Investigating the magnetic characteristics of unsymmetrical coil pair employing archimedean spiral for EV battery charging
Bibliographic record
Abstract
The position of a magnetic null in the coupling profile of a charging pad decides the operating area over which power transfer can take place. For circular charging pads, employing an Archimedean spiral, a magnetic null occurs at a misalignment distance equal to about 40% of the pad diameter (or 70% of the coil's diameter) irrespective of the coil separation. However, this is true only for identically sized (symmetrical) coil pairs. In this paper, five different unsymmetrical coil-pairs were investigated to determine their magnetic characteristics. It was found that the position of magnetic null shifts with the changing air-gap for unsymmetrical coil-pairs. By operating the coils in an unsymmetrical coil-pair at a distinct separation, a relatively wider charging zone can be obtained as compared to the symmetrical coil-pair.
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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".