Last Updated 2013-07-12

5th Seminar on Advanced Computational Electromagnetics

Event Overview and Introduction / Registration / Program / Leaflet(PDF, 117KB)

Environmental problems and energy problems facing Japan in recent years have made energy-saving demands on electric devices increasingly severe. In particular, continuous improvements are expected in efficiency for motors, which are said to account for more than half of all energy consumption. In these circumstances, high efficiency is becoming not just an added value, but rather an essential feature.

In order to improve motor efficiency, vigorous research and development has been ongoing since at least 20 years ago, focused on mid-sized machines in HEVs and air-conditioners, to say nothing of the many years of hard work on large motors. Thanks to these efforts, motor and motor drive technologies have made great strides.

Computer techniques for electromagnetic field analysis technologies used in motor design have been incorporated in this forward process, and electromagnetic field analysis has become an essential technology for advanced motor development. In particular, loss analysis for the evaluation and explication of loss, and finally the minimization of loss, has contributed greatly to motor efficiency.

At this point, however, analysis technologies themselves have become an issue.

As motors evolve and further loss reductions are demanded, the need for greater precision has also increased, and current analysis technologies have become inadequate in some cases. New analysis technologies are needed.

In response to this, new methods for combination with material measurement have been developed and are proving useful in the field of analysis technology research.

For this seminar, we have invited top members from various fields to give presentations and indicate demands for loss analysis in motor development in the future, as well as to explain cutting-edge loss analysis and evaluation methods currently under development. We also hope these explanations will be a starting point for discussion of the future direction of the field and thus help to show where it is heading.

Non-JMAG-users are also welcome to attend.

*There is a limit to the number of attendees, so please register as soon as possible.

Event Overview and Introduction

Organizer JSOL Corporation
Dates July 23,2013 13:30-20:00
*There will be a small social gathering starting at 18:10.
1-8-1 Marunouchi, Chiyoda-ku, Tokyo
Expected number of participants 200
Target audience JMAG users
Those considering starting to use magnetic field analysis software
Those involved with electromagnetic field analysis
Registration Fees Free
Application deadline July 16, 2013


Copy the content from the below page into an email to apply.
*Applications from other companies working in the same field or persons connected thereto may be declined.
*Any information you enter will not be used for any purpose other than organization of this seminar and to provide you with information.

We have stopped accepting applications because the seminar has reached full capacity.
We wish to thank all of those who applied.

July 11, 2013


This seminar will be held in Japanese. All written materials will be in Japanese.

Time Program
13:30-13:40Opening ceremony
13:40-14:20A direction of the future motor development and requests for the motor analysis technique.:
Prof. Kan Akatsu, Associate Professor, Faculty of Engineering, Electric Engineering, Shibaura Institute of Technology

This presentation estimates a direction of the motor future development and the required motor analysis techniques matched with the development are pointed out. The background of this estimation is based on a request of the shorter development term due to the necessity of the consumption energy reduction, the rare metal crisis and the technical progress in the developing countries. Adding that the developing machine type becomes various, not only PMSM but also IM, Syn.RM and SRM, the multi physics analysis including the stress analysis, vibration analysis and so on is also required. From these trends, the presentation shows the road map of the motor development, the future analysis techniques are requested based on the recent analysis techniques.

14:20-15:00Property Evaluation of Magnetic Materials and Recent Progress of Their Modelling Methods:
Prof. Kouji Fujiwara, Department of Electorical Engineering, Faculty of Science and Engineering, Doshisha University

In order to achieve the higher accuracy of numerical simulation of electromagnetic fields, property evaluation of magnetic materials and their modelling methods are indispensable. Practical discretization methods of partial differential equations governing spatial distribution and time variation of electromagnetic fields have been proposed. However, material modelling still has hard problems to be solved. In this presentation effects of several material properties such as anisotropy, hysteresis and stress independence on machine characteristics are reported.

15:00-15:40The Subjects of Large-scale Loss Analysis:
Dr. Haruyuki Kometani, Advanced Technology R&D Center Electromagnetic Systems Dept., Mitsubishi Electric Corporation

The examples of the large-scale loss analysis in large-sized rotating machines are shown, such as the analysis of eddy current loss generated in the end region of large generators. And constructions of the analysis system which is needed when analyzing are shown. Moreover, the problems for putting large-scale analysis in practical use are shown.

16:00-16:40The present conditions and problem of the loss analysis in the PM motor:
Mr. Akio Yamagiwa, Chief Researcher, Environmental Technology Laboratory, Daikin Industries, LTD.

In IPMSM model suggested in the Institute of Electrical Engineers of Japan and PMASynRM which was studied by Li-EAD project of NEDO, We compare the experiment with the result of the loss analysis using JMAG and introduce the present level of the loss analysis. In addition, We will introduce the problem of loss analysis becoming necessary for practical use in future.

16:40-17:20Recent Development and Application Technology of Non-oriented Electrical Steel Sheets:
Mr. Hiroaki Toda, Senior Researcher, Steel Research laboratory, Electrical Steel Research Dept., JFE Steel Corporation

Recently, there has been a growing need for improving motor efficiency in response to environmental problems such as global warming and energy problems. This leads to a strong demand for further improvement of non-oriented electrical steel sheets. In this presentation, a newly developed high flux density non-oriented electrical steel (JNP Core) and its evaluation results of the chracteristics in induction motor are reported after the introduction of conventional electrical steel sheets.
Motor cores are often subjected to compressive stress by heat shrinking etc. It is well-known that material iron loss deteriorates largely by compressive stress. It is effective to reduce material magnetostriction in order to suppress the deterioration of iron loss due to compressive stress. Therefore, 6.5% Si steel sheets shows the lowest deterioration ratio of iron loss under compressive stress because the magnetostriction is almost zero. Furthermore, Si-gradient steel that has 6.5% Si content in the surface layer also exhibits a low deterioration ratio of iron loss under compressive stress.

17:20-18:00Taking on JMAG:
Dr. Takashi Yamada, JSOL Corporation
18:10-19:50Social gathering

* The contents of the program are subject to change without notice.

Cancellation of the seminar

The seminar may be cancelled or the date changed due to sudden illness of the presenters, accident, transit strike, typhoon, earthquake, or other reasons. We ask for your understanding. We will contact you again in such cases.

Cancelling your application

If you should need to rescind your application, please do so at least 5 business days before the day of the seminar.


Please use the following email address to contact the JSOL Corporation Secretariat.

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