Completed Materials & Manufacturing Clean Energy

EDISON (Electric Drivetrain Integration by Simulation and OptimisatioN

In plain English

AI plain-English summary

A new electric motor design swaps expensive rare-earth magnets for cheaper ferrite ones, aiming to match the performance of current electric vehicle drivetrains while dodging fragile supply chains. Rare-earth magnets power most electric cars today because they are efficient and compact, but their supply is concentrated in a few countries and vulnerable to disruption. Ferrite magnets are abundant and cheap, yet until now they have been too weak for high-performance motors. This project tackles that gap by developing both a novel ferrite motor topology and the simulation tools needed to optimise its electromagnetic, thermal, and structural behaviour as a complete system. If successful, the work could reduce the cost and supply-chain risk of electric vehicle production without sacrificing range or efficiency. The analysis tools themselves—faster, reduced-order models that capture electro-mechanical interactions early in design—could be applied to other motor types, improving how manufacturers integrate drivetrains across the industry. A prototype will be tested to confirm real-world vehicle-level gains. The result is not a fundamental breakthrough in materials science, but an engineering advance that quietly makes electric vehicles cheaper and more resilient to produce.

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This project will reduce vehicle emissions by developing (i) a novel ferrite motor technology for a passenger vehicle application, and (ii) electro-mechanical analysis tools enabling high levels of system integration. Permanent magnet (PM) machines are most common for EV/HEV due to superior efficiency and power density. Rare-earth types are prevalent but suffer from supply chain issues, which can be removed by using ferrite PMs. Initial studies show that significant increase in efficiency and power density is possible, achieving values similar to rare-earth machines. The project will develop analysis tools to optimise system performance - efficiency, NVH, durability, thermal performance, cost, and lightweighting. The structural design of a ferrite motor is challenging, hence this topology will form the basis for the analysis tool development, with results transferable to other topologies. Co-simulation of state of the art electromagnetic, thermal and structural physics will be used to derive novel, faster, yet accurate, reduced order models which capture electro-mechanical interactions as early as possible to improve process efficiency and achieve true system optimisation. Testing of material properties (laminations and magnets) will improve the structural and electromagnetic models. The prototype drivetrain will be tested to demonstrate system interactions and vehicle-level efficiency improvements.

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Collaborative R&D

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