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NVH Aspects of Electric Drive Unit Development and Vehicle Integration
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 05, 2019 by SAE International in United States
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The automotive industry continues to develop new powertrain and vehicle technologies aimed at reducing overall vehicle-level fuel consumption. Specifically, the use of electrified propulsion systems is expected to play an increasingly important role in helping OEM’s meet fleet CO2 reduction targets for 2025 and beyond. This will also include a strong growth in the global demand for electric drive units (EDUs).
The change from conventional vehicles to vehicles propelled by EDUs leads to a reduction in overall vehicle exterior and interior noise levels, especially during low-speed vehicle operation. Despite the overall noise levels being low, the NVH behavior of such vehicles can be objectionable due to the presence of tonal noise coming from electric machines and geartrain components as well as relatively high shares of road/wind noise. In order to ensure customer acceptance of electrically propelled vehicles, it is imperative that these NVH challenges are understood and solved.
This paper discusses various aspects of the EDU NVH development process. This will include a discussion of the NVH target cascading methodologies for EDUs, followed by a description of the EDU development and vehicle NVH integration process. Utilizing examples, specific aspects of EDU design to assure acceptable NVH behavior from the EDU will be discussed. The use of advanced simulation techniques for electric machine noise as well as geartrain-related noise will be demonstrated using examples. Finally, aspects of EDU “source” noise/vibration measurements and integration into the vehicle to assure refined vehicle-level NVH behavior will be illustrated using examples from relevant case studies.
CitationWellmann, T., Tousignant, T., Govindswamy, K., Tomazic, D. et al., "NVH Aspects of Electric Drive Unit Development and Vehicle Integration," SAE Technical Paper 2019-01-1454, 2019, https://doi.org/10.4271/2019-01-1454.
- Prof. Dr.-Ing. Stefan Pischinger 2018
- Janssen , P. , Hellenbroich , G. , and Lahey , H.-P. Next Gen Electric Drive Unit for Passenger Cars and Light Duty Trucks Stuttgart FKFS 2018
- Janssen , P. , Hellenbroich , G. , and Lahey , H.-P. 2018
- Wellmann , T. , Govindswamy , K. , and Tomazic , D. Impact of the Future Fuel Economy Targets on Powertrain, Driveline and Vehicle NVH Development SAE Int. J. Veh. Dyn., Stab., and NVH 1 2 428 438 2017 10.4271/2017-01-1777
- Rosplesch , A. , Steffens , C. , Janssen , P. , and Hellenbroich , G. NVH Aspects of an Electric Drive Unit Aachen Acoustic Colloquium (AAC) 2018
- Eisele , G. , Angermaier , F. , Genender , P. , and Wolff , K. Systematic Concept for Definition of NVH Targets for Vehicle Subsystems and Components Aachen Acoustic Colloquium Aachen 2011
- Tousignant , T. , Govindswamy , K. , Stickler , M. , and Lee , M. Vehicle NVH Evaluations and NVH Target Cascading Considerations for Hybrid Electric Vehicles SAE Technical Paper 2015-01-2362 2015 10.4271/2015-01-2362
- Sun , Z. , Steyer , G. , and Ley , J. Geartrain Noise Optimization in an Electrical Drive Unit SAE Technical Paper 2015-01-2365 2015 10.4271/2015-01-2365
- Gieras , J.F. , Wang , C. , and Lai , J.C. Noise of Polyphase Electric Motors CRC Press 2005
- He , S. NVH Design, Analysis and Optimization of Chevrolet Bolt Battery Electric Vehicle SAE Technical Paper 2018-01-0994 2018 10.4271/2018-01-0994
- Sarrazin , M. , Janssens , K. , and Van der Auweraer , H. Influence of Inverter PWM Control Schemes on Noise Signature of Electric Powertrains ICVS20 2013
- Le Besnerais , J. , Lanfranchi , V. , Hecquet , M. , and Brochet , P. Characterization and Reduction of Audible Magnetic Noise due to PWM Supply in Induction Machines IEEE Transactions on Industrial Electronics 2010
- Steinberg , I. , Hellenbroich , G. , and Nowack , J. Efficient Transmission Kit for Battery Electric Vehicles - Trends and Solutions Wiener Motorensymposium 39
- Genender , P. , Speckens , F. , and Schürmann , G. 2011
- Eisele , G. , Wolff , K. , Hoppermanns , J. , and Genender , P. 15 Years of Transfer Path Analysis VINS in the Vehicle NVH Development - Selected Results SAE Technical Paper 2014-01-2047 2014 10.4271/2014-01-2047