Power management for self-powered SiC based AC smart-breaker for nano-grid applications
Bibliographic record
Abstract
This work targets a novel self-powered Smart Circuit Breaker (SCB) for monitoring and controlling power in emerging small-scale AC nano-grids. The SCB concept is intended as a direct replacement of standard(120 Vac, 15 Arms) household circuit breakers, which imposes several challenging constraints. The SCB must therefore generate its own internal supply from the small AC voltage drop across the main switch when the breaker is closed. The SCB is composed of the following key blocks: 1) back-to-back 900 V Silicon Carbide (SiC) MOSFETs as the main power switches, 2) a low-voltage energy harvesting circuit, 3) a high-voltage step-down converter, and 4) low-power digital controller and wireless communication circuits. In order to stabilize the internal supply voltage under a wide range of AC load currents, a novel approach of dynamic on-resistance control is implemented, through adaptive gate-drive and MOSFET segmentation. The fabricated SCB prototype dissipates only 7.4 W for a 13 Arms AC load, corresponding to an efficiency of 99.5%.
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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) | 0.000 | 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 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".