Analysis of the electromagnetic torque and the effective winding inductance of a surface-mounted PMSM under integrated battery charging operation
Bibliographic record
Abstract
The concept of integrated battery charger is attracting attentions these days. To design a motor drive system with an integrated charging capability, the machine windings are usually reconfigured to be used as the AC side inductors. Along with the switches from the drive circuitry, the AC side inductors form the voltage front-end to improve the power factor while charging. Most of the research work that was conducted was focused on the circuit topologies [1], [2] and the charger performances [3]. When looking into the basis, what will happen inside the machine when AC current is flowing through the machine windings? More specifically, the interactions between the electromagnetic field produced by the AC current excitation and the rotor magnetic field can cause electromagnetic torque and variations of the effective winding inductance. In this investigation, these two aspects, the produced torque and the impedance due to different winding configurations under a single-phase integrated charging operation employing a surface-mounted permanent magnet synchronous machine (SPMSM) drive system are analyzed. Experimental tests were conducted on a 21 HP, 8-pole SPMSM to verify the results.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".