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2019 | OriginalPaper | Chapter

Traction energy saving potentials for electric cars with gear shift

Authors : Oliver Zirn, Fabian Schmiel, Matthias Dellermann

Published in: 19. Internationales Stuttgarter Symposium

Publisher: Springer Fachmedien Wiesbaden

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Abstract

The efficiency of electrical traction drive chains is quite good (i.e. above 80%) in a wide operation range, while for low speed or small torque operation, efficiency falls significantly. In realistic load cycles, electric drives often have to work with efficiency levels below 60%. This is elucidated in Fig. 1 for the experimental vehicle shown in Fig. 2. In this contribution, the motor characteristics with efficiency mapping are given for the complete drive chain (battery – current converter – motor – gearboxes – wheel).

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Title: Traction energy saving potentials for electric cars with gear shift
Authors: Oliver Zirn
Fabian Schmiel
Matthias Dellermann
Publisher: Springer Fachmedien Wiesbaden
Book: 19. Internationales Stuttgarter Symposium
Print ISBN: 978-3-658-25938-9

Electronic ISBN: 978-3-658-25939-6

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-658-25939-6_23