A single stage three level resonant PFC AC/DC converter using combined phase-shift and frequency control
Bibliographic record
Abstract
This paper presents a new single stage three level resonant power factor correction AC/DC converter suitable for high power applications (in the order of kilowatts) with a universal input voltage range (90-265 Vrms). The proposed topology integrates a boost input current shaper with a half-bridge three-level LCC resonant DC/DC converter. The converter operation is controlled by means of a combination of phase-shift and frequency control. The phase-shift between the switch gate pulses is used to regulate the DC-bus voltage to a specified level for all loading conditions, whereas, frequency control is used to tightly regulate the output voltage. An auxiliary circuit is used in order to balance the voltage across the two DC-bus capacitors. The input inductor operates in discontinuous conduction mode. The effectiveness of the proposed converter is verified for a 2.3 kW, 500 kHz converter with an input voltage range of (90-265 Vrms) and a DC output voltage of 48 V.
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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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.002 |
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".