An on-line operated near unity power factor PWM rectifier with minimum control requirements
Why this work is in the frame
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Bibliographic record
Abstract
Most PWM rectifiers use online PWM patterns which results in slow transient response. Damping resistors must be provided to avoid amplification of harmonics and current oscillations, especially during transient conditions. This results in reduced efficiency. In this paper, a current-source type PWM rectifier with online pattern generation and inherent pattern synchronization with the AC mains is proposed. The voltages across the input filter capacitors are chosen as the modulating signals. This results in a very fast starting and a much improved transient response. Also, the need of the damping resistors is eliminated due to the effective damping provided through the modulating of the capacitor voltages. Moreover, an additional phase-shifting circuit is added to the control scheme to achieve near unity power factor independent of the load variations. The paper includes analysis, design guidelines and experimental results on a 1 kVA laboratory prototype to confirm the theoretical considerations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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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) | 0.004 | 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