Solutions for Model-based Design in JMAG
One of the solutions for model-based design provided by JMAG is JMAG-RT. The origin of the name steams from the goal of "support for JMAG in Real Time Simulations," which is the ideal for model-based design.
JMAG is capable of obtaining highly accurate magnetic field analysis results for electromechanical machines. Therefore, it has been conventionally used as a tool to further the designs created by the electromechanical engineers.
However, electromechanical machines, such as motors and transformers, start to operate only after power is supplied by a drive circuit and the relationship between devices cannot be ignored. For this reason, the electromechanical design needs to be shared with the circuit and system designers.
JMAG-RT was developed as a tool to transform the analysis results into a highly accurate model to provide a solution to share this information.
For example, conflicting objectives including miniaturization, higher output, higher efficiency, higher quality, better control, and lower costs are required for motor development. This means that the nonlinear region of the magnetization characteristics have to be used resulting in the development of motors that are hard to handle from the inverter side.
The key to development is knowing the final objective of the designs because the inverter itself is also under the same demands as the motor.
Simulations using models that express the behavior like a prototype are required so that the final objective of both designs overlaps.
JMAG-RT is a tool that has already been used by many designers to convert the electromechanical machine into a model that can be utilized in the circuit/control simulator (behavior model).
JMAG-RT is evolving to satisfy the needs of the market.
Models of induction and SRM motors will be added to the PM, stepping, and linear motors that are currently available.
A feature to incorporate iron loss in the PM motor model will also be added.
Noise analysis using LMS Virtual.Lab
Induction heating analysis coupling JMAG-ABAQUS
Model-based development is not limited to the control and electric circuit. JMAG is also continually improving performance through interfaces to third-party applications allowing vibration/noise evaluations using magnetic field and structural analysis models incorporating electromagnetic force and stress as well as temperature analysis using thermal and magnetic field analysis models incorporating current heat generation and heat to be performed easily. Thermal and structural behavior models will be developed in the future to meet the needs of the market.
This report has discussed the concept of model-based design and the efforts of JMAG toward model-based design. The next report will focus on the new feature of JMAG-RT to be released at the end of June.