A New Single-switch, Electrolytic Capacitor-less Step-up DC/DC Converter Topology with Complete Soft-switching Operation for Photovoltaic Application
Bibliographic record
Abstract
A new quasi-resonant, soft-switched electrolytic capacitor-less step-up DC/DC converter for photovoltaic applications is presented in this paper. The proposed circuit is a coupled-magnetics based topology that requires only a single switch. The proposed circuit is able to achieve zero voltage switching (ZVS) turn-on and zero current switching (ZCS) turnoff for the switch. Since the input inductor in the proposed circuit operates in continuous conduction mode, the required input capacitance is reduced and hence, this allows small-size film capacitor to be used. The proposed circuit is able to achieve a large step-up gain while minimizing the ratio between the peak switch voltage and the circuit output voltage. In addition, the proposed circuit is able to achieve maximum power operation with PV panels through the use of variable switching frequency control. Results from a simulated 140W, 150 kHz system and a proof-of-concept hardware prototype are provided to highlight the merits of the proposed circuit.
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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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".