Influence of overvoltages in induction motors fed by PWM voltage inverters on power efficiency
Why this work is in the frame
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Bibliographic record
Abstract
Autonomous converters of the PWM type are widely used in electric drive systems, which currently constitute the main source of mechanical energy in industry. The study of oscillatory processes in motor-converter systems recently became a concern because of the problems arising from the switching of modern semiconductor devices, and their influence on the insulation of electric machines. As overvoltages in electric machines fed by a PWM converter are dangerous for their insulation, appropriate protections should be implemented. The goals of this work are the calculation of the oscillatory parameters of an AC induction motor, the development of the mathematical models for the calculation of overvoltages in any point of the winding, and the design of validation tests. We hint to solutions to minimize overvoltages and compensate for their effects, including advanced digital control strategies on FPGA chips.
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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 it