Introducing JMAG-Designer Ver.24.0

14 January 2025 / Last modified at 21 January 2025

In January 2025, JMAG-Designer Ver. 24.0 was released.

JMAG is being developed to automate design. To this end, Ver. 24.0 has even more improved functionality.

This section picks up on the functional improvements and new features in Ver. 24.0.

Now that the design variables for optimization can be treated as discrete values, the obtained optimal shape can be used directly in the design. For example, in continuous optimization, rounding the number of coil turns to a whole number could result in a case in which the line-to-line voltage constraint is exceeded, but by using discrete optimization, optimization can include design variables that are limited to discrete values by standards and other factors. This improves design efficiency and smoothes the design process.

Vibration calculations with transfer functions speed up vibration evaluation at the system level. Specifically, the transfer function shortens the vibration analysis and allows for fast minimization of gearbox vibration due to the electromagnetic forces of the motor, using the motor dimensions as variables. This allows for an early design proposal in which system-level vibration is taken into account, preventing rework in the design process.

Optimization processing time for multiple concurrent executions has been reduced. Specifically, improvements in internal processing have increased distributed processing efficiency from 74% to 77% at 1,000 concurrent executions and from 60% to 66% at 2,000 concurrent executions. This allows more efficient use of computational resources and speeds up the design process.

MPP parallel support for the direct method reduces analysis time even when the convergence of the ICCG method is poor. Specifically, in large-scale calculations of AC losses, the poor convergence of the ICCG method has resulted in long computation times. However, by enabling the use of MPP in the direct method, the calculation time is no longer affected by the convergence of the iterative method, and the calculation time was reduced from 77 hours to 2 hours for the motor model used for verification. This greatly streamlines the analysis process and shortens the design cycle.

Password management of JMAG-RT models allows for more secure model distribution. Specifically, the creator of a JMAG-RT model sets a password and usage deadline in JMAG-RT Viewer, and the control designer can use the model by entering the password received from the creator. This prevents models from being deployed for unintended purposes or to unintended users, and allows for proper and more effective operation of the models.

We hope you will take advantage of the new JMAG.

What is JMAG-Designer Ver.24.0 ? Upd

INDEX

  1. Support discrete values of design variables in optimization
  2. Vibration Calculation using Transfer Function
  3. Reducing Optimization Calculation Time
  4. MPP Parallel Support for Direct Solver
  5. Password protection of JMAG-RT model

1. Support discrete values of design variables in optimization

Optimization can be performed by including design variables that are restricted to discrete values to comply with industrial standards or manufacturing tolerances.

Distribution of optimization solutions in the plane of the number of turns and line voltageDistribution of optimization solutions in the plane of the number of turns and line voltage

Rounding the number of coil turns to an integer value for designs obtained by continuous optimization could break the constraint that the line voltage must be less than 600 (V). By employing discrete optimization, manufacturable designs can be obtained while validating the constraint.

2. Vibration Calculation using Transfer Function

Fast evaluation of the vibration at the system level.

Vibration evaluation of the EV powertrain with the transfer functionVibration evaluation of the EV powertrain with the transfer function

Evaluation of the vibration of the EV powertrain for the electromagnetic force on the motor. Using the transfer function, the calculation is 20 times faster to obtain the similar result with the conventional approach using the FEA simulation for the vibration analysis.

3. Reducing Optimization Calculation Time

Reduce optimization time by 6% compared to the previous version when running 2,000 simultaneous jobs.

Improving Distributed Processing PerformanceImproving Distributed Processing Performance

Due to improvements in internal processing, the distributed processing efficiency has improved from 60 (%) to 66 (%) when the number of simultaneous job is 2,000.

4. MPP Parallel Support for Direct Solver

Reduce analysis time when ICCG convergence is not good.

Speedup of AC Loss CalculationSpeedup of AC Loss Calculation

In the calculation of AC loss, the convergence of the iterative solver (ICCG) may not be good, and it requires a long calculation time. Due to the MPP support of the direct solver, the calculation time is no longer affected by the convergence of iterative solver. For this motor model, 77 hours are reduced to 2 hours.

5. Password protection of JMAG-RT model

Distribution of JMAG-RT model is now secure with the password protection.

Distribution of JMAG-RT model with a password protectionDistribution of JMAG-RT model with a password protection

Engineers creating JMAG-RT models can set a password and expiration date using JMAG-RT Viewer to prevent unauthorized use and access. The control-circuit engineer can use the model specifying the password which is informed by the engineer who creates it.

The new functions and Features Upd

For details, please see the following function introduction. (PDF, 1.44 MB:  User authentication)

Introducing New Functions of JMAG-Designer Ver. 24.0 

Documents

These are created using the functions in JMAG-Designer Ver.24.0 and later. Please feel free to use them.

Fast Global Exploration

Multi-disciplinary Evaluation

Mesh

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 

After updating the server version, please switch to the V24 license file.
If you are using LM-X JMAG License Server Ver. 5.1.2 or earlier, you cannot start JMAG-Designer Ver. 24.0
Click here for more information on LM-X License Server Installer and License Update Manual（ User authentication)

LM-X License Server Installer 

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.24.0.

Introducing JMAG-Designer Ver.17.0 – Ver.24.0

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