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[White Papers] Claw pole alternators are used commonly as alternators for automobiles - due to the unique 3D structure and complicated flow of magnetic flux, the 3D electromagnetic field simulation with the finite element method (FEM) is effective as an evaluation method of output power prediction. Mesh models for analysis are generally created by automatically generating mesh composed of tetrahedral elements for geometry created with CAD.This paper looks at tetrahedral/pentahedral mixed mesh and aims to generate effective mesh to reduce calculation time. We compared calculation times and accuracy when analysis is run with conventional tetrahedral mesh, and investigated the effects of division size in the axis direction of pentahedral elements for mixed mesh. #JMAG #Generator #LargeScaleProcessing #Extruded #mesh

This is to announce that the Taiwan JMAG distributor Jotactic Automotive Consulting Co., Ltd. will be holding the JMAG Users Conference 2024. We look forward to your participation.

Join us on September 26th at 4:00 PM CEST for an insightful #webinar titled "Optimizing #Electromagnetic Design: Advanced Techniques for Reducing Eddy Current Losses in Magnets." Our experts will explore the latest advancements in simulation techniques, focusing on: 🔸 The comparative effectiveness of 2D vs. 3D models 🔸 The impact of segmentation strategies on eddy current reduction 🔸 The critical role of mesh quality and time-step parameters in achieving precise results This session is perfect for #engineers, researchers, and professionals in electromagnetic design and #simulation who want to optimize their systems for maximum #efficiency. Don't miss this opportunity to deepen your understanding of advanced simulation methodologies and their practical applications.  

<Released> Column: [No. 73] Butt joints and other gaps in electric machines There are several gaps and joints (or interfaces) in any electric machine, and we can classify them as follows. A. Intended gaps. The air-gap between the stator and the rotor is the most obvious example. B. Joints that lie across the main flux-path, potentially impeding the flux. C. Joints that lie parallel to the main flux-path. Ideally these have no effect unless the flux leaks across the joint into an adjacent component. D. The clearance gap or “glue line” between permanent magnets and the walls of the magnet slots in the rotor steel, especially in the interior-magnet motor. E. Joints whose character is unclear. F. The interface between laminations or punchings. ...Read more #JMAG #Column #gap

[JMAG Users Conference Proceedings] CYBERNET SYSTEMS CO., LTD. Two themes will be presented on Optimus, which supports optimal design. The first is the introduction of a solution that uses Optimus as a platform and JMAG-Ansys to carry out electromagnetic field and structural analysis. The performance evaluation of EV motors requires consideration of multiple phenomena such as electromagnetic, thermal, vibration and noise, and connecting the gold-standard tools in each of these fields will promote development efficiency. The second theme will show how Optimus can be used to integrate surrogate AI models with Optimus, including fast non-parametric optimisation. #JMAG #CYBERNET #Motor #IPM #AI #Optimization

<Released> Webinar: "Brush up on Motor Design!" has been released. [Vol.52] The 'what-if' questions of butt-joints and other gaps in electric machines There are several types of gaps and joints in any electric machine. The 52nd seminar takes a look at air gaps as well as some other typical gaps and joints. In this video, we will also consider how to include features that may be too small or too uncertain to make a reasonable mesh in a finite-element calculation. #JMAG #webinar #gap #joint

We will be run a booth (No. 17) at the ICEM 2024 (International Conference on Electrical Machines). <JMAG related presentations> - TUTORIALS September 1 16:00-18:30 Tutorial 08: Advanced Massive Simulation and Optimization of Electrical Machines for E-mobility Segment  Presenters: Takashi Yamada, Hiroyuky Sano, Shafigh Nategh – Affiliations: JSOL Corporation, SEDRIVE https://lnkd.in/gBSbJ7Fs - Oral Session Track: Intelligent Model-Based Design & Simulation Technology of Electrical Machines Targeting E-Mobility ICEM24-000415: Performance Study of Surrogate Models for Large-Scale Optimization  Presenters: Hiroyuki Sano, Ryoma Utsunomiya, Taizo Senda, Koji Tani, Takashi Yamada https://lnkd.in/gH4fpTxs #ICEM #JMAG https://lnkd.in/gKRb5mkY

[JMAG Users Conference Proceedings] ASTER CO.,LTD Issues in output density and heat generation are two of the ever-present topics in motors. This presentation introduces a case study of a motor that has been miniaturized by implementing optimization calculations that account for actual cooling conditions and JMAG heat generation analysis. #JMAG #ASTER #motor #Optimization #Thermal

[Leaflet] Many motors with hairpin coils using rectangular wires are adopted to improve slot fill factor and to reduce motor size by minimizing coil ends, and estimating current distribution and AC copper loss at high speeds is important.  Axial magnetic flux at core end causes in-plane eddy current losses which will increase with higher speeds. In addition, there are many components such as press rings and magnets that generate eddy currents, and these losses must be accurately evaluated at design phase. #JMAG #LargeScaleProcessing #MagneticField https://lnkd.in/gvmSWMDD JMAG WEB MEMBER (free membership) Registering as a "JMAG WEB MEMBER" allows you to use JMAG-Express Online (Motor Design Tool), which enables the ability to design motors online and view selected materials. https://lnkd.in/gTE2q3h5

[Leaflet] To analyze an induction motor’s maximum efficiency, the voltage and slip are parameterized to explore the combination with the highest efficiency. To create an efficiency map, the search at each rotation speed and load point needs to be repeated in the operation region.  JMAG-Designer can quickly create efficiency maps of induction motors.  #JMAG #Motor #InductionMotor #Efficiencymap #MBD JMAG WEB MEMBER (free membership) Registering as a "JMAG WEB MEMBER" allows you to use JMAG-Express Online (Motor Design Tool), which enables the ability to design motors online and view selected materials. https://lnkd.in/gTE2q3h5