The development, analysis, and optimization of battery electric class-7 heavy-duty trucks equipped with multi-speed transmissions are discussed in this article. The designs of five new traction motors-fractional-slot, concentrated winding machines-are proposed for use in heavy-duty electric trucks. The procedure for gear-ratio range selection is outlined and ranges of gear ratios for three-to six-speed transmission powertrains are calculated for each of the proposed electric traction motors. The simulation and gear-ratio optimization tasks for class-7 battery electric trucks are formulated. The energy consumption of the e-truck with the twenty possible powertrain combinations is minimized over the four driving cycles and the most efficient powertrain layouts that meet the performance criteria are recommended.
Design, Analysis, and Optimization of a Multi-Speed Powertrain for Class-7 Electric Trucks
Sae Int. J. Alt. Power
Sae International Journal of Alternative Powertrains ; 7 , 1 ; 27-42
2018-04-17
16 pages
Aufsatz (Konferenz)
Englisch
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