Integrated Modular Distributed Drivetrain for Electric/Hybrid Vehicles

Within this project a new compact and efficient high speed 30-50 kW electrical machine will be integrated with an efficient fully SiC drive and agerabox within a powertrain traction module. The electrical machine will have a dry rotor direct liquid cooling system integrated with the coolingsystem for the SiC drive.

This traction module can be mechanically coupled with an axle of a low performance electric/hybrid vehicle, or several units could be coupled directly with the wheels for a high performance vehicle or a light-duty vehicle or a bus. Economic feasibility of mass-
manufacturing of different electric machine topologies will be studied to choose the best trade-off between performance, manufacturing cost, and efficiency in the selected performance range. Feasibility of direct drive, single stage, and two-stage switchable high speed gearboxes will be studied as well.

The resultant powertrain traction module will be an optimal trade-off between efficiency, manufacturability, and cost, utilizing newest technologies in electrical machines, power electronics, and high speed gearboxes. We will demonstrate the scalability of the solution by embedding several powertrain modules on board a test vehicle.


Yujing Liu (contact)

Professor vid Chalmers, Electrical Engineering, Electric Power Engineering

Nimananda Sharma

Doktorand vid Chalmers, Electrical Engineering, Electric Power Engineering

Jian Zhao

Projektassistent vid Chalmers, Electrical Engineering, Electric Power Engineering


AVL Trimerics

Stuttgard, Germany

BorgWarner AB

Landskrona, Sweden

Fondazione ICONS

Lodi, Italy

National Electric Vehicle Sweden

Trollhättan, Sweden

SCIRE Consorzio

Neapel, Italy

Semikron Elektronik GMBH & CO. KG

Nurnberg, Germany

Technical Research Centre of Finland (VTT)

Espoo, Finland

Technische Universitaet Ilmenau

Ilmenau, Germany

Thien Edrives GMBH

Lustenau, Austria

University of Ljubljana

Ljubljana, Slovenia

Visedo OY

Lappeenranta, Finland


European Commission

Funding Chalmers participation during 2017–2019 with 4,371,659.00 SEK

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