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Efficient Multi-Motor Powertrain Without Use of Rare Earth Resources

Project description

Data-driven design for sustainable multi-motor mobility

Electric mobility requires high-performance drivetrains resilient to supply risks for critical raw materials and aligned with sustainability goals. Supported by the Marie Skłodowska-Curie Actions programme, the EMPOWER project will develop a design methodology for multi-motor systems that avoids the use of rare-earth materials, unifying motor selection, sizing and power distribution within a single framework. By using advanced, data-driven models rather than traditional lookup tables, the project aims to unlock the full efficiency of multi-motor systems. Key objectives include validating these models via a road demonstrator and extending the framework to light-rail transport. Ultimately, EMPOWER seeks to match performance benchmarks and provide open-source tools, helping European manufacturers reduce resource dependence and improve energy efficiency across the transport, robotics and industrial sectors.

Objective

Electric mobility needs high-performance drives that are resilient to critical-material supply risks and aligned with sustainability goals. Multi-motor drivetrains distribute power across two or more machines, keep operation in high-efficiency regions, and enable dependable operation. EMPOWER develops a design methodology for rare-earth-free multi-motor systems that unifies the selection of machine topology, sizing, and power-split within one optimisation framework. Two advances enable this approach: (1) a co-design method that pairs and sizes complementary motors with gearing and power-split control, and (2) fast, physics-informed, data-driven motor models that enable large-scale system optimisation. This replaces the practice, common in current studies, of using motor-efficiency look-up tables for preselected designs, which limits the potential of multi-motor systems. The fellowship will build and validate the models, optimise a dual-motor road demonstrator, and extend the framework to per-axle multi-motor for light-rail. The target is to match or surpass an optimised neodymium single-motor baseline on road and light-rail drive cycles, reaching the benchmark with a rare-earth-free design and thus promoting sustainability. The methods generalise beyond transport to industrial automation, robotics, and aviation - domains that demand high efficiency, redundancy, and safety. EMPOWER will release open-source tools and plain-language guidelines to ensure reproducibility and uptake. The fellowship is hosted at TU Graz and with a secondment at TU Darmstadt, combining supervision in electric drives and computational electromagnetics. Results will help reduce dependence on critical raw materials, improve energy efficiency, and lower the barrier for European SMEs and equipment manufacturers to adopt multi-motor designs, while the fellow develops advanced modelling and system-level design skills ready for independent research and knowledge transfer to industry and education.

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

TECHNISCHE UNIVERSITAET GRAZ
Net EU contribution
€ 230 184,72
Address
RECHBAUERSTRASSE 12
8010 Graz
Austria
Region
Südösterreich Steiermark Graz
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)