JMAG Users Conference 2016 Abstract
Description of this year's presentations.
: Presentations with this mark offer simultaneous Japanese-English interpretation.
* The contents of the program are subject to change without notice.
* Some Presentations are given only in Japanese.
Day1: Wednesday, December 7
Development planning of JMAG|
Takashi Yamada, JSOL Corp.
I would like to talk about our challenges at JMAG. Our dream is to bring innovation to electrical machine design through the strength of simulation.
Retrospective of Electric Machines for EV and HEV Traction Applications at General Motors|
Dr. Sinisa Jurkovic, Engineering Manager, Global Propulsion System, GENERAL MOTORS COMPANY
While it is safe to say that the certainty of vehicle electrification has never been so apparent, the debate on the appropriate level of electrification and appropriate system to get there is still ongoing and it's likely to stay that way for the conceivable future. The customers are becoming more familiar and captivated with HEVs while their needs and desires in this space are evolving, hence driving the demand for a wider range of electrified vehicles including; BEVs (Chevy Spark), EREV (Chevy Volt 2), PHEV (Cadillac CT6), Fuel Cell etc. This talk focuses on electric machines for traction application, common key enabler of vehicle electrification. Specifically, we will discuss a range of electric machines designed and developed over the last decade in support of vehicle electrification at General Motors.
Special Speech 1
Model-Based Design Meets FEA Simulation - Improving Motor Control Development using High Fidelity Motor Models|
Mr. Tony Lennon, Application Manager - Motor and Power Control, Technical Marketing, The MathWorks, Inc.
Model-Based Design is a proven method of using system-level simulation to develop embedded software for motor control systems. The approach is improved with the use of higher fidelity FEA-based motor models. In this presentation, MathWorks will describe Model-Based Design, with emphasis on motor modeling and the joint efforts between JMAG and MathWorks to improve importing motor model data from JMAG FEA software into Simulink.
Prediction of Solenoid Valve Motion by Magnetic Field - Fluid Two-Way Coupled Analysis|
Yukihiro Yoshinari, Hitachi Automotive Systems, Ltd.
With more and more attentions paid to environmental problems, we are pushing forward the development of products using solenoid valves such as a high pressure fuel pump and an injector of automotive direct-injection system, and thus it has become very important to predict the solenoid valve motions before trial manufacturing.
Proposal of Electromagnetic Noise-generating Mechanism on Carrier Harmonics|
Yoshitake Kamijo, Toshiba Corporation
Recent traction motors are operated with the traction inverter to ensure the high efficient drive and variable drive speed. In such the application, electromagnetic harmonics noise by the carrier frequency from traction inverters occur the sound noise which are radiated from the motor surface. In the conventional method to reduce the noise by the carrier frequency, sometimes the career frequency distribution has been used to reduce the electromagnetic noise. Since the relationship between structural characteristics and electromagnetic noise are not clear, the noise reduction is limited by the career frequency distribution. To make it clear the relationship between the mechanical motor characteristics and career frequency characteristics, this presentation reports the results and consideration based on the investigation for the relationship between the electromagnetic-force modes in career frequency and the natural vibration modes.
COMPARATIVE STUDY OF INDUCTION MACHINE AND PERMANENT MAGNET ASSISTED SYNCHRONOUS RELUCTANCE MACHINE|
Jean-Claude Mipo, VALEO EEM
We decided to investigate two types of electrical machines for Hybrid Electric vehicle (HEV) applications, i.e. induction machine (IM) and permanent magnet assisted synchronous reluctance machine (PMA-SynRM) due to the sharp fluctuation of permanent magnet.
|Review of Model Based Design using JMAG|
We began developing JMAG-RT and capability to link with control/circuit simulations over 10 years ago. We have been developing these capabilities supporting various types of needs over the years, and now we will take a next step to model based desin.
Study on robust optimization method for cogging torque reduction accounting for manufacturing errors of the motor|
Tomoya Uchimura, Mitsubishi Electric Corporation
Cogging torque reduction is essential for the improvement of positioning accuracy and the reduction of noise and vibration in permanent magnet servo motors for industrial and automotive use.
Improvement of analysis operation using multi-case parallel calculation|
Yoshiyasu Shibayama, Kawasaki Heavy Industries, Ltd.
It is necessary to consider a number of constraints and tradeoffs in a limited period in electric machine design. As a method of considering a tradeoff, it is common to use a multi-objective optimization calculation. Since the optimization calculation is required to run hundreds to thousands of times the simulation, it may not be calculated within a limited period.
Cooperation analysis of optimization and quality engineering by modeFRONTIER and JMAG|
Manabu Kawaji, Aisin Seiki Co., Ltd.
In the design of automotive parts, both part quality and affordability are very important; and it is difficult and time consuming to fulfill these contradictory aims. Accordingly, we incorporated quality engineering in our product design to evaluate characteristics and variations; however, we had to repeat experimental designs many times and reworked them often. I would now like to introduce examples of how it has become possible to smoothly implement quality engineering designs using optimization algorithms from modeFRONTIER and magnetic field analysis from JMAG.
|Miniaturization and low noise Design of the transformer for train|
Naoki Sato, ICHIKAWA ELECTRIC CO., LTD.
High-speed rail has a small environmental impact, it has been international attention. Also it has been strongly desired to realize energy saving and comfortable train in space.
|Magnetic Field Analysis of a Transformer Using JMAG and Modeling Improvements|
Kouhei Ueda, TABUCHI ELECTRIC CO.,LTD.
Transformers have complex structures in which coils share magnetic paths; the transformer coupling rate and losses are heavily dependent on materials and geometry. This makes it difficult to accurately evaluate transformer properties during the stages prior to a trial production. Actual development is usually conducted by performing a trial production relying on the rule of thumb to determine the structure.
|Detailed Evaluation of High-frequency Transformers/Reactors|
In high-frequency transformers/reactors, the skin effects/proximity effects in the windings are to be more significant. This requires that local physical amounts such as losses must be captured accurately, but it tends to increase the size of the model greatly.
Day2: Thursday, December 8
Tips and Suggestions for Using JMAG|
Do you sometimes feel using JMAG-Designer is difficult or trobulesome? Or you might be wondering if how you can use JMAG functions more smoothly and efficiently.
Special Speech 2
Potential of FEM analysis|
Mr. Fumihiko Goto, Division Manager, Consulting Engineering Div., Hitachi Power Solutions Co., Ltd.
With the assistance of enhanced capabilities of computers and other contributing factors, FEM analysis has been extensively used for handling a broad range of objects from the understanding of physical phenomena in such as structures, fluids and magnetic fields to solving coupled problems of these phenomena. In addition, the application range has been expanding. For instance, the use of FEM analysis allows us to elicit the ultimate capabilities of things in combination with optimization methods and other means. In this lecture, the future potential of FEM analysis is discussed and the development of products for which FEM analyses have been used by the presenter so far is introduced by showing case examples and others.
Examination to Enhance Efficiency of Axial Gap Motors|
Masatsugu Takemoto, Hokkaido University
Currently, there is case where a flat shape is required for a motor in order to improve the added value of the system incorporating a motor. In this case, an axial gap motor has attracted attention. The axial gap motor of the flat shape can generate high torque because it is possible to increase the surface area of permanent magnet in the flat shape. It is important to achieve high efficiency in order to take advantage of the axial gap motor having such advantage. Therefore, it is explained with actual development cases that the aspect ratio of the axial gap motor has an impact on N-T characteristic and efficiency. Moreover, the method reducing the losses that occur in the axial gap motor is introduced with actual development cases to attain high torque and high output.
Research on an integration motor to achieve high efficiency and high torque density|
Kan Akatsu, Shibaura Institute of Technology
A concept of many power electronics for the electric machine is explained. As an example, a MATRIX motor which has many inverters in the machine is introduced. Some results such as expanding high efficiency area by the winding change over technique, the iron loss reduction by controlling the instantaneous tooth flux, and the high torque generation due to the instantaneous gap flux density control are explained.
|Verification Using Measurement and Analysis of the Impedance of Large Synchronous Motors (Tentative)|
Yusuke Kosugi, TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
In this presentation, we plan to introduce the results of comparison and evaluation through a 2D / 3D magnetic field analysis on the impedance results of a large synchronous motor using the Dalton-Cameron method.
|Magnetic field analysis of Rectifier|
Masato Asada, FUJI ELECTRIC CO., LTD.
1. Evaluating an increase in accuracy for an analysis model
JMAG implementation on K-computer and accelerating computational speed of electromagnetic field analysis (Introduction of JAMA research activities)|
Yoshihiko Sunayama (SUZUKI MOTOR CORPORATION), Japan Automobile Manufacturers Association, Inc
Japan Automobile Manufacturers Association, Inc (JAMA) is performing development works of leading-edge CAE technologies looking ahead ten years by utilizing K-computer for large scale models that can't be computed with current computers in automobile manufacturers. In this presentation, outlines of the JAMA activities and current status of development on accelerating computational speed and upsizing computational model.
STRAY FIELD ANALYSIS FOR HIGH COMPLEX 3D MODELS USING MASSIVELY PARALLEL PROCESSING FUNCTIONALITY ON HPC1 SYSTEMS|
David Philipp Morisco, Robert Bosch GmbH
During the design process of electrical machines for traction applications a consideration of three dimensional electromagnetic effects is necessary to receive accurate results.
Design and Development of Hyperloop Propulsion System Using JMAG|
Arbi Gharakhani Siraki, Hyperloop One
High speed transportation is one of the most promising areas of research that regains lots of attention in recent years mainly due to development of high energy permanent magnets, high speed/high current power electronic switches and advanced control techniques.
|Studies about condition based maintenance of drive unit for metal clad switch gear using the electromagnetic field analysis|
Kazuyuki Watanabe, FUJI ELECTRIC CO., LTD.
Needs of condition based maintenance (CBM) have been increasing in preventive maintenance service. CBM is a service for implementing the inspection and maintenance before the failure occurs.
|Electric field analysis of the Tape Lapped Joint for power cable|
Takeo Matsui, Tokyo Electric Power Company Holdings, Inc.
We had investigated the breakdowns in Tape Lapped Joints for power cables.
|Analysis of transformer circuit considered the mutual inductance|
Hirosi Goto, Toshiba industrial products and systems corporation
To get a knowledge of the leakage inductance is necessary for understanding the transformer behavior. By using circuit simulation, we confirmed the validity of self inductance and mutual inductance defined by JMAG.
Analysis of stray fields in electric motors for automotive applications|
Stephan Paul / Bernd Cebulski, IAV GmbH, Germany
The torque generated in automotive drives has to satisfy strong requirements regarding dynamic behaviour and accuracy. The state-of-the-art solution to realise the requirements is to implement a field-oriented-control (FOC). But this control needs to have accurate information about the current position and / or the current speed of the rotor. To acquire these information rotor-position-sensors are used that have an electro-magnetic-working principle. Usually these sensor are located close to the winding heads of the stator- and rotor-windings due to limited space for installation. Distortion of the sensor-signals can occur due to the electro-magnetic stray-field of the winding heads and the accuracy of the control gets worse. To avoid these problems and to implement the suitable sensor it is important to know exactly the spatial and temporal distribution of the electromagnetic field within the end-space.
Simulation based design validation and optimisation of Electrical machines for automotive applications|
Lucas-TVS is an Auto-component manufacturer and its products include Automotive alternators, Starter motors, Wiper motors, Ignition coils, etc., Some of its new products under development are Integral starter generator (ISG) for passenger cars, Traction motor for Electric Two wheelers. In present scenario where product technologies are changing faster than ever, R&D managers are constantly looking for new methods to shorten product development cycle time. Advanced computer aided design and simulation helps to achieve this to greater extent. Simulation based design validation reduces the time to make multiple prototypes and validate it. Most of the design iterations are performed in simulation and prototypes are made for optimum design. This presentation talks about how Lucas-TVS is able to reduce development time by performing computer aided simulations and addressing key challenges.
Development of Motors for SPORT HYBRID SH-AWD for New NSX|
Manabu Yazaki, Honda R&D Co., Ltd.
In recent years, the application of hybrid electric vehicle (HEV) technologies to a wide range of vehicles, from small to large vehicles and sedans to SUVs.
JMAG's responses to user proposals|
Takashi Yamada, JSOL Corp.
Many discussions take place in various locations and situations during the Users Conference. We predict that we will hear spectacular ideas and constructive criticisms for JSOL.
* The product and service names contained herein are the trademarks or registered trademarks of their respective owners.
Application for the Users Conference
We have stopped accepting applications because the conference has reached full capacity.
We wish to thank all of those who applied.
November 29, 2016