Multi-level single phase boost rectifiers using coupled inductors
Bibliographic record
Abstract
The number of voltage levels available in PWM voltage source converters can be increased by using a split-wound coupled inductor and interleaved PWM switching. This paper examines this technique using a multi-level 1-phase boost rectifier. Traditional interleaved boost rectifiers lower the high frequency input current ripple using current ripple cancellation. Alternatively, the proposed approach uses high frequency multi-level PWM voltage waveforms. The high frequency current ripple and parasitic DC currents are the only winding current components that produce magnetic flux in the coupled inductors. This contrasts with traditional interleaved boost rectifiers where the much larger AC supply input current produces flux in the magnetic core. This feature allows the physical size of the coupled inductors to be reduced, and their inductor value increased to provide improved protection against core saturation. Simulation and experimental results are used to illustrate the operation of the proposed converters. A design study is presented to illustrate that the proposed technique has much lower magnetic core losses, and is competitive in size to traditional techniques.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
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".