Energy efficiency of electric drives

Start date 05/01/2009
End date The project is closed: 31/12/2011

The overall goal of the project is to make the transportation of persons and goods in an energy efficient way and reduce the environmental impact from transportation.

The design and efficiency of power electronic converters as well as a propulsion machine operated by one of these converters, has been investigated. Furthermore, recycling of electrical machines is investigated, resulting in guidelines for how electric machines can be designed with appropriate choices of materials, resulting in a recyclable product. Also, a distance learning course in electrical drive systems has been developed, involving most of the staff specializing in electric vehicle technology at the Department of Electrical Engineering. This is considered to contribute to a knowledge base in academia for long-term support to industry.

The complete result of the project is presented in various reports. For example, it was found that using a developed optimizing algorithm; the efficiency could be improved with almost 2 % in the US06 drive cycle.

Reports and articles from this project:

1 Rabiei, A., Thiringer T., Lindberg J., (2012) “Maximizing the Energy Efficiency of a PMSM for Vehicular Applications Using an Iron Loss Accounting Optimization Based on Non-linear Programming”, International Conference on Electrical Machines, ICEM, Marseille Sep 2012.


2 Torbjörn Thiringer, “Some notes on Electric Power Engineering for General Motors”, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011.

3 Sonja Tidblad Lundmark, “Course Compendium Part II for the course LUP 625 Electric Drives”, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011.


4 M. G. Hosseini Aghdam, and T. Thiringer, “Comparison of SiC and Si Power Semiconductor Devices to Be Used in 2.5 kW DC/DC Converter,” Proceeding of the 8th International Conference on Power Electronics and Drive Systems (IEEE PEDS'09), November 2-5, 2009, Taipei, Taiwan, pp. 1035-1040.


5 M. Grenier, M. G. Hosseini Aghdam, and T. Thiringer, “Design of on-board charger for plug-in hybrid electric vehicle,” 5th IET International Conference on Power Electronics, Machines and Drives, PEMD 2010, April, 2010, Brighton, England, pp. 563-568 .


6 Alatalo, M., S. Lundmark, and E. Grunditz (2011) “Electric Machine Design for Traction Applications Considering Recycling Aspects- Review and New Solution”, the 37th Annual Conference of the IEEE Industrial Electronics Society (IECON), Melbourne, Australia, 7-10 November 2011.


7 Xi Yang, “FEM model for a VHV machine”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2008.


8 Rasmus Andersson och Andreas Gillström, “Sensorless control of integrated starter alternator motor (ISAM) in a hybrid drive train”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2008.


9 Anders Åkerström och Samuel Andersson, ”Bestämning av ekvivalenta parametrar och verkningsgraden på elmotorer”, Göteborg, Sweden, Master thesis report, Chalmers University of Technology, Department of Energy and Environment, 2010.


10 Huang Zhe, ”OpenFOAM Simulation for Electromagnetic Problems, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2010.


11 Christian Dubar, “Design of an axial flux machine for an in-wheel motor application”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011.


12 Mehdi Javdani Erfani, “Design of a bidirectional on-board battery charger in Hybrid vehicle applications”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011.


13 Mohammad Rafiq, Mohammed Fareed, “Design and analysis of a 60 kW Dc-DC converter for hybrid electric vehicle applications”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011.


14 Christian Andersson, Mohammed Fareed, “Design of a 2.5 kW DC/DC Fullbridge converter”, Master thesis report, Göteborg, Sweden, Chalmers University of Technology, Department of Energy and Environment, 2011

Published: Mon 27 Jun 2016.