Generalized DC-DC-AC MMC Structure for MVDC and HVDC Applications
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
A generalized modular multilevel converter (MMC) chain-link structure is presented that allows independent power transfer between two dc systems and one ac system. This chain-link structure is shown to give rise to two new dc-dc-ac MMC topologies suitable for MVDC and HVDC applications. Simultaneous dc-dc and dc-ac conversion is achieved by exploiting a center-tap transformer connection where the windings can carry both dc and ac currents, without leading to increased transformer rating or size when compared to a conventional two-winding ac transformer for a standard dc-ac MMC. A unified control scheme is proposed to independently control dc and ac terminals power transfers while maintaining balanced capacitor voltages for both topologies. Converter operation and the proposed dynamic controls are validated by real-time simulations obtained from RTDS system using FPGA-based low-level valve firing control.
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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 | 0.000 |
| 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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it