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 V<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ac</sub>) and three-phase (380 V<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ac</sub>) inputs, with battery voltages ranging from 400 V<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dc</sub> to 800 V<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dc</sub>. 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 distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".