Evaluation of the Stress Grading System of Medium Voltage Motors Fed by Adjustable Speed Drives Under Elevated Ambient Temperatures
Bibliographic record
Abstract
Today's stress grading system (SGS) used in medium voltage and high voltage motors is a combination of SiC based stress grading tape (SGT) and conductive armor tape (CAT). SGS., also identified as the corona protection system., has been developed to have good field grading properties and low temperature rise at operations under normal power frequency voltages. However, a converter voltage containing pulses with short rise time and high repetition frequency will affect the temperature distribution along the SGS. The available length and thickness of CAT and SGT, conductivity of CAT, conductivity/nonlinearity of SGT, are parameters that can be adjusted for effective stress grading systems. This paper presents an optimization strategy for the CAT length to reduce temperature rise along the end winding region for motors operating in elevated ambient temperatures.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".