A new single stage power factor corrected three level resonant AC/DC converter with and without active current control
Bibliographic record
Abstract
A new single-stage power factor correction converter based on a three-level LCC resonant topology that is suitable for high power applications and universal input voltage (90-265 Vrms) is proposed. It integrates the pulse width modulated (PWM) boost pre-regulators and variable frequency resonant circuits giving a variable frequency asymmetrical PWM (VFAPWM) resonant circuit operation. This regulates the output voltage, obtains a sinusoidal input current at near unity power factor and regulates the DC bus voltage to a controlled level leading to reduced switch ratings, therefore, improving the efficiency. Zero-voltage-switching is achieved for wide ranges of input voltage and loading. The circuit is studied in both continuous and discontinuous conduction modes. Simulation results for a 48 V, 2.3 kW, three-level half -bridge resonant converter operating at an input voltage of 90-265 Vrms and overall resonant frequency of 770 kHz, verify the effectiveness of the proposed method.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".