Drivemode – High Speed Electric Drivetrain
| Autor: | Roland Bittner, Mattias Flink, Michael Burghardt |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Electric machine
0209 industrial biotechnology Materials science business.product_category Rotor (electric) business.industry Torque density Drivetrain 02 engineering and technology Modular design 7. Clean energy Automotive engineering Power (physics) law.invention 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering law Power electronics Torque business |
| Zdroj: | Proceedings ISBN: 9783662615140 CTI SYMPOSIUM 2019-18th International Congress and Expo 9-12 December 2019, Berlin, Germany Proceedings Proceedings-CTI SYMPOSIUM 2019 |
| ISSN: | 2198-7432 2198-7440 |
| DOI: | 10.1007/978-3-662-61515-7_11 |
| Popis: | The paper investigates and suggests a high-speed electric drivetrain combining a SiC inverter, a PMSM electric machine (EM) and a 3-stage parallel axis gearbox. To reduce cost, a modular structure is applied allowing for installing several drive units into the vehicle according to power demand. The developed modular drivetrain concept is suitable for low and high-performance vehicles. To downsize the EM, i.e. decreasing the torque, the gear ratio and the rotor speed is increased, allowing the same power but from smaller packaging. Increasing the gear ratio gives a reduced mass and size, which primarily decreases the cost of the EM. To meet both increased speed and modular installation, different transmission concepts have been rated which is more likely to fulfill the requirements. To address cooling and rotor stresses and keep efficiency at maximum, the permanent magnet synchronous motor with buried magnets and dry rotor is developed. The peak efficiency goes above 96% with specific torque density of 4.9 Nm/kg. To supply the high-speed motor high frequency switching silicon carbide (SiC) power electronics is adopted. The converter can deliver 140 A continuous AC with a semiconductor switching frequency of 20 kHz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|