solution for Electromechanical
Design
March 2013
David Farnia JSOL Corporation
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× Contents
What is JMAG?
Electromagnetic Solver vs Structural Solver
Customer Example
Multiple GPUs vs CPUs
Future JMAG Development
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× What is JMAG?
JMAG is…
Finite Element Analysis (FEA) software for
electromechanical design.
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× About JMAG and JMAG-RT
JMAG Designer is the nucleus around which all other JMAG
tools function
JMAG RT can generate high fidelity 1D models for system
simulations based on JMAG Designer analyzes
This combination of power and speed allows customers to
analyze a wide range of electromagnetic phenomena
Analysis Functions
Magnetic field analysis
Electric field analysis
Structural analysis
Thermal analysis
and coupled analysis
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× JMAG Group
Oceania
Impakt-Pro Ltd.
Vietnam
New System Vietnam Co., Ltd.
Taiwan
FLOTREND CORPORATION
Korea
EMDYNE Inc
North America
Powersys Solutions
Europe
POWERSYS
India
ProSIM R&D Center Pvt. Ltd.
Singapore/Malaysia
PD Solutions Thailand
JSIM Co.,Ltd
China
IDAJ
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Technical Partners
CAD/CAE
Dassault Systems (CATIA, Abaqus,
SolidWorks)
PTC (Pro/E)
LMS International (Virtual.Lab)
Altair Engineering (AcuSolve)
ESTECO (modeFRONTIER)
Noesis (OPTIMUS)
SCAI Fraunhofer (MpCCI)
SPEED Lab. (SPEED)
MILS/SILS
MathWorks (MATLAB/Simulink)
Gamma Technologies (GT-Suite)
Synopsys (Saber)
Powersim (PSIM)
MentorGraphics (SystemVision)
HILS
dSPACE
National Instruments (LabVIEW)
OPAL-RT
Fujitsu
Toyota Technical Development Co.
DSP Technology
University and Material
Company
Material Manufacturers Providing
Material Data (~14)
University Partnership (~15)
University of Wisconsin-
Madison
Technical University of
Darmstadt
Technical University of Graz
University of Sheffield
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Areas of Use
Vehicle
Home Appliances
Factory Automation
Heavy Industry
Digital Equipment
Electric Power Facilities
…
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Example Models
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Motors/Generators
Actuators
Transformers
Induction heating
Sensors
EM Shields
etc.
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Demand for Precise High Speed Analysis
History of EM analysis
Mainframe
Workstation
PC
HPC
Large Machines
EV/HEV, EPS
Air-conditioner Factory automation
Wind generator
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More Realistic Analyses
IPM Motor Accounting for Lamination Losses High revolution speed induces higher Joule Losses
Each lamination sheet needs to be modeled
The mesh must capture the skin depth to accurately reflect the effects
of eddy currents
Traction motor
Steel
Air
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More Realistic Analyses
High Frequency Transformer Accounting for Winding
Losses Skin and proximity effects increase the losses
Twisted strand wires must be modeled
It is necessary to use a skin depth mesh to accurately capture the
eddy currents
As accuracy increases,
so does the amount of data that must be modeled…
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Electromagnetic Solver vs Structural Solver
EM simulation presents unique challenges:
The solver is based on an edge element calculation
A typical EM model must be coupled to a circuit which
governs how the model is driven
Large differences (~1:10,000) in material properties such as
permeability and element sizes are present in these models
Also possible to have non-linear materials with severe
convergence tolerances.
EM solver vs Structural solver
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Brief History of Solvers
Edge Element with ICCG method (1993)
Convert from nodal element with direct solver to edge element
with ICCG method
ICCG becomes the standard method for EM solvers
A-Phi Method (1997)
Improved convergence by adding the electric scalar potential
(Phi) as unknown quantity
Distributed Calculations (2000)
SMP(2007)
DMP(2009)
Time Periodic Explicit Error Correction method (2011)
Lamination Loss (2012)
GPU (2012)
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High-Speed JMAG Solver
JMAG replicates the accuracy of 3D
lamination losses with the speed of a
2D analysis.
SPM motor
One sixth to
steady state
Time history of torque
IPM motor Time for simulation
Time history of stator
losses
Time periodic explicit error
correction (TP-EEC) method reaches
steady state more quickly with
transient characteristics arising
from inductance.
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Parallel Simulation for Large Scale Models
Magnetic flux density
IPM motor IEEJ IPM MOtor Magnetic head
Speedup Speedup Speedup
Simulation through parallel calculation is effective in speeding up large scale electromagnetic analyses.
Eddy
current
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JMAG also supports the use of network calculation.
A single job can be calculated using networked
computers which are remotely controlled by a
single PC
Distributed Processing
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GPU vs CPUs
High Revolution Speed Electric Motor Analysis
株式会社島津製作所 光岡 大輔氏「高速モータの電磁界解析事例紹介(JMAG-GPUソルバを用いた事例)」
JMAGユーザ会2012 発表資料より引用
FEA Model
Elements : 2,120,732
Nodes : 507,958
PC Spec.
OS : Windows7 x64 RAM : 24GByte CPU : Intel(R) Xeon(R) [email protected] GPU : Tesla C2075
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Tesla GPU vs Kepler GPU
Tesla K20 is twice as fast as C2075
株式会社島津製作所 光岡 大輔氏「高速モータの電磁界解析事例紹介(JMAG-GPUソルバを用いた事例)」
JMAGユーザ会2012 発表資料より引用
High Revolution Speed
Electric Motor Analysis
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Multiple GPUs vs CPUs
4 GPUs doubles the speed of 1 GPU
PC spec.
CPU: Intel(R) Xeon(R) [email protected]
GPU: Tesla C2075, Tesla K20 Nodes: 467,393
Elements: 808,864
Hybrid Stepping Motor Analysis
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Future Development
JMAG Solver speed will increase!
2013 2014 2015 2016
1
100
10
3
Speed-up
Many cores
Massively parallel
computing
Linear solver
Non-linear
method GP-GPU Stable
Fundamental
Technology
Parallel
Processing
Technologies Goal
Start
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Contact
Engineering Technology Division,
JSOL Corporation
[Tokyo]: Harumi center Bldg. 2-5-24, Harumi, Chuo-ku, Tokyo, 104-0053
TEL:03-5859-6020 / FAX:03-5859-6035
[Nagoya]: Marunouchi KS Bldg 2-18-25, Marunouchi, Naka-ku, Nagoya-shi, 460-0002
TEL:052-202-8181 / FAX:052-202-8172
[Osaka]: Tosabori Daibiru Bldg. 2-2-4 Tosabori, Nishi-ku, Osaka, 550-0001
TEL:06-4803-5820 / FAX:06-6225-5826
Email: [email protected]
URL: http://www.jmag-international.com/
JMAG is a registered trademark of the JSOL Corp..
This document cannot be duplicated or distributed without the expressed permission of JSOL.
The other products and services included in this document are the trademarks or registered trademarks of their respective copyright holders.
This document was created March, 2013 and the information may change without notice.
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