Experimental investigation of vibro-acoustic noise analysis in the switched reluctance motor through transient model-based multiphysics analysis for electric vehicles applications

• Published in: Applied acoustics Vol. 220; p. 109957
• Main Authors: Saiteja, Pemmareddy, Ashok, Bragadeshwaran
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15-04-2024
• Subjects: Electric vehicles; Model analysis; Multiphysics analysis; Switched reluctance motor; Vibro-acoustic noise analysis; Multiphysics analysis; Electric vehicles; Switched reluctance motor; Model analysis; Vibro-acoustic noise analysis
• ISSN: 0003-682X; 1872-910X
• DOI: 10.1016/j.apacoust.2024.109957

•The vibro-acoustic noise analysis of SR motors in electric vehicles is investigated.•Elaborated the significance and role of transient model-based multiphysics analysis in SR motor.•Multiple vibro-acoustic noise sources of EM forces were extensively investigated and analyzed.•The maximal vibration and noise level is observed in the frequency range of 250 and 1250 Hz in SR motor.•The experimental results are validated through simulation using model analysis of SR motor.
The SR motor is acquiring popularity due to its dynamic characteristics such as higher power, torque, and efficiency. Even though, Vibro-acoustic noise is a significant issue in SR motors, which are caused by radial electromagnetic forces. This research adopted a novel methodology to investigate the various vibro-acoustic noise sources to enhance the performance of real-time SR motors. This methodology integrates transient model-based multiphysics and experimental analysis to predict the vibro-acoustic noise sources in SR motors. A multiphysics model incorporates not only the EM and acoustic fields, but also the structural geometry and variably distributed EM forces, to predict and analyse the EM vibro-acoustic noise in SR motor. The experimental results reveal that the maximum vibro-acoustic noise amplitudes are observed at 150, 240, 570, 920, 1210, and 1650 Hz due to uneven EM forces. To verify the presence of experimental vibro-acoustic noise levels at different frequencies, a transient model-based multiphysics analysis is investigated. The vibro-acoustic noise distribution trends seen in the simulation are consistent with those seen in the experiments. Finally, based on the simulation and experimental results revealed that EM forces, load-current changes, flux density, torque ripples are the significant reasons for greatest vibro-acoustic noise levels in the SR motor.