Ripple voltage minimization in single phase floating bridge converter modules using a Transformer Coupled Asymmetrical bridge converter
Bibliographic record
Abstract
A method for reducing the capacitor size used in single phase floating capacitor voltage source converter modules is presented. A Transformer Coupled Asymmetrical half-Bridge (TCAB) is used to exchange energy between the capacitor regulated dc sources of the main power converter modules, without using separate power sources. This energy exchange (bidirectional) compensates for naturally occurring low frequency voltage ripple in the floating capacitor main power converters. This enables smaller film dc capacitors to be used. The latter can be used to reduce the overall system size/cost with a longer system working lifetime. The ripple voltage reduction and voltage balancing features provided is not intended to be specific to a particular modular power converter system, MMC systems are an example, but are illustrated here using utility connected single phase floating converters. The switching control methods described avoid the use of extra filter components and to maximize the average current used to transfer energy between the modules. Simulations and experimental results are presented to validate the operation and performance of the proposed system with the emphasis placed on the voltage ripple reduction feature.
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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) | 0.002 | 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".