JMAG Users Conference & Workshop 2022 in France


We will be hosting the JMAG Users Conference in France.
The conference will be held over three days; the first and second day will be JMAG Users Conference, and Workshop will consist of the second day and the third day.
We will also hold training with a focus on JMAG features.
This will be a great opportunity to gain information on electromagnetic analysis technology trends, usage environments, and so on. Come join us!


Organizer POWERSYS
Dates – 2022 JMAG Users Conference
 Sep. 27 th at 9 am to Sep. 28 th at 2 pm (FREE)
– JMAG workshop
 Sep. 28th at 2.00 pm to Sep. 29th at 3.30 pm (FEES: from 1,400€)
Location Hôtel West End Nice
31 Promenade des Anglais, 06000 Nice FRANCE [MAP]  


September 27th USER CONFERENCE

9:30 am 4:30 pm Welcome Note / User Conference Introduction
10:00 am 5:00 pm Development planning of JMAG | Dr Takashi 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 detail the present and future of JMAG.
10:45 am 5:45 pm Coffee break
11:15 am 6:15 pm Keynote: Design and Control of E-Motors for E-mobility Applications | Shafigh Nategh, Polestar
The presentation will focus on different aspects of E-motor design and control where JMAG tool-chain has a major contribution.
11:45 am 6:45 pm Transient Failure Modes of IPM Motors in Electric Vehicle Applications | Bernd Cebulski, IAV GmbH
EV Motors driven by voltage source inverters can suffer from a variety of different failure mechanisms. Some of them will influence the functional safety behavior of the entire drive system. Others will compromise performance and efficiency or lead to excessive noise. Some failure modes are also accompanied by additional heat due to specific losses. The simulation of these failures incorporate specific inverter reactions as well as machine characteristics. The simulation with JMAG therefore needs to reflect the control system reaction and the transient magnetic operation of the stator-rotor parts. The paper will provide some approaches and examples of failure simulations coupling JMAG with the inverter control reaction.
12:15 pm 7:15 pm High power/torque density in trapezoidal RFPMSM (radial flux permanent magnet synchronous machines) | Alexander Stepuk, EVR Motors
This paper presents a strategy to increase power and torque density in a novel proprietary trapezoidal topology of RFPMSM (radial flux permanent magnet synchronous machines) for In-wheel and automotive applications. Comparative express 2D and 3D simulations performed to select the best formed square slot soft magnetic composite (SMC) stator. Higher fill factor of concentrated winding allowed to increase power density of machines even for their air cooling configurations, Results of sImulations were validated on in-house test-bench and demonstrated good accuracy with experiments.
12:45 pm 7:45 pm Lunch
2:15 pm 9:15 pm Electrical machine loss simulation and model validation using JMAG and MATLAB Simulink | Zoltan Nadudvari, Rolls Royce
The electrification of aircraft is playing a significant role on the path to reduce the aviation industry’s environmental footprint. The industry poses specific challenges for the development engineers due to the strict requirements and design boundary conditions. Developing an electrical drive train which meets the high safety standards, the desired efficiency and power to weight ratio requires a multidisciplinary design approach to cover all of the requirements and design aspects. In an agile environment different engineering teams often use different platforms / ecosystems (e.g. Matlab, Simcenter, JMAG) to deliver the results in time and face the challenge of real-time simulation and test data exchange between the disciplines. The aerospace industry set the highest standards to the engineer regarding the design process and also for validation and verification the design results. In RRE-HU we were able to develop a process to simulate the power electronics effect on the electrical machine at the earliest phase of the design by connecting JMAG and MATLAB-Simulink. A prototype electrical machine was built and tested and the test results – focusing on the losses - were compared with the simulation results for model variation both in case of sinusoidal and PWM load.
2:45 pm 9:45 pm Development of high performance traction motors with advanced hairpin windings Based on Jmag-Designer | Tianjie Zou, University of Nottingham
The rapidly increasing demand on power density levels of electric vehicle (EV) drive systems is pushing the boundaries of traction motor performance. Hairpin windings are becoming a popular option for EV motors due to their reduced DC losses and improved heat dissipation capability when compared to traditional random windings. The presentation will be about how JMAG is utilized for layout design and conductor size optimization of hairpin windings in a typical traction PM motor.
3:15 pm 10:15 pm Coffee break
3:45 pm 10:45 pm High-Performance PMSM Optimization Techniques Using JMAG Designer | Joël Wenger, Drivetek AG
At Drivetek AG, we have a history of designing high power density drivetrain components for motorsport applications. The design process for these efficiency and power-density driven optimizations is very evolved and highly application specific. For electric machine optimization, JMAG Designer, and especially the scripting capability, plays a crucial role in our design process. Whilst single objective parametric studies are relatively easy to set up, the complexity increases exponentially when performing multi-objective coupled optimizations with dozens of parameters. Using JMAG Designer along with our complementary toolchain allows us to consider not only static design parameters such as torque, weight or inertia, but to analyse the impact of a parameter for a given set of load points and its interaction with our design target. This includes crucial analysis like field weakening parameters, PWM current ripple analysis or skin and proximity loss analysis. To adapt to design changes and to stay agile for our clients, another crucial metric of the optimization process is the time required to optimize a given design and the number of manual inputs which is necessary for the optimization. In this presentation, we’ll show our step-by-step optimization process and give you an insight of the power of the combination using analytical models in conjunction with a highly capable FEA software such as JMAG Designer.
4:15 pm 11:15 pm Augmented inductance calculation method for characterizing reluctance machines in JMAG | Vilmos Paiss, Robert Bosch
If d-q model and FEM Coil Inductance methods are not feasible to determine the proper inductances of synchronous machines, then the differential inductance must be calculated directly. The differential self- and mutual inductances can be derived by stored energy methods. This presentation shows how the required inductances can be evaluated quickly and accurately by using a user defined post calculation script.
4:45 pm 11:45 pm Coming soon | Ahmed Shoeb, Powersys
5:30 pm 12:30 am Cocktail & One-to-one meetings


September 28th USER CONFERENCE

9:15 am 4:15 pm Optimization of Hairpin Wound E-Motors for E-mobility | Andreas Carlsson, Polestar
The presentation will focus on concept development of hairpin wound E-motors for E-mobility and showing the importance of the Jmag optimization tools in early concept studies.
9:45 am 4:45 pm Concept of PCB Motor for Fan Applications with Ferrite Core | Shahin Asgari, TU Graz
Small (up to five watt) brushless permanent magnet motors require low complexity for high-volume manufacture and cost reduction. This present aims to reduce complexity, cost, and component count of such drives by proposing a new low-cost three-phase axial flux permanent magnet motor topology for fan applications based on a PCB instead of a conventional winding. Also, a high number of pole pairs and a ferrite core are used in the structure to increase efficiency and torque density. The motor’s design is explained in detail and, for proof of concept, investigations in the no-load and load conditions are performed using finite element analyses. In addition, important design considerations are discussed. The findings confirm the practicality of the proposed low-cost and straightforward motor topology.
10:15 am 5:15 pm FEA Based Efficiency Maps for PMSM traction machines accelerated by using JMAG-RT | Hiroyuki Sano, JSOL Corporation
The conventional method for creating efficiency maps based on Look Up Table is utilized widely, however it takes several simplifications which cause accuracy issues. To evaluate high efficiency designs, using FEA directly without those simplifications is needed. It shows that the accurate FEA based efficiency map is necessary for traction applications. Also the use of JMAG-RT is effective for the reduction of time to create them.
10:45 am 5:45 pm Coffee break
11:15 am 6:15 pm Simplified power electronics for the control of a switched reluctance linear motor for hyperloop and container handling applications | Guillermo Regidor, Zeleros
The decarbonization needs of ports have produced a growing demand for electrical systems for cargo transport. Using the same technology that is being developed for Hyperloop, we propose the use of linear motors as an automated solution with zero direct emissions. In this conference we will discuss the validation in JMAG of the control and dynamics of a linear switched reluctance motor, including electromagnetic analysis of the whole machine, linear movement and power electronics simplification.
11:45 am 6:45 pm Electric Powertrain NVH Analysis in Hybrid and Electric Vehicles | Mustafa Duyar, FEV
Hybrid and Electric Vehicles are growing their market share day by day. Given the automotive OEM’s ambitious decarbonization requirements of 55% net reduction in GHG emissions by 2030 there will be no new car sold without any electrification and market share of Battery Electric Vehicles will continue to increase. Tomorrow’s vehicles bring further challenges for automotive engineers to define and refine the sound, comfort, drivability, performance, cost and energy efficiency. To address these challenges NVH Engineering takes on a new focus for Electric Vehicles with the removal of broadband internal combustion engine (ICE) noise, significant differences are found in the noise spectrum when comparing an Electric Vehicle (EV) with an ICE vehicle. EV noise is characterized by tonal harmonic noise related to the number of poles on the high speed electric motor along with the noise coming from gearbox mounted to it. This paper show how simulation activities can help to improve the NVH behavior of electric powertrains. Multi-body dynamics simulation used to predict excitations of an electric powertrain including electromagnetic forces calculated by commercial software JMAG. Seamless integration of multi-body dynamics, electromagnetics, and acoustic radiation prediction along with creation of audible sound files were demonstrated for the NVH assessment of electric powertrains.
12:15 pm 7:15 pm Sensitivity Study on Configuration of Large Scale Multi-Objective Optimization of a PMSM | Kazuki Semba, JSOL Corporation
This presentation shows the sensitivity of the feasible solution space to the configuration parameters in the design optimization of a permanent-magnet synchronous machine because the feasible solution space of large scale multi-objective optimization schemes is sensitive to the configuration. In this presentation, the development of a sufficient configuration to capture the feasible solution space properly, considering design parameter ranges, population size, and the fidelity of the FEA model is discussed.
12:45 pm 7:45 pm Lunch


TEL: +33 (0)4 42 61 02 29