A Novel Soft-Switched Three-Phase Three-Wire Isolated AC-DC Converter With Power Factor Correction
Bibliographic record
Abstract
A novel isolated AC-DC converter for three-phase three-wire systems is proposed in this paper. The proposed rectifier has a phase modular design, and the input side of the three-phase modules are connected in a Wye (Y) shape creating a virtual ground that allows true three-phase systems to be connected to the proposed AC-DC converter. Moreover, the proposed rectifier is based on the single-stage LLC resonant converter modules and has almost no switching loss due to the zero voltage and current switching performance for all the switching devices. Furthermore, no bulky DC-link E-capacitor is needed in the proposed rectifier and the output capacitor is also small due to canceled low-frequency ripple at the output. Hence, the proposed AC-DC converter is suitable for applications that demand high power density with high efficiency. Principles of operation, analysis, and design considerations for two different output voltage levels are discussed in the paper. Simulation results for two different output voltage levels verified soft-switching, power factor correction, and output voltage regulation. Furthermore, the validity of the proposed three-phase three-wire AC-DC converter is verified through the experimental results of a scaled-down hardware prototype with a unity power factor performance (>0.99) and maximum efficiency of 96.8%.
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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) | 0.001 | 0.001 |
| 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 | 0.001 |
| 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 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".