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Design Features of an Innovative Synchronous Reluctance Machine for Battery Electric Vehicles Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
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The widespread of hybrid and battery electric vehicles is vital for the future of low-carbon mobility. In this context the delivery of affordable and efficient electric motor technologies together with high energy density storage devices are key aspects to enable the mass market take-off of electrified vehicles. The objective of this paper is to provide the scientific community with the results and design features of an innovative and rare-earth free electric motor technology based on the synchronous reluctance machine concept. This technology is capable to provide sufficient power density and higher driving cycle energy efficiency compared to the current state-of-the-art rare-earth permanent magnet synchronous machines used for automotive applications. The motor is designed to be integrated within a hatchback rear driving axle vehicle, achieving the maximum energy efficiency in urban operational conditions. The paper shortly presents the motor design objectives, to then focus on the main design steps undertaken, i.e. stator winding design, electromagnetic and mechanical design, power electronics hardware design and integrated thermal design. The final motor design and its preliminary performances are presented, showing a maximum torque performance of 133 Nm at 3,700 rpm and a maximum power of 56.7 kW at 4,900 rpm, with peak efficiency above 96% around 4,000±500 rpm and 50±20 Nm, decreasing to 93-94% by including the inverter efficiency (i.e. system efficiency). The proposed motor design constitutes a step ahead in the development of a market-ready permanent magnet assisted synchronous reluctance machine technology for automotive applications, potentially enabling the developed solutions to be successfully implemented in the next generation of electric motors for hybrid and electric vehicles.
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- Johannes Gragger - Austrian Institute of Technology GmbH
- Alessandro Zanon - Austrian Institute of Technology GmbH
- Michele De Gennaro - Austrian Institute of Technology GmbH
- Jonathan Juergens - Leibniz-Universität Hannover
- Antonio Fricassè - CRF S.C.p.A.
- Luca Marengo - CRF S.C.p.A.
- Igor Olavarria - Tecnalia
- Jutta Kinder - THIEN eDrives GmbH
CitationGragger, J., Zanon, A., De Gennaro, M., Juergens, J. et al., "Design Features of an Innovative Synchronous Reluctance Machine for Battery Electric Vehicles Applications," SAE Technical Paper 2016-01-1235, 2016, https://doi.org/10.4271/2016-01-1235.
- De Gennaro , M. , Paffumi , E. , Martini , G. , Manfredi , U. et al. Experimental Investigation of the Energy Efficiency of an Electric Vehicle in Different Driving Conditions SAE Technical Paper 2014-01-1817 2014 10.4271/2014-01-1817
- De Gennaro , M. , Paffumi , E. , Martini , G. , Manfredi , U. et al. Experimental Test Campaign on a Battery Electric Vehicle: Laboratory Test Results (Part 1) SAE Int. J. Alt. Power. 4 1 100 114 2015 10.4271/2015-01-1167
- Paffumi , E. , De Gennaro , M. , Martini , G. , Manfredi , U. et al. Experimental Test Campaign on a Battery Electric Vehicle: On-Road Test Results (Part 2) SAE Int. J. Alt. Power. 4 2 277 292 2015 10.4271/2015-01-1166
- EU FP7 project SYRNEMO www.syrnemo.eu 15 10 2015
- Stegen K.S. Heavy rare earths, permanent magnets, and renewable energies: An imminent crisis Energy Policy 79 1 8 2015
- Widmer J.D. , Martin R. , Kimiabeigi M. Electric vehicle traction motors without rare earth magnets Sustainable Materials and Technologies 3 7 13 2015
- 20 June 2007 15 10 2015
- Emadi A. Advanced Electric Drive Vehicles CRC Press, Taylor & Francis 2014
- Dynamometer Drive Schedules http://www3.epa.gov/nvfel/testing/dynamometer.htm 15 10 2015
- 29 March 1970 Eur-lex.europa.eu 15 10 2015
- UNECE Website Worldwide harmonized Light vehicles Test Procedure (WLTP) https://www2.unece.org/wiki/pages/viewpage.action?pageId=2523179 15 10 2015
- IEC functional safety standard http://www.iec.ch/functionalsafety/ 15 10 2015
- ISO 26262 Road Vehicles Functional Safety http://www.iso.org/iso/catalogue_detail?csnumber=43464 15 10 2015
- ANSYS Fluent Home Page 15 10 2015
- Juergens J. , Winter O. , Fricassè A. , Ponick B. Influences of iron loss coefficients estimation on the prediction of iron losses for variable speed motors Proceedings of the IEMDC 2015 Conference 2015