A Half-Bridge Single-Stage AC–DC Converter With Single- and Three-Phase Compatibility
Bibliographic record
Abstract
This paper presents a single-stage AC–DC converter based on a dual-active half-bridge topology, supporting both single-phase and three-phase operation. The proposed architecture employs three interleaved totem-pole legs on the AC side and three half-bridge legs with split capacitors on the DC side, reducing the switch count compared to the previous full-bridge approach. The converter achieves full zero-voltage switching (ZVS) for all switches in continuous conduction mode (CCM) and zero-current switching (ZCS) for DC-side switches in discontinuous conduction mode (DCM). For single-phase operation, an integrated split-capacitor-type active power decoupling circuit eliminates the second-harmonic ripple in the DC charging current without additional components. To validate the concept, an 11-kW laboratory prototype was developed and tested under both single-phase (220 Vac) and three-phase (380 Vac) inputs, with battery voltages ranging from 400 Vdcto 800 Vdc. Experimental results show peak efficiencies of 96.85%, Experimental results demonstrate a peak efficiency of 96.85%, grid current total harmonic distortion (THD) below 3%, and a power density of 2.7 kW/L.
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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 | 0.000 |
| 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".