The influence of rotating field direction on core losses in electrical machine laminations
Bibliographic record
Abstract
The measurements of rotational core loss in machine laminations show significant differences in losses when the rotating field reverses its direction from clockwise (CW) to counterclockwise (CCW) direction of excitation. A novel design of a magnetizing test fixture based on an electromagnetic Halbach array is used to perform measurements on a non oriented silicon steel sample of M36G29 at three different frequencies of interest to the industry 60 Hz, 400 Hz, and 1 kHz. The experimental results are fed to three types of electrical machine models, 2-pole induction machine (IM), 6-4 switched reluctance motor (SRM), and 2-pole brushless DC machine (BLDC) to investigate the effect of reversal of the rotating field direction on the delivered core loss in the stator. Results reveal that the IM experiences the highest effect of field reversing followed by the BLDCM, and then the SRM which is the least affected.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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".