November 8th, 2017

09:00 - 9:30 Welcome Coffee and Registration

9:30 - 10:00

Powersys Introduction

10:00 - 10:30

Development planning of JMAGTakashi Yamada, Jsol Corporation

JMAG is constantly being worked on to achieve highly accurate and high-speed simulation. JSOL would like to share our progress from the past year including parallel solvers to accelerate speed as well as GUI improvements aiming for increased productivity of analysis workflow. Analysis technologies we are currently focusing on and our plans for incorporation will also be covered in this presentation. Design exploration is an important topic this year. This presentation will discuss the present and future of JMAG.

10:30 - 11:00

Coffee break

11:00 - 11:30

Enhanced 3D Finite Element Method Analysis of Permanent Magnet Machines using Hpc Systems and Massively Parallel Processing, David Morisco, Bosch.

Nowadays an impressive effort is done to significantly reduce the calculation time and improve the performance of electromagnetic calculation of rotating electrical machines. With increasing availability of high performance computing and the acute interest for detailed electromagnetic evaluation, the simple 2D based approaches may have come to their limits. A comprehensive understanding and modelling of electromagnetic mechanism is required to accurately evaluate the performance of an electrical machine. Therefore, in this paper the end-winding stray field is analyzed and the additional iron losses in the end region of the stator core are presented and assessed. For this purpose, enhanced 3D finite element models, including the complex end-winding geometry, are computed on a parallel distributed high performance computing system. To emphasize the benefit of this enhanced 3-D finite element modelling, two different study case examples are shown.

11:30 - 12:00

Impact of different cutting and packaging technologies on the motor performance as well as comparison to FEM simulation, Florian Herget, Thyssenkrupp.

High efficiency of electrical motors used in industry as well as in electrical cars is getting increasingly important. New directives for industrial drives require novel motor designs with higher efficiency and new efficient motors for traction drives are developed to improve the range of electrical cars. The development time for new motors is a very important aspect for being competitive in today’s market. Therefore, the quality of FEM simulations, as well as prototyping, are very important to achieve the specifications accurately. However, FEM simulations use material properties measured under optimal conditions without any cutting effects. Furthermore, the production processes of prototypes differ from those of the series production. In order to investigate the differences, four motors with different fabrication methods were built and measured for comparison of the production influences in the final application. Additionally, FEM simulations of the motors with material data taken from laser cut and stamped samples were performed.

12:00 - 13:30

Buffet lunch

13:30 - 14:00

Impact of Claw-Pole Geometry Variations on the Performance of Machine used in Automotive Application, Pranshu Upadhayay, Valeo 

The following topic presents the influence of variation in various geometric parameters of claw-pole topology on the performance of machine used in automotive application. Due to three-dimensional flux distribution in the claw-pole topology, variation in geometric parameters of the claw-poles results into change in performance of the machine. Also because of the 3D claw-pole structure, the geometry modeling of the claw-pole machine is quite complex and requires lot of geometric operations during modeling it in a computer-aided-design software. Hence, the claw-pole machine is modeled directly in the JMAG geometry editor so as to utilize the same for finite element analysis. The geometric parameters which have been varied are claw core outer diameter, claw inside radius, claw side plate thickness and claw undercut angle, and the performance of the machine has been evaluated for the complete operational speed range from low speed of 600 rpm to high speed of 18,000 rpm. By carrying out the aforesaid variations, it has been observed that there is a significant change in torque during low speed operation.


14:00 - 14:30 Speaker 4
14:30 - 15:00

Speaker 5

15:00- 15:30

Coffee break

15:30 - 16:00

Speaker 6

16:00 - 16:30 Speaker 7
16:30 - 17:00 Last words