Bibliographic record
Abstract
This paper presents a new rectifier topology that uses 18-pulse transformers to achieve 36-pulse harmonic cancellation. The proposed rectifier can be used to reduce the input current harmonics for several multilevel inverters, such as 3-level neutral point clamped (NPC), 5-level cascaded H-bridge (CHB) and 5-level NPC/H-bridge inverters. It can also be used to neutralize harmonics between two 18-pulse drives. Compared to conventional multi-pulse topologies, it uses less secondary windings and simpler transformers to achieve better current THD. Fourier analysis shows that the topology is able to achieve 36-pulse harmonic cancellation. It also provides additional harmonic cancellation for the 5/sup th/ and 7/sup th/ harmonics for non-ideal transformers or between two drives. The simulated current waveforms, current spectra and DC bus voltages are given to confirm the theoretical analysis. Experiments are performed to verify the performance.
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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) | 0.003 | 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".