Coordination Control of Modulation Index and Phase Shift Angle for Current Stress Reduction in Isolated AC–DC Matrix Converter
Why this work is in the frame
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Bibliographic record
Abstract
Due to the potential for high power density and high efficiency, the isolated ac-dc matrix converter is an attractive alternative for voltage source converters in applications requiring isolation and bidirectional power flow. However, existing control schemes fail to coordinate the modulation index and phase shift angle, and instead focus on optimizing one of the two variables. This can cause high current stress on the high frequency transformer, leading to low efficiency under a light load. To optimize the operation of the isolated ac-dc matrix converter, the coordination control of the modulation index and phase shift angle is proposed in this article to suppress the peak current of the transformer. First, a mathematical model based on Fourier transform is established to calculate the current stress. Then, the combination of the modulation index and the phase shift angle is obtained to minimize the current stress and improve the converter efficiency. Experimental results on an isolated ac-dc matrix converter are provided to verify the effectiveness of the proposed method.
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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 | 0.000 |
| 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 it