Design of a 5-Phase IPM Machine for Electric Vehicles
Bibliographic record
Abstract
This paper presents the design of a 5-phase interior permanent magnet (IPM) machine for electric vehicle (EV) applications. The Nissan Leaf IPM machine is chosen as the benchmark system against which two designs are developed, 3- and 5-phase machines. The developed machines utilize the same rotor topology as the benchmark machine and adopt a 60-slot stator configuration to facilitate a short-pitch fractional-slot winding scheme. However, the machine total mass, volume, and copper utilization is maintained the same in all designs. Compared to the 3-phase IPM, the 5-phase design results in increased average torque due to improved winding factor hence improved machine power density while maintaining the same total machine ampere-turns and copper losses to ensure the same thermal performance. The study will discuss the improvement in torque and speed capability and present the comparison in loss and efficiency at the machine base speed.
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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".