Compensation of Grid Current Distortion at Sector Boundaries in SVM for PFC Three-Phase Isolated PWM Buck Rectifier
Bibliographic record
Abstract
This paper describes a modified modulation concept for three-phase isolated PWM buck rectifier during phase shift operation of input currents with respect to the mains voltage up-to <tex>$\pm 30^{\circ}$</tex> with compensation of grid current distortion at sector boundaries. The proposed modulation scheme based on space vector modulation (SVM) also allows generation of reactive power to compensate for the input displacement factor due to grid-side filter and maintain unity power factor at light load conditions. The paper starts with a review of converter operation with SVM. Then, output voltage of converter is derived for adjustable power factor operation and generalized duty-cycle loss compensation technique is discussed which is also applicable to phase-shift operation. The implementation of the proposed modulation scheme is discussed and its effectiveness is demonstrated through simulation results for 400 V (RMS), 50 Hz three-phase voltage to 200 V DC power converter of output power up to 6 kW.
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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) | 0.001 | 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 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".