Magnetic Technologies for Electric Vehicles
Oct 27th 2021 - Oct 27th 2021
Updated 15 October 2021
Please register at the bottom of this page
Electric vehicles are the future of road transport; the technologies to realise them are being developed now, with new ideas, research, products, and solutions appearing every day. This seminar will give you an idea of some of the latest thinking.
Speakers will discuss dynamic modelling and behavior of electrical steel, measurement for automotive magnets, motors, and charging, optimising e–machines, NVH, manufacturing impacts on EM performance, and more. The seminar wil be a virtual afternoon event, with presentations, discussions, and networking opportunities (UK times).
- Bilquis Mohamodhosen, Dassault Systèmes
- Graeme Finch, NPL
- Jonathan Godbehere, MDL
The programme will consist of talks with Q&A, exhibitors, and networking sessions.
Approximate Start Time: 13:00
Approximate End Time: 18:00
All times GMT
The seminar will be hosted on hopin because it offers an intuitive online conference experience. As well as the talks on the Stage, at any time you can
- visit and talk with exhibitors in the Expo,
- set up small Sessions to talk together,
- search for and Invite delegates you want to speak to through the People list,
- Chat to the whole event, a session or an exhibitor’s booth,
- Ask questions of speakers and the whole event via Chat,
- examine the event Schedule in Reception for any changes,
- try the random delegate connection of Networking (an online version of standing in the queue for coffee and talking to the person behind you).
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A new approach for dynamic modelling and dynamic behavior of electrical steels for future energy systems
by Hamed Bahmani of Durham University
Electrification of domestic, industrial and transport systems has been recognized as a promising solution to combat the global climate change and its catastrophic consequences on the planet earth. In this respect, electric motors, transformers and reactors are the key electromagnetic devices for the furtherance of the global clean technology and green energy sectors toward a zero carbon economy. Therefore optimized design of magnetic cores for high efficiency electromagnetic devices becomes more important than ever. This requires all aspects of power loss mechanism of magnetic materials and magnetic cores to be fully understood. This talk aims to provide an overview of energy loss mechanism and dynamic modelling of electrical steels for high frequency applications, e.g. electric motors. The proposed approach is in line with the magnetic hysteresis and phenomenological concepts of rate-dependent and rate-independent energy loss components of ferromagnetic materials under time varying magnetic fields.
Electromagnetic field exposure assessment during electric vehicle charging with inductive power transfer systems
by Dr Roberta Guilizzoni of NPL
(Brief details about your talk) Recent developments of high-power inductive power transfer (IPT) systems used to charge light and heavy electric vehicles pose the question of whether these systems might be unsafe for passengers and bystanders in the vicinity of the magnetic field sources represented by IPT charging stations. The European funded project “16ENG08 Metrology for inductive charging of electric vehicles” (MICEV) addressed these safety concerns by developing a metrological infrastructure, backed up by finite element model (FEM) simulations, to reliably assess the electromagnetic emissions generated by IPT systems for light and heavy vehicle charging. The three-year long experimental and numerical study carried out throughout the project involved partners from several European academic institutions, National Measurement Institutes (NMIs) and companies. The National Physical Laboratory played an important role in leading two of the project work packages and contributed to the project final deliverable, i.e. the “Best practice guide for the assessment of EMF exposure from vehicle Wireless Power Transfer systems”. This presentation will highlight the main outputs from the project and touch upon the most important aspects, highlighted in the guide, to be considered for exposure assessment around IPT stations.
Electric machine optimisation for system level design of automotive traction units
by Jonathan Godbehere of Motor Design Limited
Many avenues are being pursued with the goal of producing more powerful, efficient, cheaper and power dense electric drivetrains. An increasingly important component to this goal is the system level design. Often interactions between sub-components will oppose one another, as they compete for their share of a limited resource, such as package volume. However, the system engineer must find a compromise which leads to the best overall performance. Providing accurate, fast, multiphysics and multi-discipline design tools are critical to this design goal. In this presentation, an optimisation methodology is presented for the design of an automotive electric machine. The electric motor will be optimised across a wide design space and system level trade-offs will be demonstrated between the inverter, E-machine and transmission. This is accomplished through a workflow using Ansys Motor-CAD and Ansys OptiSLang, using surrogate models, fast multiphysics CAE simulation and ratio-based design space parametrisation.
e-NVH numerical simulation of electric drives - sensitivity study of some magnetic modelling parameters using Manatee software
by Jean Le Besnerais of EOMYS Engineering
Electromagnetic noise radiated by electric drives requires complex coupling between electrical, magnetic, structural and acoustic models.
Uncertainty Quantification - influence of manufacturing imperfections on electrical machines for automotive application
by Stéphane Clénet of L2EP, Arts et Métiers Institute of Technology
In mass production, fabrication processes of electrical machines are not perfectly repeatable with time, leading to dispersions on the dimensions which are not equal to their nominal values. These dispersions on the dimensions which changes from an electrical machine to another, are uncertain and can have detrimental effects on the behavior of the electrical machine (vibrations, efficiency…). The stochastic approach, which consist in considering model parameters as random variables, provides powerful tools to quantify the effects of uncertainties. In this presentation, we propose to illustrate on an example in automotive how the stochastic approach enables to quantify the effects of the dispersions on the dimensions on the behaviour of an electrical machine, like the rotor eccentricity and the stator core deformation. We show also how this analysis can be applied to improve the process of fabrication in order to limit the effect of these dispersions.
TBC: Measuring Motor and Magnet Performance for Automotive
by TBD of SG Technologies Ltd
Thermal Improvement Aspects of Magnetic Technologies for EVs
by Fengyu Zhang of University of Nottingham
Thermal management is one key enabler for step change in next-generation high performance motors in the field of transportation electrification. This talk will present effective thermal improvement for electrical machines and thermal modelling techniques.
Improving Electric Motor Control With Embedded Torque and Temperature Sensing
by Ryan Maughan of
Electric motors are typically controlled using 4 quadrant inverters in which the performance of the motor is controlled by measuring the current flowing to the motor and current inflow to the inverter. This method of control relies on a continuous calculation of the relationship between current flow, voltage and motor speed. In modern high efficiency motors used in highly transient applications this control method can lead to issues such as a difficult balance between the reporting of false positive errors and filtering the noisy current measurement signals from Hall effect sensors.
Dynamic measurement of motor output torque as a control parameter has not previously been possible due to the lack of a robust torque measurement solution. This presentation will discuss SAW sensors and how they can be embedded into electric motors to bring improved control and safety integrity to the system from dynamic torque and temperature measurement on the motor rotor.
Developing a high-performance ferrite magnet motor for an EV application
by Ashish Goel of Hexagon, Romax Technology
The EDISON project aims to develop a novel non-rare earth permanent magnet electrical machine for a passenger vehicle application, going through concept design, detailed analysis and testing. The project also involves developing electro-mechanical analysis tools to enable seamless system integration and optimisation of the drivetrain system performance. The prototype machine is built to be tested in a laboratory and demonstrate the performance against the benchmark machine with rare earth permanent magnets. A bespoke gearbox is developed and manufactured to understand the vibration characteristics of the machine and electric drive unit, which can then be correlated with the predictions from in-house software. This presentation covers the development of the ferrite magnet machine from concept to detailed design of the prototype, including cost and performance benefits of the non-rare earth concept.
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