Comparative Analysis of Integrated Onboard Battery Chargers for Zero Charging Torque Using PMSM with and without Neutral Point Access
Bibliographic record
Abstract
This study compares the performance of integrated onboard battery chargers (IOBCs) in electric vehicles (EVs) when using motor windings as filter inductors. Both conventional three-wire three-phase permanent magnet synchronous motor (PMSM) and neutral-point-accessible PMSM (NP-PMSM) are studied in a split single-phase charger. A charging torque minimization strategy is analysed to address the torque oscillations that are inherently generated in conventional PMSMs. Simulation studies are conducted to analyze the charging torque oscillations in IOBCs based on conventional PMSMs and NP-PMSMs. The associated power losses in the power converter are meticulously examined to gain valuable insights for selecting an appropriate IOBC configuration. The study demonstrates that NP-PMSM-based IOBCs offer significant advantages, exhibiting no charging torque and lower power loss compared to conventional PMSM-based IOBCs.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".