PhD in Eddy Current Reduction

Profile

PhD in Eddy Current Reduction in Automotive Permanent Magnets
University of Sheffield
- Department of Materials
Qualification Type:
PhD
Location:
Sheffield
Funding for:
UK Students, EU Students, International Students
Funding amount:
£19,312 per annum
Hours:
Full Time
Placed On:
11th March 2022
Closes:
31st March 2022
Supervisors:
  Dr Julian Dean, Prof Russell Goodall, Prof Dan Allwood, Prof Nicola Morley
Collaborator: 
Volkswagen
Based at:
 **MEMBERS ONLY**SIGN UP NOW***.
Open to:
  Candidate with a 2.1 or 1
st
class degree in a STEM discipline
This project is based at the Department of Materials at **MEMBERS ONLY**SIGN UP NOW***., and is sponsored by Volkswagen. We are seeking a candidate with a 2.1 or 1
st
class degree in a STEM discipline.
The movement to electrification of the automotive industry provides a huge opportunity to reduce the environmental impact of transport, and help meet UK and international climate targets, but it also presents technical challenges of the same scale. The core of each electric car, van or lorry is an electric machine.  Although designs can differ, the vast majority use neodymium-iron-boron permanent magnets as a key component.  When the electric machine operates, the high frequency magnetic fields produced cause eddy current losses in the magnets. This not only harms efficiency but can lead to localised heating reducing the magnet performance.  While magnet materials have a generally higher resistivity than conductors, they do carry current, thus an increase in their resistivity would reduce eddy current losses and increase the efficiency of electric machines, improving vehicle performance.
In this project we will work with VW Group Innovation to explore approaches to achieving this, and the impact it would have in real applications.  The processing of neodymium-iron-boron magnets will be explored using powder manufacturing methods, such as Spark Plasma Sintering (SPS, also known as Field Assisted Sintering Technology or FAST), with the incorporation of additional phases or pre-treatment of the powder to introduce more electrically resistive features to impede current flow.  Samples will be evaluated to understand their structure, including the grain alignment, and the electric and magnetic performance.  In parallel, finite element simulations of the material and how they behave in situ will be used to evaluate the impact of the different treatments on the motors efficiency.
The Centre for Doctoral Training in Advanced Metallic Systems is a partnership between industry and the Universities of Sheffield, Manchester and I-Form Advanced Manufacturing Centre, Dublin. CDT students undertake a 4-year doctorate with an in-depth compulsory technical and professional skills training programme. Please review our training programme, application process and full entry requirements at ****Informal enquires about the project are welcomed, either to ****
or to ****
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