Introducing JMAG-Designer Ver.22.0

21 Dec 2022 / Last modified at 6 Jan 2023

In December 2022, JMAG-Designer Ver. 22.0 was released.

By avoiding geometry breakdown, a trouble that occurs during dimensional optimization, 100% of the number of individuals required for optimization calculations can now be obtained. Range Finder can be used to ensure that the established geometry required for optimization calculations is obtained while properly adjusting the dimensional range. For complex geometries with 20 or more dimensional variables, optimization calculations can be performed by exploring a wide range of design space without geometry breakdown. Range Finder can be used not only with JMAG, but also with third-party optimization products.

JMAG-Express can be used to evaluate multiphysics evaluation of motors, such as efficiency maps and component temperatures, by combining pre-defined scenarios. In addition, after performing a high-speed study in JMAG-Express, you can switch to JMAG-Designer with a single click and continue working back in JMAG-Express after refining the model, such as coil ends. Ten pre-post licenses for JMAG-Express are included for each pre-post license for JMAG-Designer. This allows multiple designers to use JMAG-Express at the same time, even if they have not analyzed before.

Motor component temperatures can now be evaluated at high speed. Thermal analysis now supports 2D geometry. The time from calculation execution to display of results in transient analysis is about 5 seconds.

The calculation speed of 2D magnetic field analysis with 10,000 elements or less has been improved by more than 2 times on average compared to Ver. 21.0.

The speed of coupled magnetic and thermal parallel calculations for large models with more than 1 million elements has been improved compared to Ver. 21.0. The number of models with speedup ratios exceeding 100 times in 256 parallel calculations has increased.

The calculation speed of eigenvalue analysis has been improved over Ver. 21.0. The longer the calculation time was in Ver. 21.0, the easier it is to speed up. Data with a calculation time of 20 minutes or longer in Ver. 21.0 are faster by a factor of 5 or more on average.

We hope you will take advantage of the new JMAG.

What is JMAG-Designer Ver.22.0 ?

1. Range Finder in Optimization Calculation

Search for the range in which the geometry is feasible and acquire the feasible geometry at high speed.

Mechanism for acquiring the feasible geometry using a range finder

First, the range of CAD parameters are adjusted. When the geometry is acquired, the geometry collapses are judged at high speed by the predictive model, and only those that are satisfied are actually checked by the geometry editor.

Video for Introducing the Functions

2. Adjustment of CAD Parameters Range

Pareto front for parameter optimization advanced.

Comparison of CAD parameter range and Pareto front

A motor with 50 CAD parameters, for which it is difficult to obtain a feasible geometry, was used. Since the CAD parameter range is widened when the Range Finder is used, it can be seen that the design space is underestimated at the initial value. Looking at the results of the optimization calculation, the Pareto front is advancing by using a Range Finder.

3. Script Interface of Range Finder

Using Range Finder in optimization calculations for third-party products.

Optimization calculation flow using third-party products

In Ver.22.0, a script interface for executing only the Range Finder part is implemented. As a result, the Range Finder can be used in optimization calculations using third-party products in the same way as JMAG’s optimization calculations.

4. JMAG-Express Mode

Simultaneous evaluation of magnetic and thermal design with specifications set on a single screen.

JMAG-Express mode and JMAG-Designer mode

The JMAG-Express mode is a design-focused interface, where efficiency maps and temperatures are evaluated simultaneously. The design variables and evaluation items displayed reflect the efficiency map analysis and thermal analysis studies created in JMAG-Designer mode.

5. Speed Priority Study and Thermal Design Scenarios Support 2D Models

High-speed evaluation of temperature history of motor parts.

Comparison of temperature history and processing time

The file input/output is accelerated by changing the 3D to 2D, and the processing time from the start of calculation to the display of results is reduced from 14(sec) to less than 4(sec). This effect can be obtained for arbitrary geometries, including user-defined geometries.

Video for Introducing the Functions

6. Calculation Speed of Magnetic Field Analysis (2D Small-scale Model)

Speed up more than twice as fast as Ver.21.0.

Number of elements and speed-up ratio

In Ver.22.0, I/O of files and solver are speeded up. The overall speed is increased with models having 10,000 or less elements.

7. Calculation Speed of Thermal Magnetic Field Coupled Analysis

More than 100 times faster in many models.

Speed-up ratio for 256 parallel computing

The calculation time of one step was short, the ratio of non-parallel processing to the whole was large, and the speed-up ratio was difficult to be obtained. In Ver.22.0, the number of models with a speed improvement ratio of over 100 times has increased.

8. Calculation Speed of Eigenmode Analysis

Speeds up time-consuming eigenmode analysis.

Calculation time in Ver.21.0 and speed-up ratio

When the number of elements or or eigenmodes to be calculated are many, or when high-order elements are used, there is a issue that the calculation time becomes long. In Ver.22.0, the longer the calculation time in Ver.21.0, the faster it tends to be.

The new functions and Features

For details, please see the following function introduction. (PDF, 3.71MB:  User authentication)

Introducing to new functions of JMAG-Designer Ver.22.0  


These are created using the functions in JMAG-Designer Ver.22.0 and later. Please feel free to use them.





Motor Design: JMAG-Express

Motor Design: Circuit and Control

Module Download

The latest version of JMAG modules are available.
In addition, version information, release notes, manuals, etc. can be used. ( User authentication)

Module Download 

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.22.0.

Introducing JMAG-Designer Ver.17.0 – Ver.23.1

Articles about JMAG-Designer that have been released previously are available.