In August 2023, JMAG-Designer Ver. 22.2 was released.
Ver. 22.2 improves the calculation speed of 3D analysis. In addition, the calculation speed of JMAG-Express has been improved and the range of geometry usage has been expanded. This section picks up on some of the new features, including the functional improvements in this version.
Parallel calculation speed for magnetic field analysis of medium-scale models with 0.5 million to 1 million elements is improved. As a result, when compared to Ver. 22.1, the nonparallel contrast is 110 to 159 times faster for 512-parallel, 0.5 million elements model, and 142 to 195 times faster for 512-parallel, 1 million elements model.
Direct methods can be used in 3D magnetic field analysis. For models that are difficult to converge using the iterative method, such as when dealing with eddy current problems, the direct method can be used to obtain a solution in a relatively short time; in an example model using FEM conductors, the direct method completes the calculation in less than half the time of the iterative method.
JMAG-Express increases the calculation speed of thermal design scenarios. Temperature histories of components can be viewed immediately after clicking the Run button. As a result, it takes only 1 second to check the results for an 8-pole, 24-slot SPM motor and 2 seconds for an 8-pole, 48-slot V-magnet IPM motor. An 8-pole, 24-slot SPM motor ideally completes a multi-case calculation with 1 million cases in less than 3 hours.
Pre-installed scenarios in JMAG-Express can be executed using your CAD data. The setup for running a pre-installed scenario is completed by loading the CAD data for the desired geometry into JMAG-Express and following the instructions displayed on the screen. Once the settings are complete, the evaluation can be performed as is.
We hope you will take advantage of the new JMAG.
What is JMAG-Designer Ver.22.2 ?
1. Parallel Calculation for 3D Analysis
Improved scalability in highly parallel calculation.
Scalability by model size
Scalability measured in multiple models was averaged by element number. The speed-up ratio, compared to a single core, has been improved for parallelization of 256 and above. The improvement is the most significant the speed for models with 0.5 to 1 million elements.
2. Support for Direct Method in 3D Analysis
Obtain results in a stable time even for models that are difficult to converge by the iterative method.
Effects of direct method for difficult to converge calculations
When using FEM conductors, play models, and anisotropic BH characteristics, the iterative method may have difficulties to converge. In this example, the calculation time is reduced by more than half using the direct method.
3. Thermal Design Scenario Performance (JMAG-Express)
Shorten the time from parameter change to checking results.
Thermal design scenario operating windows and TAT
The time from the pressing of the evaluation button until the result is displayed (TAT) was measured on a “Cooling Jacket (Transient)” study. For that 8-pole, 24-slot PM motor with 20 steps, in Ver.22.2, the waiting time was reduced to 1 second.
4. Support of Settings When Using CAD (JMAG-Express)
User-defined shapes can be used even by beginners.
Wizard guidance when using a user-defined shape
Load CAD as a user-defined shape and run the pre-installation scenario. A wizard starts up and guides the user through the process of assigning parts and setting the magnetization direction of the magnet.
- Video for Introducing the Functions: Motor Performance Evaluation Using JMAG-Express with User Geometry
The new functions and Features Upd 7 Sep 2023
For details, please see the following function introduction. (PDF, 1.49MB: User authentication)
These are created using the functions in JMAG-Designer Ver.22.2 and later. Please feel free to use them.
- [JAC290] Design Exploration of IPM Motors, Including Evaluating Part Temperature and Stress
- [JFT182] Using User Geometry in JMAG-Express
Efficiency Map Analysis
- [JFT180] Topology Optimization Including Magnet Orientation Direction as a Design Variable
- [JAC292] Optimization of Rotor Topology and Magnet Orientation Direction for IPM Motor
Multi-case calculations using HPC environment
The latest version of JMAG modules are available.
In addition, version information, release notes, manuals, etc. can be used. ( User authentication)
Video for Introducing the New Functions
A video complete with voice audio has been prepared to offer our users a better understanding of the new functions in JMAG-Designer Ver.22.2.
Introducing JMAG-Designer Ver.17.0 – Ver.22.2
Articles about JMAG-Designer that have been released previously are available.