Details
| Original language | English |
|---|---|
| Pages (from-to) | 365-397 |
| Number of pages | 33 |
| Journal | Vehicles |
| Volume | 2 |
| Issue number | 2 |
| Publication status | Published - 25 Jun 2020 |
Abstract
In order to achieve the European Commission’s ambitious climate targets by 2030, BEVs (Battery Electric Vehicles) manufacturers are faced with the challenge of producing more efficient and ecological products. The electromechanical powertrain plays a key role in the efficiency of BEVs, which is why the design parameters in the development phase of electromechanical powertrains must be chosen carefully. One of the central design parameters is the maximum speed of the electric machines and the gear ratio of the connected transmissions. Due to the relationship between speed and torque, it is possible to design more compact and lighter electric machines by increasing the speed at constant power. However, with higher speed of the electric machines, a higher gear ratio is required, which results in a larger and heavier transmission. This study therefore examines the influence of maximum speed on the power density of electromechanical powertrains. Electric machines and transmissions with different maximum speeds are designed with the state-of-the-art for a selected reference vehicle. The designs are then examined with regard to the power density of the overall powertrain system. Compared to the reference vehicle, the results of the study show a considerable potential for increasing the power density of electromechanical powertrains by increasing the maximum speed of the electric machines.
Keywords
- E-Mobility, electric machine design, gearbox, high-speed, powertrain design, transmission design
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Engineering(all)
- Automotive Engineering
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In: Vehicles, Vol. 2, No. 2, 25.06.2020, p. 365-397.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the Impact of Maximum Speed on the Power Density of Electromechanical Powertrains
AU - Schweigert, Daniel
AU - Gerlach, Martin Enno
AU - Hoffmann, Alexander
AU - Morhard, Bernd
AU - Tripps, Alexander
AU - Lohner, Thomas
AU - Otto, Michael
AU - Ponick, Bernd
AU - Stahl, Karsten
N1 - Supported by: Federal Ministry of Economic Affairs and Energy on thebasis of a decision by the German Bundestag.
PY - 2020/6/25
Y1 - 2020/6/25
N2 - In order to achieve the European Commission’s ambitious climate targets by 2030, BEVs (Battery Electric Vehicles) manufacturers are faced with the challenge of producing more efficient and ecological products. The electromechanical powertrain plays a key role in the efficiency of BEVs, which is why the design parameters in the development phase of electromechanical powertrains must be chosen carefully. One of the central design parameters is the maximum speed of the electric machines and the gear ratio of the connected transmissions. Due to the relationship between speed and torque, it is possible to design more compact and lighter electric machines by increasing the speed at constant power. However, with higher speed of the electric machines, a higher gear ratio is required, which results in a larger and heavier transmission. This study therefore examines the influence of maximum speed on the power density of electromechanical powertrains. Electric machines and transmissions with different maximum speeds are designed with the state-of-the-art for a selected reference vehicle. The designs are then examined with regard to the power density of the overall powertrain system. Compared to the reference vehicle, the results of the study show a considerable potential for increasing the power density of electromechanical powertrains by increasing the maximum speed of the electric machines.
AB - In order to achieve the European Commission’s ambitious climate targets by 2030, BEVs (Battery Electric Vehicles) manufacturers are faced with the challenge of producing more efficient and ecological products. The electromechanical powertrain plays a key role in the efficiency of BEVs, which is why the design parameters in the development phase of electromechanical powertrains must be chosen carefully. One of the central design parameters is the maximum speed of the electric machines and the gear ratio of the connected transmissions. Due to the relationship between speed and torque, it is possible to design more compact and lighter electric machines by increasing the speed at constant power. However, with higher speed of the electric machines, a higher gear ratio is required, which results in a larger and heavier transmission. This study therefore examines the influence of maximum speed on the power density of electromechanical powertrains. Electric machines and transmissions with different maximum speeds are designed with the state-of-the-art for a selected reference vehicle. The designs are then examined with regard to the power density of the overall powertrain system. Compared to the reference vehicle, the results of the study show a considerable potential for increasing the power density of electromechanical powertrains by increasing the maximum speed of the electric machines.
KW - E-Mobility
KW - electric machine design
KW - gearbox
KW - high-speed
KW - powertrain design
KW - transmission design
UR - http://www.scopus.com/inward/record.url?scp=85101178485&partnerID=8YFLogxK
U2 - 10.3390/vehicles2020020
DO - 10.3390/vehicles2020020
M3 - Article
VL - 2
SP - 365
EP - 397
JO - Vehicles
JF - Vehicles
IS - 2
ER -