A modular photo-voltaic grid-connected inverter based on phase-shifted-carrier technique
Bibliographic record
Abstract
Residential photovoltaic grid-connected inverters are modular distributed power generation devices that convert the DC power from the roof-top solar panels to high-quality AC power at the utility grid interface. In this paper, the phase-shifted-carrier technique, which is normally used in high power multi-converter schemes, is applied to a modular grid-connected inverter to improve the output current waveform. First, it is shown, through analysis and simulation, that in the commonly-used photovoltaic grid-connected inverter topology, based on the phase-shift modulated full-bridge converter, the well-known rule of the phase-shift between the carrier signals of the adjacent modules is not valid for both odd and even number of modules. Then, a new general rule for the phase-shift is proposed, and finally, the validity of the proposed rule and its effect on the improvement of the quality of the output current waveform are verified through simulation.
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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 | 0.000 | 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".