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Technical presentations

A time-efficient method is presented that enables the calculation of EESM maps in a short timeframe, with a high degree of accuracy.

The demands on the materials and insulation systems of the winding system are constantly increasing. With electrostatic 2 and 3D JMAG simulations, the electric field strengths in the slot, at the slot exit and in the winding head can be calculated precisely and quickly.

This work demonstrates a Valeo's approach to electric machine optimization starting from the vehicle requirements level.

In this keynote presentation, we explore the challenges of simulating Axial Flux Machines (AFM) in high-speed traction drive applications using JMAG.

The study covers coupled optimization of active electromagnetic components (such as magnets, copper, and lamination) and passive electric components (e.g., insulation paper, winding coating and wedges) in electric machines

Electrical machines in traction applications are operated in inverter-fed operation over wide speed ranges. The special demands on compactness and high efficiencies of those e-machines lead to high expectations on the FEA simulation accuracies.

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.

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.

In this presentation 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.

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.

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.

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.

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.

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.

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.

EV Motors driven by voltage source inverters can suffer from a variety of different failure mechanisms.From the influence of the functional safety behavior of the entire drive system, the decrease of performance and efficiency or lead to excessive noise. This paper will provide some approaches and examples of failure simulations coupling JMAG with the inverter control reaction.

The presentation will focus on different aspects of E-motor design and control where JMAG tool-chain has a major contribution.

Market requirements and the need for reduced emissions are pushing the demand for hybrid and electric traction both in the transportation and in the off-highway sectors. Over the next years e-drive units and e-axles will continue to evolve to meet industry specific requirements like increase in power density, efficiency improvement, weight and cost reduction, reliability.

While these analyses may typically be managed by different engineers, or even different departments, there is a growing need for increased collaboration. This presentation will detail several avenues for increased collaboration of motor integration to improve NVH behavior.

By using a multiphysics approach designers and engineers are able to take in account in earlier stage the temperature dependency of the magnets which affect the final torque for an electrical motor for instance. The MpCCI CouplingEnvironment is a multiphysics enabler to extend the JMAG solution range with other advanced CFD and FEA simulations codes. Different methods will be presented to address different aspect of the design of electrical components.

The effect of temperature, stress and deformation can be accounted for through a coupled analysis using a 2D model for magnetic field analysis and structural analysis, and a 3D model for thermal analysis

In the V20.2 several improvements have been implemented concerning the efficiency maps analysis such as outputting an RT file from the efficiency map, including the magnets Eddy current loss calculation in the speed priority mode, reduce the modelling time in the conversion workflow from speed priority to accuracy priority mode.

his paper presents a detailed finite element analysis (FEA) modelling which takes into account the 3-D eddy current flow with a magnet to analyze and predict losses in a magnet with higher accuracy.

The analysis and design of large synchronous machines featuring both magnets and squirrel cage using both analytical and simulation models is presented, investigating steady-state conditions as well as start-up transients under different assumptions about the grid.

It is now possible in JMAG-Designer to enable studies with system simulations that include multiple physical phenomena and models. Multiples FEA model and JMAG-RT models can be integrated for simulating whole complex physical system, such as electrical , thermal, and control.

In recent years, the use of motors has been increasing in many industries due to environmental concerns. Especially in automotive industry, as the shift to electric vehicles (EVs) accelerates globally, the demands of developing motors has requested them to be smaller, more efficient, and safer.

A new interface specialized in motor design is now available. Designers can investigate design proposal using JMAG-Express. Modelling and calculation are performed by JMAG-Designer in accordance with input design parameters, and calculation results are displayed in JMAG-Express.

The availability of unprocessed field solution data obtained by JMAG allows for custom post-processing steps. In this sense, the export functionality of the JMAG GeneralInterface allows for another option to integrate JMAG into the automated processing chain for the motor design by providing inter alia the vector potential and the magnetic flux density along with the corresponding mesh.

In the presentation, a possible approach for easily assigning electrical winding configuration to an existing geometry is proposed: The method uses the JMAG’s built-in script editor, as well as coupling with an external software tool for winding generating.

Consequent pole (CP) permanent magnet (PM) machines have attracted considerable interest as a means of reducing machine cost through a marked reduction in the volume of permanent magnet required to meet a particular torque specification. However, the presence of a large torque ripple that can result from the CPPM structure can hinder their adoption in some applications, especially for the dominant third order torque ripple.

This explains the widespread structure-borne noise observed with sub-fractional HP machines, also reflected in extensive experimental investigations. The analyses also explore how dynamic eccentricity can counteract non-uniform magnetization and vice versa.

As shown in presentation, proper rotor design can significantly improve the risk of demagnetization allowing short-circuit in larger operation range. In addition, obtaining an acceptable level of performance and efficiency as using rare earth elements is possible to achieve. This has been enabled using advanced JMAG Optimization functions incorporating different design aspects into the optimization process.

During this presentation from Hexagon simulation experts, we will demonstrate how software such as scFLOW, Romax and Actran can be used in conjunction with JMAG to predict the electric motor performances.

In designing traction motors for electric vehicles, it is not only the performance of the motor itself that is evaluated, but also the energy consumption (electric vehicle fuel consumption) and distance while the vehicle is being driven. JMAG is capable of generating motor efficiency maps which can then be used as is to perform evaluations for drive cycles.

During this presentation from Hexagon simulation experts, we will demonstrate how software such as scFLOW, Romax and Actran can be used in conjunction with JMAG to predict the electric motor performances.

Realize high output density is required to develop EV traction motors, and conventional experience-based and existing product improvements are becoming unable to reach such higher requirement. Optimization is required to meet higher requirements, and a wide range of design space must be explored all over.

JMAG-RT enables model based development with high concurrency, allowing plant design and control design to be performed concurrently. JMAG-RT is a system which generates high-fidelity plant models (JMAG-RT models) in a system level simulation from FEA models. From system design, to ECU verification using HILS, JMAG-RT has a wide range of uses.

When designing an electric machine, there’s more to consider than just performance. What materials are used in the stator and rotor, component testing, cost at high volumes, mechanical tolerances, etc. This presentation will discuss some practical manufacturing considerations for high performance motor design.

This study projects similar efficiency improvement for a synchronous reluctance motor drive in the WLTP. Those improvements enable reduced battery size and increased range while lowering total energy consumed, and do not require hardware changes to the motor or vehicle.

In this talk we demonstrate Typhoon’s ultra-high fidelity motor drive Hardware in the Loop (HIL) simulation with seamless integration with JMAG FEA machine design software.

While these analyses may typically be managed by different engineers, or even different departments, there is a growing need for increased collaboration. This presentation will detail several avenues for increased collaboration of motor integration to improve NVH behavior.

This presentation will discuss the technology development required to achieve this step change, starting with presenting an alternative framework for the scaling of machine specific power that addresses ubiquitous misconceptions about specific torque and winding current density, continuing to identify areas of performance bottlenecks...

This presentation analyses the electromagnetic simulation of 36 slot 6 pole series hybrid variable flux machine (VFM) using JMAG software. The series hybrid VFM with series rare-earth and AlNiCo magnets shows the benefits of high-power capability at high speeds, more stable magnet operation...

We will show a typical workflow for design and testing of EV drivetrain starting with JMAG FEA motor design, followed by export of spatial-harmonic PMSM motor model from JMAG-RT into Typhoon HIL simulation environment, followed by controller Hardware in the Loop simulation in Typhoon HIL HIL404 simulator interfaced with a real Engine Controller Unite (ECU) in the loop.

This presentation deals with freeform shape optimization of electric machines using the spline-based isogeometric analysis. The optimisation workflow is integrated in JMAG via geometry import and export.

This presentation presents techniques of electromagnetic field analysis to simulate the behavior of the electric machine during driving. By means of co-simulation of finite element analysis and control/ circuit simulation, it is possible to simulate current waveforms at driving.

The increasing performance requirements on automotive auxiliary drives have led to a paradigm shift in the design of sub-fractional horsepower brushless direct current (BLDC) motors. While minimum cost used to be the primary design criteria, thereby accepting sub-optimal motor behavior, their overall performance is gaining in importance.

The topic will discuss a framework utilizing integrated modeling approach to link electromagnetics and structural stability into optimization framework, to enhance know how of the design topology, its boundaries and acceptance.

This presentation will take you through the necessary steps to create in a simple way a template that can be used to generate a specific geometry. The process can be then applied to the desired model to create your own templates in the future.

This presentation determines the existence criterion of UMF on both open-circuit and on-load conditions by analysis of air gap field and magnetic force waves, together with FE validation.

lectrification has now extended from Rail to Marine and Automotive industries. Additionally, electrified aerospace has shown the potential to be a trend in the near future. In this presentation, some of the key JMAG functions and their applicability together with some practical examples will be reviewed.

As demand of transmission efficiency goes higher, churning oil path and loss optimization is getting more important during the design stage. However, CFD simulation not only takes long computing time but also needed dedicated mesh work for better simulation results. In this paper, Moving Particle Simulation (MPS) method has applied to reduce computing time and remove mesh work.

This white paper present the process of manufacturing magnetic material laminations dedicated to electromagnetic devices impl ies some degradation of the magnetic properties compared to unprocessed material.

Power electronics systems are at the heart of many important and growing industries, from all-electric vehicles to renewable energy generation. Optimizing the design of these systems requires accurate modeling and simulation long before construction of physical prototypes.

An increasing demand for reducing cost and time effort of the design process via improved CAE (Computer-Aided Engineer) tools and methods has characterized the automotive industry over the past two decades.

Exclusive presentation of Cradle CFD v2021, the latest major release of scFLOW and scSTREAM. Built around enhanced productivity and multiphysics, Cradle CFD v2021 provides additional solutions for dealing with Fluid, Thermal, and Multiphysics challenges.

In JMAG-Designer Ver.19.1, we continue to enhance the essential of our FEA engine – mesher and solver. The analysis parameter view (APV) and dashboard which was implemented in v19.0 have also been updated for easier use. The optimization, efficiency maps, and multi-phase modeling empowers innovative product designs. More than 10 live demos of these new features will be presented in this session.

In the era of vehicle electrification, a multi-physics, whole-system approach to vehicle modeling is paramount for success. In this presentation, Gamma Technologies will show how GT and JMAG tools can be jointly used throughout the vehicle development process to solve key challenges of vehicle electrification.

This presentation will show a typical workflow for design and testing of EV drivetrain starting with JMAG FEA motor design, followed by export of spatial-harmonic PMSM motor model from JMAG-RT into Typhoon HIL simulation environment, followed by controller Hardware in the Loop simulation in Typhoon HIL HIL404 simulator interfaced with a real Engine Controller Unite (ECU) in the loop.

PSIM and JMAG combine a Finite Element Analysis tool (FEA) simulation with a power electronics simulation to allow users to do more with simulation while reducing costs and development time.

JMAG-RT generates a high fidelity plant model. Since the model is still numerically based, it can solve very quickly. And since it is based on Finite Element Model results, it will not sacrifice accuracy to achieve this calculation speed.

This presentation will present the design, analysis, and experimental testing results for a 5.67:1 Halbach rotor magnetic gearbox with a ferromagnetic back support. Using JMAG 3-D finite element analysis software the Halbach magnetic gearbox was calculated to achieve...

A novel interior permanent magnet synchronous motor design comprising alternate layers of Permanent Magnet (PM) and Soft Magnetic Composite (SMC) was developed. The fabrication of the proposed design by cold spray additive manufacturing allows to eliminate the bridges and center-posts that are usually present in laminated interior PM rotors fabricated using conventional technologies.

The performance improvements of electric machines equipped with such a winding, including a more sinusoidal airgap magnetic field distribution and the torque ripple reduction, are verified by finite element analysis (FEA) simulations carried out with JMAG.

This presentation analyzes the electromagnetic simulation of a 27 slot 6 pole variable flux machine (VFM) using the JMAG software. The VFM uses AlNiCo9 magnets in which the magnetization level can be easily changed due to lower coercive force when compared to the rare-earth magnets.

This presentation will detail the present and future of JMAG. 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.

This talk is about parasitic torques and noise in the induction motor. It’s a personal view. This technical presentation may seem rather low-key. That’s because I’m trying to encourage calm reflection of rather abstract topics, even though this is a very practical subject.

This presentation discusses the simulation of switching overvoltages on transmission lines with trapped charge, validation of EMTP line models, modeling of prestrike in statistical simulation studies and necessary simulation practices by means of validations with field tests.

In this presentation, a case of sub-synchronous oscillations between type 3 wind turbines and MMC-based HVDC transmission is demonstrated and analyzed using EMTP.

This paper discusses the calculations involved in specifying the capacitor bank and evaluates the system response to transient switching events involving the two capacitor banks. It also provides a comparison of the results of the calculations with field measurements recorded during the commissioning of the new capacitor bank.

The presentation focuses on the transient stability studies of synchronous generator influenced by power electronics devices. The objective is to compare the critical fault clearing time for different fault locations, fault conditions and different HVDC converter fault ride through control strategies.

This presentation describes the inclusion of one white-box model in EMTP using DLL code. The resulting model is highly efficient and it can be used to study internal overvoltages in the transformer during network transients, e.g. swithing operations and lightning strokes.

This presentation shows how EMTP can be used to study the stability of micro-grids with a high percentage of renewable generation, sometimes even without any synchronous generator.

The aim of this presentaion is to show the modelling process, from the identification of the MMC element parameters, to the conception of the measurement process.

In this project, a model based on reluctances network method and a mesh approach has been developed. It can reproduce the electromagnetic behavior of transformers faithfully and is configurable, automatable and compatible with EMTP. This presentaion aims at showing the context and results of this project

This case study aims at explaining the process of transformer energization with PAMSUITE, first going through the outputs of interest, then the uncertainties on influential parameters and finally explaining the results obtained

This presentation first shows the impact of wind generation on the performance of negative-sequence-based protection. In many applications, wind generators are designed to suppress negative sequence current partially or entirely.

This presentation demonstrates the impact of WP operating conditions and DFIG control system parameters on SSCI. In addition, it also shows the accuracies of various analytical tools used for SSCI problem identification will be discussed.

In this presentation, prof. Koçar shows an overview of line models and proceeds to explain the features of the new Fitter line model

This presentation is made by Abotaleb HADDADI in which he shows recent developments and challenges concerning geomagnetic disturbance simulation studies

This presentation explains the DC Grid modeling activities in Cigre WG, it gives a full description of the new Cigre DC Grid Benchmark and the implementation process of the DC Grid Model in EMTP

The popularity of Electric Vehicles (EVs) has been expanding rapidly due to government subsidies, their increased range and lower battery costs, and environmental sensitivity. SaberRD provides the unique and optimal solution for Designing, Modeling, Simulation, and Analysis of EV Battery Charging system.

Multiphysics and multi-domain approach is key when developing a new range of electrical machine. With JMAG software, we are now able to take into account in an accurate manner the most of critical development aspects when dealing with pre-design of the electrical machine, system integration, thermal constraints and noise issue.

For reasons of performance and durability, the demagnetization problem of permanent magnets is crucial. In fact, this phenomena leads to an irreversible degradation of the remanent flux density of permanent magnets. We perform using the JMAG software, a 2D finite element modeling of the electric motors coupled with the appropriate electric circuit, to analyze this phenomena.

In this presentation we will introduce the latest situation of the development of softmagnetic powder core contributing to high performance of various motors including the above-mentioned motors and examples of application to motors. The needs for automotive applications, miniaturization and higher output are increasing.

For this work a feasible approach was used, based on standardized tests of soft magnetic properties in ring specimen, to identify the material characteristics depending on the cutting edge distance. These magnetization and loss curves have then be applied to JMAG layer models of simple test geometries as well as electrical traction drives.

A case study of machine design including AC copper losses is presented which has taken into account all the aforementioned factors. The results of efficiency and thermal conditions of the machine will be the main focus. The way how we use JMAG to setup AC copper losses will also be shown, such as script operation and the winding function.

This presentation show how to accounting for AC loss in the electric machine design process using JMAG. How can we use JMAG to incorporate this into an existing design methodology for SMC-based axial flux machines and produce accurate results without excessive computational cost.

First we will see how we used JMAG to solve noise issues of an asynchronous motor. Secondly, we will present an optimization of a salient poles synchronous generator. Finally, we will explain how we used JMAG to optimize a 3.6MW Direct-Drive Superconducting Wind Turbine Generator.

In this video Prof. Miller explains the close relationship between the circuit theory, the control theory, and the field theory of electric machines. After a brief review of the nature of performance calculations, we see how the concept of the space-vector unifies the physical principles and the control methods for DC and AC machines.

Prof. Miller begins by reviewing the entire family of electric machines, uncovering the theoretical and manufacturing reasons why machines are built and used as they are today. He draws particular attention to the unity of the family of AC drives, which includes the asynchronous induction motor and the brushless PM motor as well as the AC synchronous machines.



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