Three phase common-mode winding voltage elimination in a three-limb five-level coupled inductor inverter
Bibliographic record
Abstract
In three phase converters that use interleaved switching, coupled inductors between modules can be used to create a multi-level PWM output. To save weight, these coupled inductors can be integrated together to use a single three-limb core, but the presence of common mode voltages across the three-phase windings significantly reduce the converter performance. In this paper, a space vector based approach is used to eliminate these common mode winding voltages, allowing efficient three-limb coupled inductor operation at standard industrial switching frequencies, e.g. 3 kHz. This modulation approach is applied to a five-level neutral point clamped coupled inductor inverter (NPC-CII) and is intended to allow the use of lower frequency, higher powered devices. The proposed approach is compared against an interleaved modulation scheme that does not incorporate common mode winding elimination, and a 10 kW NPC-CII experimental prototype is used to confirm operation.
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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 | 0.000 | 0.000 |
| Open science | 0.001 | 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 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".