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Simulating and Reducing Noise Excited in an EV Powertrain by a Switched Reluctance Machine
Technical Paper
2014-01-2069
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The noise performance of fully electric vehicles is essential to ensure that they gain market acceptance. This can be a challenge for several reasons. Firstly, there is no masking from the internal combustion engine. Next, there is pressure to move to cost-efficient motor designs such as Switched Reluctance Motors, which have worse vibro-acoustic behaviour than their Permanent Magnet counterparts. Finally, power-dense, higher speed motors run closer fundamental frequency to the structural resonances of the system [1]. Experience has shown that this challenge is frequently not met. Reputable suppliers have designed and developed their “quiet” subsystems to state of the art levels, only to discover that the assembled E-powertrain is unacceptably noisy.
The paper describes the process and arising results for the noise simulation of the complete powertrain. The dynamic properties are efficiently modelled as a complete system and subjected to motor excitation (torque ripple, electro-magnetic forces and rotor imbalance). Innovation in this project comes from the speed of the modelling and analysis, so that analysis and data interpretation comes early enough in a project to be effective in reducing the noise problems. This contrasts with the approach of simulating problems that have already occurred in testing.
Actions to reduce the motor noise are explained and identified. System dynamic response identifies the operating points in which different excitation mechanisms are most problematic and steps are taken to reduce the dynamic response. Also, problematic conditions can be identified where innovative motor control algorithms are necessary.
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James, B. and Hofmann, A., "Simulating and Reducing Noise Excited in an EV Powertrain by a Switched Reluctance Machine," SAE Technical Paper 2014-01-2069, 2014, https://doi.org/10.4271/2014-01-2069.Also In
References
- Jordan Heinz , Geräuscharme Elektromotoren 1 Girardet 1950
- Donley , M. , Lim , T. , and Steyer , G. , Dynamic Analysis of Automotive Gearing Systems SAE Technical Paper 920762 1992 10.4271/920762
- Gradu , M. , et al. Planetary Gears with Improved Vibrational Behavior in Automatic Transmissions VDI Berichte Nr. 1230 1996
- Lim , T. and Houser , D. , Dynamic Analysis of Layshaft Gears in Automotive Transmission SAE Technical Paper 971964 1997 10.4271/971964
- Garcia , O. and Kargar , K. , Simulation Tool for Transmission and Driveline Systems Design SAE Technical Paper 2000-01-0832 2000 10.4271/2000-01-0832
- Ciesla , C. and Jennings , M. , A Modular Approach to Powertrain Modeling and Shift Quality Analysis SAE Technical Paper 950419 1995 10.4271/950419
- Balfour , G. et al. Control of driveline oscillations for improved refinement - from concept to production Proceedings, Institution of Mechanical Engineers, C577/040/2000 May 2000
- Rivin , E. , Analysis and Reduction of Rattling in Power Transmission Systems SAE Technical Paper 2000-01-0032 2000 10.4271/2000-01-0032
- Lianzhu , Z. , Jianmin , G. , Dengfeng , W. , Youkun , Z. et al. Mechanism and Simulation of Self-Excited Vibration in a Vehicle Transmission SAE Technical Paper 2000-01-0836 2000 10.4271/2000-01-0836
- Rust , A. et al. Investigations into gear rattle phenomena - key parameters and their influence on gearbox noise Proceedings, Institution of Mechanical Engineers, C404/001 1990
- Campbell , B. , Stokes , W. , Steyer , G. , Clapper , M. et al. Gear Noise Reduction of an Automatic Transmission Through Finite Element Dynamic Simulation SAE Technical Paper 971966 1997 10.4271/971966
- Meier , C. , Electric Drive Acoustics - A Challenge for the Mercedes B-Class International Conference Noise Optimization EV/HEV 25.-27.09.2013
- James , B. and Douglas , M. , Development of a Gear Whine Model for the Complete Transmission System SAE Technical Paper 2002-01-0700 2002 10.4271/2002-01-0700
- Platten , M. , An engineer-led approach to driveline dynamic CAE 7 th International Styrian Noise, Vibration & Harshness Congress June 13-15 2012 Graz, Austria
- Pears , J. , Smith , A. , Platten , M. , Abe , T. et al. Predicting Variation in the NVH Characteristics of an Automatic Transmission using a Detailed Parametric Modelling Approach SAE Technical Paper 2007-01-2234 2007 10.4271/2007-01-2234
- Smith , A. , Pears , J. , Platten , M. , Palmer , D. et al. Epicyclic Gear Transmission Error - The Importance of Controlling Tolerances SAE Technical Paper 2007-01-2241 2007 10.4271/2007-01-2241
- Pellerey P. , Lanfranchi V. , and Friedrich G. , Coupled numerical simulation between electromagnetic and structural models. inuence of the supply harmonics for synchronous machine vibrations Magnetics, IEEE Transactions on 48 2 983 986 2012
- Van der Giet M. , Schlensok C. , Schmulling B. , and Hameyer K. , Comparison of 2-d and 3-d coupled electromagnetic and structure-dynamic simulation of electrical machines Magnetics, IEEE Transactions on 44 6 1594 1597 2008
- Carstensen C. , Fuengwarodsakul N. H. , and De Doncker R. , Flux linkage determination for correct modeling of switched reluctance machines - dynamic measurement versus static computation Electric Machines Drives Conference 2007 IEMDC '07. IEEE International 2 1317 1327 2007
- De Doncker R. , Pulle D. , and Veltman A. , Advanced Electrical Drives - Analysis, Modeling, Control Springer 2011
- Bösing M. , Hofmann A. , and De Doncker R. W. , Universal acoustic modeling framework for electrical drives Power Electronics, Machines and Drives 2014 7th IET International Conference on 2014
- Bösing M. , Acoustic modeling of electrical drives - noise and vibration synthesis based on force response superposition Ph.D. dissertation RWTH Aachen University 2014
- Hofmann A. , Al-Dajani A. , Bosing M. , and De Doncker R. W. , Direct instantaneous force control: A method to eliminate mode-0-borne noise in switched reluctance machines Electric Machines Drives Conference (IEMDC) 2013 IEEE International 1009 1016 2013
- Coupling of Substructures for Dynamic Analysis Roy R. Craig Jr. and Mervyn C. C. Bampton AIAA Journal 6 7 July 1968
- Grunwald , A. and James , B. , System Approach to Consider NVH, Efficiency and Durability in the Optimisation of an Electric All Wheel Drive Gearbo 9th International CTI Symposium Berlin December 2010
- http://www.fp7-odin.eu/consortium.htm
- Garvey , S.D. , The Vibrational Behaviour of Laminated Components in Electrical Machines Fourth International Conference on Electrical Machines and Drives 1989
- Davis , T. , Failure Mode Avoidance 1-day course at the University of Bradford UK March 15 2007