Field Weakening Operation of Open-Winding Induction Motor Dual Drives Using a Floating Capacitor Bridge Inverter
Bibliographic record
Abstract
A field weakening control scheme of open-ended winding induction motors with a floating capacitor bridge is presented. The main bridge is operated at unity power factor to maximize the output mechanical power until the floating bridge hits its maximum voltage. After which, the main bridge is operated to supply some reactive demand to extend the drive speed extension ratio to 9.2 times the base speed compared to 5 for only unity power factor operation. The maximum voltage this scheme can supply is 0.83 p.u, 0.52 p.u, and 0.17 p.u higher compared to the single inverter drive, unity power factor, and single DC-link dual inverter drives, respectively, and only 0.17 p.u lower than that of two separate DC-links dual inverter drive. The presented scheme is also compared with four field weakening control schemes, three of which are dual inverter drive schemes, in terms of maximum stator voltage, speed extension ratio, and available output power. The feasibility of the control scheme is experimentally demonstrated by performing transient and steady state analysis.
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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 | 0.000 |
| 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 | 0.001 | 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".