Evaluation of the Supporting Mounts of a Three-in-One Electric Drive Unit Using a Hybrid Simulation Model

The 3-in-1 electric drive unit (EDU) has the advantage of increasing the motor size for a larger output, and the reducer can be a compact layout designed to incorporate three key components—the drive motor, inverter, and reducer—into a single main body. This paper explores a hybrid simulation model...

Full description

Saved in:
Bibliographic Details
Published inMachines (Basel) Vol. 11; no. 11; p. 1026
Main Authors Park, So-Hee, Kim, Chan-Jung, Kang, Yeonjune
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2023
Subjects
Computer simulation
Computer-generated environments
Damping
Dynamic response
dynamic stiffness
Efficiency
Elastomers
electric drive unit
Electric drives
Electric vehicles
Finite element method
Frequency ranges
frequency response function based sub-structuring
hybrid simulation model
Powertrain
powertrain dynamometer
Simulation
Simulation models
Stiffness
supporting mount
Vibration
Online AccessGet full text

Cover

More Information
Summary:The 3-in-1 electric drive unit (EDU) has the advantage of increasing the motor size for a larger output, and the reducer can be a compact layout designed to incorporate three key components—the drive motor, inverter, and reducer—into a single main body. This paper explores a hybrid simulation model for a 3-in-1 electromechanical drive unit (EDU) and its supporting components, consisting of the gear drive unit (GDU) mount, the motor mount, and the roll rod mounts. The synthesis of these sub-components, including the 3-in-1 EDU itself, the three supporting mount modules, and a rigid-body finite element model, is presented. The dynamics of the 3-in-1 EDU were determined through an experimental modal test. Meanwhile, the dynamic stiffness and damping coefficients of the three supporting mounts were measured using an elastomer tester across a frequency range from 10 Hz to 1000 Hz. To evaluate the sensitivity of each mount, the total spectral responses of the 3-in-1 EDU were compared under a torque input, considering rigid connections for each mount in contrast to their original dynamic stiffness. Through installing a rollrod mount, the optimal rigid connection was identified to control the dynamic response of the 3-in-1 EDU hybrid model. Furthermore, simulation results for the rigid connections in each mount were validated against experimental findings, confirming that the rigid rollrod mount configuration provided the best results.
ISSN:2075-1702
2075-1702
DOI:10.3390/machines11111026