Powerful Guide FeaturesIn addition to the Self Learning System (SLS) currently available to productively learn JMAG, a Self Guiding System (SGS) has been added to support users as they encounter problems, such as JMAG terminology they don't understand or where to find documentation when running their own analyses. The documentation that is needed can be found simply by entering a keyword.
Self Guiding System
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Highly Controllable Mesh FeaturesHaving technology that can generate mesh in the desired areas is vital when using the finite element method. Technology that can generate this mesh appropriately is required to have an adequate balance between the analysis accuracy and analysis time.
JMAG offers features that can generate mesh without requiring additional effort by the user to simulate the physical phenomena which is unique to electromagnetic field analyses, such as mesh modeling the skin effect and rotation periodic mesh. The ability to simulate thin plate models more accurately has been enhanced in this version when generating mesh.
Generate Thin Plate MeshGenerating mesh for an extremely thin plate model in the analysis space, such as a shield or chassis panel, is difficult using conventional mesh generation methods. However, the thin plate mesh feature can generate a sufficiently large mesh in the plane direction based on the layer of mesh that is generated in the thickness direction. The analysis time is reduced and the accuracy improved for problems related to the scale of a model, such as analyzing shield rooms and the eddy currents that are produced in thin plates.
This feature can only be used for the magnetic field analysis because conditions cannot be set to thin plate mesh at this time.
Analysis example JAC53 - Magnetic Shielding Analysis of a Shield Room
The magnetic flux density distribution
in the shield room and surrounding air region
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Manual Mesh EditorA manual mesh editor has been added to JMAG-Designer based on the requests of our users limited by only being able to generate mesh automatically. Manually generating mesh allows the experience gained generating mesh in JMAG-Studio to be applied to analyses run in JMAG-Designer.
Just like JMAG-Studio, mesh can be generated using triangle/square elements for 2D models and a 3D model can be created by dragging the 2D mesh model. These features have been enhanced even further in JMAG-Designer to make creating geometry easier using clear interface.
Manual Mesh Editor
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Reinforced Material FeaturesThe calculation solver and modeling, such as the modeling of materials, is vital to run highly accurate analyses. JMAG provides various properties for magnetic materials as a database with the help of the material manufacturers. Reinforcing the material features is a primary point in the development of JMAG, especially for this version.
Including BH curves of Structural Materials from VacuumschmelzeMagnetic properties for general structural materials of steel that have been so highly requested, such as S45C and SPCC, have been added to the database. These magnetic properties were added using measurements from research institutes which contribute to improving the analysis accuracy.
In addition, magnetic properties from Vacuumschmelze (VAC), a dominant magnetic material manufacturer in Europe, have been added to the material database. Properties including silicon steel and permalloy type soft magnetic materials are now there for you to use as necessary.
Temperature Dependent Magnetic PropertiesTemperature dependent magnetic materials have to be used to improve the accuracy when running coupled thermal and magnetic field analyses that have large temperature variations. The temperature dependent magnetic materials that have been supported by user subroutines have been standardized.
These properties allow phenomena, especially in the magnetic saturation region, to be simulated more accurately than models using the conventional temperature dependent permeability. The accuracy has been vastly enhanced for analyses that have temperature variations over a wide-range caused by large currents, such as high-frequency induction heating.
However, the user needs to define these properties because the temperature dependent material properties are not part of the material database.
Analysis example JAC47 - High-Frequency Induction Heating Analysis of a Crankshaft
Temperature Dependent Magnetic Properties
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Versatile Display FeaturesJMAG also focuses on developing features capable of displaying the analysis results as clearly as possible, which are indispensable to simulation software as a measuring instrument or experimental device.
Multiview FeatureThe multiview feature is a feature to display multiple windows in the graphics screen. For example, the problem causing iron loss can be grasped quickly in addition to the areas that the iron loss is produced by displaying and comparing the magnetic flux density distribution and iron loss distribution. The structure can also be evaluated easily to limit vibrations resulting from the relationship of the magnetic flux density distribution, electromagnetic force, and deformation comparing the results obtained in a magnetic field analysis and structural analysis.
Multiview Feature
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View ControlThe viewpoint used to display a model can now be defined more easily using numerical settings. Models can now be displayed from a more specific viewpoint. The ease of creating reports can be further increased by combining this feature with the viewpoint list. This feature combined with the multiview feature provides an even clearer evaluation of the analysis results.
View Control
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Displaying the Demagnetization Ratio of MagnetsThe demagnetization ratio of magnets can now be displayed. The behavior of the magnetic flux density variations can be pursued by setting the base condition of the magnetic flux density for magnets. An even more comprehensive analysis of magnets is made possible using a similar feature, the permanence coefficient distribution, with this feature. Analysis example JAC34 - Demagnetization Analysis of an SPM Motor
Analysis example JAC120 - Thermal Demagnetization Analysis of an SPM Motor
Displaying the Demagnetization Ratio of Magnets
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User ComponentsUser components are a feature that runs user-defined calculations in the post-processing for physical quantities obtained in a JMAG analysis. The analysis results can be evaluated based on the criteria the users would like to focus, such as the physical quantities after running four arithmetic operations that have been defined, or displaying the maximum/minimum of all the steps for the hysteresis using a contour plot. User components are available in JMAG-Studio, but they have been revolutionized for better usability for implementation into JMAG-Designer.
Analysis example JAC160 - Analysis of the Temperature Necessary for Induction Hardening of a Gear
Maximum temperature distribution
(Threshold: Hardening temperature)
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Reinforced Coupled Analysis FeaturesImproving the overall performance of JMAG independently is very important, but the analysis capabilities can be further extended by having greater synergy when linking to advanced third-party software for coupled analysis. JMAG strives to strengthen its linking capabilities with third-party solutions based on the concept of an open interface. This version of JMAG has the capability to link to LMS Virtual.Lab. Other links, such as expanding the conventional link to SPEED to SPEED-IMD, have also been implemented.
Linking to LMS Virtual.LabThe coupled analysis feature with LMS Virtual.Lab brings new added value to JMAG. The highly accurate electromagnetic force results obtained in JMAG can be utilized as excitation force in the powerful structural or noise analyses in LMS Virtual.Lab. The link to LMS Virtual.Lab is invaluable in investigating ways to reduce the vibration and noise of motors.
Linking to LMS Virtual.Lab
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SPEED Link
SPEED-IMD Link/SPEED-BLDC LinkThe analysis models created in SPEED, a universal motor design tool developed by the University of Glasgow can now be imported into JMAG. The concept design can be undertaken quickly using SPEED through he benefits of the magnetic circuit method, and then a more comprehensive evaluation can be performed seamlessly using the highly accurate analysis capabilities of FEM.
The geometrical and settings information is imported into JMAG-Designer by simply specifying the settings indicated in the dialog box displayed by selecting GoFer in the SPEED tools menu after running the SPEED analysis. A subsequent analysis can be run by specifying additional settings, such as the conditions necessary for FEM, in JMAG-Designer. The motors that are currently supported are the BLDC (brushless motor) and IMD (induction motor).
SPEED Link
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Parametric FeaturesThe actual design process demands designers are able to run various evaluations and make decisions extremely quickly. An analysis with multiple cases can be run efficiently. A primary example is a sensitivity analysis for design parameters. JMAG-Designer has strengthened the parametric features with a case control and graph manager previously, and this version is no different reinforcing them with the following features.
Parametric FunctionsThe parametric function is a feature to increase the workability of the parametric analysis that is beneficial to JMAG-Designer. Functions can now be defined in addition to the numerical and discrete values that have been available in the case control for the parametric analysis by defining a constant and an equation for the parametric function. The frequency (Hz) of the U, V, and W phases for the power supply can be synchronized by simply changing the common frequency (Hz), A, by setting the common frequency (Hz) to A = 120, and then specifying U=2πA+0, V=2πA+120, and W=2πA+240 if applying a 3-phase power supply using a sinusoidal function.
Parametric Functions
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Reinforced Analysis TemplatesThe analysis templates used to share information, such as the condition settings, material properties, and post-processing as a template have been reinforced. The succession of settings such as conditions were originally defined by the names of parts in JMAG-Designer, but now the succession of condition settings to faces and edges can be maintained by configuring data called a set. As a result, the advantage of analysis templates has been greatly improved.
Reinforced Analysis Templates
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New JMAG-RT FeaturesThe features for JMAG-RT, a solution for model based design, have been further enhanced based on the requests from our users.These enhancements are currently only supported in Simulink, but support for PSIM is coming soon.
Account for Iron Loss in motor ModelsDrive methods, such as flux weakening control are used and the evaluations of the control are becoming highly developed because PM motors demand high efficiency over a wide drive region. The iron loss can now be taken into account for PM motor models to meet the increasing needs for more highly developed investigations. An interface has also been added to specify settings for the coil and magnet temperature as well as increasing the capabilities to simulate models that can reflect the output.
The torque and the inductance were originally extracted when creating JMAG-RT models, but now a process has been added to calculate the iron loss using the analysis results. The iron loss for the behavior model is not simply expressed by the series/parallel resistance, but independent technology for high fidelity JMAG-RT models offers both higher speed and higher accuracy.
Analysis example Vector Control Simulation of an IPM Motor Including the Iron Loss and Temperature of the Operating Environment(Coming Soon)
PM motor Model
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Utilizing the New SR Motor ModelSR motors are gaining attention as motors that do not use permanent magnets. This version of JMAG adds an SR motor model to the JMAG-RT system. SR motors have large spatial inductance variations and they are strongly affected by nonlinear materials. These motors are extremely difficult for the drive control because the torque fluctuations are extremely severe. The highly accurate SR motor model is very beneficial for investigating ways to improve efficiency and reduce the torque variations using the control of the SR motor.
Analysis example JAC162 - Drive Simulation of an SR Motor Using a Control Simulator and the JMAG-RT System
SR Motor Model
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Utilizing the New Induction Motor ModelInduction motors are a mainstream motor still widely used in the market today because they are easy to control and they have a robust structure. The demand for higher performance induction motors is increasing resulting in a greater need for magnetic field analysis related to these motors. An induction motor model has been added to JMAG-RT to address this demand.
Analysis example JAC166 - Vector Control Simulation of an duction Machine Using a Control Simultor and the JMAG-RT Stystem
Induction Motor Model
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JMAG-RT ViewerEfficiency maps are advantageous as a measure to evaluate the total performance of motors. However, the procedure to create efficiency maps is very laborious whether using actual measurements or analysis. The JMAG-RT Viewer has been developed to generate efficiency maps and speed-torque curves using the JMAG-RT model as a fundamental part of model-based design solutions.
An efficiency map can be generated quickly by specifying the drive condition and control information for the JMAG-RT motor model (*.rat) using the JMAG-RT Viewer. The overall characteristics of a motor lay are very accessible because the Ld/All and loss can also be displayed as a map.
The JMAG-RT Viewer can be used to confirm the aspects of the motor model created by the user as well as be used by the control designers and motor users to confirm the motor data that they are given. The JMAG-RT Viewer is also free software with license authentication.
Analysis example JAC165 - Creating an Efficiency Map for an IPM Motor
Speed versus torque
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Efficiency map
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New Features Added to JMAG-RT Library ManagerThe features of the JMAG-RT Library Manager have been enhanced.The RTT files created in versions earlier than JMAG-Designer Ver.10.5 can be converted to the JMAG-Designer Ver.10.5 format.This allows older RTT files to be evaluated using the JMAG-RT Viewer.The value of distributing JMAG-RT models has further benefits by including more information in the RTT file by including more information in the header and comments.
A feature to create RTT files from user data has also been added.A behavior model equivalent to an Ld/Lq model can be created by specifying the current dependency of the inductance.
Reinforced JMAG-Bus FeaturesJMAG-Bus is a framework customizing the analysis process which is capable of being shared between many people that can be used without installing or learning any of the operational procedures used in JMAG This version of JMAG-Bus has improved the efficiency of the analysis process by adding new features and enhancing the performance of JMAG-Bus.
Enhanced JMAG-Bus FeaturesThe three features below have been added to enhance the performance of JMAG-Bus. These innovations have made the analysis process even easier than before.
- User management features:
Privileges can now be specified for each user in JMAG-Bus.
- Folder to save analysis data:
The folder to save analysis results can now be sequentially changed.
- Installer support:
A JMAG engineer previously needed to perform the installation of JMAG-Bus on site to configure the system, but now an installer has been developed for the setup process.
Enhanced JMAG-Bus Features
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Other
Snapshot AnalysisThe snapshot analysis is a feature to obtain solutions rapidly by separating each step of an analysis with multiple steps to multiple machines over a network. The snapshot analysis is beneficial for models that are not affected by transient aspects requiring information to be passed from step to step, such as cogging torque analyses.
Snapshot Analysis
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Sizing Feature for JMAG-Express GeometryThe popular motor design tool JMAG-Express now has a geometrical sizing feature. Conventionally users needed to specify settings such as the dimensions and drive conditions when using the basic templates, but now the sizing feature recommends geometry and drive conditions by simply specifying the minimum desired output of the motor. Of coarse more specific geometry and drive conditions can be obtained by increasing the amount of information that is specified.
JMAG-Express can now be used as a building block to examine the geometry and drive conditions even for users that are not versed in motor design.
Sizing Feature for JMAG-Express Geometry
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