Design of the Magnetic Components for High-Performance Multilevel Half-Bridge Inverter Legs
Bibliographic record
Abstract
Designs for the inductive components of a novel multilevel half-bridge inverter topology are presented, for an experimental high-bandwidth audio amplifier application. The design of the coupled-inductor component is examined to give a compact design by using a gapped-ferrite toroid with minimal impact to system losses over the full range of the amplifier output. The impact of using the topology with the coupled inductor on the design of the output filtering inductor is also examined to allow a significant reduction of the physical size of this component when using lossy powdered-iron materials to design a highly linear low-pass filter. In combination with the ferrite-core coupled inductor, the total magnetic weight of the experimental design is shown to be reduced at 20 g total, compared to the required filter inductor at 30 g for the same design by using a standard inverter topology with similar total losses. In addition, the analysis presented points to methods which can be used to further optimize the size and losses of these components.
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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 | 0.000 |
| 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 | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".