A Global Redundancy Scheme for Medium-Voltage Modular Multilevel Converter Based Solid-State Transformer
Why this work is in the frame
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Bibliographic record
Abstract
Reliability and fault-tolerant operation are among the major concerns of the modular multilevel converter (MMC) based applications due to their use of a large number of power electronic devices. This paper presents a novel global redundancy scheme for medium-voltage (MV) MMC based solid-state transformers (SSTs) to deal with the submodule (SM) IGBT open-circuit failure. By sharing the same redundant SM in one phase via bidirectional switches, the proposed fault-tolerant scheme can significantly maintain the SST operation with minimum degradation and save the initial cost and volume of the system. The characteristics of the IGBT open-circuit fault with two different SM topologies are summarized in detail. The proposed global redundancy scheme can efficiently restore the system from SM failure without severe malfunction and damages. Its effectiveness is verified by simulations carried out in the MATLAB/Simulink software.
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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