A discrete time controller for a single stage three level resonant PFC converter operated with variable frequency phase shift modulation
Bibliographic record
Abstract
This paper presents a discrete time cycle by cycle controller for a three level resonant single stage power factor correction converter. The controller is supposed to generate variable frequency phase shift modulated (VFPSM) gate signals to the switches. The merits of such control method is to tightly regulate the output voltage, shape the input ac current as well as regulating the dc bus voltage to a specified value throughout the operation range of the converter. The output voltage control loop determines the required switching frequency for the resonant converter to regulate the output voltage, whereas the pulse width is determined by the dc-bus voltage control loop. The sampling period for the controller is determined by the switching frequency obtained from the output voltage control loop. This converter provides high efficiency, reduced voltage stresses, universal input voltage capability, input/output isolation, simplicity of controller implementation and most importantly increased power density. The proposed method is verified through a 2.3 kW, 48 V three level, single stage LCC converter with input voltage varying from 90-265 V rms.
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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 | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".