Approximate model and low‐order harmonic reduction for high‐voltage direct current tap based on series single‐phase modular multilevel converter
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Bibliographic record
Abstract
The series single‐phase modular multilevel converter (SSP–MMC) is investigated as one option for high‐voltage direct current tap aimed to reduce the number of switching devices by one‐third. First an approximation method is applied to calculate the sub‐module capacitor voltage of the proposed SSP–MMC. Based on that, the approximate equivalent circuits for ac and dc sides are both presented to demonstrate the mechanism of the second and third harmonics. Then the methods to reduce the second and third harmonics are proposed as parts of the overall control loop. Simulation results obtained in power system computer aided design (PSCAD) are provided to validate the brief equivalent models and the second and third harmonic reduction methods.
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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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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.
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