A Single-Carrier PWM Method for Uniform Step Asymmetrical Multilevel Converters
Bibliographic record
Abstract
This paper proposes a general design principle of a single-carrier-based pulse width modulation (SC-PWM) technique for a uniform step, asymmetrical multilevel converter with k series-connected H-bridge inverters under unequal DC-link voltages within each phase. The proposed modulation approach is a straightforward implementation of the conventional phase-disposition PWM. It may produce many output voltage levels (any odd number between 2k+1 and 3<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</sup>) using only one carrier signal without complicating its implementation scheme. This makes it suitable for real-time implementation in available low-cost microcontrollers and microprocessors. The topological structure of the investigated asymmetrical multilevel converter is presented, and analytical relationships are established to define a general design principle of a uniform step configuration. Then, the proposed method's working principle and its generalized implementation scheme are presented and discussed. The effectiveness of the suggested PWM technique is finally demonstrated by simulation and experimental results for a single-phase, three-cell asymmetric converter operating under unequal DC-link voltages with 7, 11, 13, and 15 voltage levels.
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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 | 0.001 |
| 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 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".