Evaluation of Switching Effect on Acoustic Noise of an Interior Permanent Magnet Synchronous Motor for a Traction Application
Bibliographic record
Abstract
<div>In recent years, the automotive industry has shown growing interest in the vibroacoustic characteristics of electric propulsion motors. Investigation of such characteristics can open avenues for motor design optimization and refined control strategies to mitigate vibration and acoustic noise in an electric motor. This article presents a comprehensive vibroacoustic analysis of a propulsion interior permanent magnet synchronous motor (IPMSM) under various current excitations generated by the power converter in combination with three different modulation schemes. To evaluate the switching effect from the inverter drive on motor noise, different simulations and processes are performed in ANSYS Workbench and MATLAB/Simulink. The multi-physics noise and vibration workflow, and sampling requirements used for the study are also presented. The simulation results, presented as equivalent radiated power (ERP) waterfall diagrams, show diverse acoustic noise signatures for the different types of excitation currents.</div>
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".