Development and Experimental Testing of a Single-Phase B-Spline-Based SPWM Inverter
Bibliographic record
Abstract
This paper presents real-time implementation and testing of a new family of cardinal beta-spline carrier signals. These carrier signals are tested for a single phase (1Phi) sinusoidal pulse-width modulated (SPWM) voltage-source (VS) inverter. The conventional SPWM technique uses triangular carrier signals, which can be interpreted as a periodic form of the second order cardinal beta-spline function. The proposed family of carrier signals are periodic cardinal beta-spline functions of order higher than 2. An algorithm to implement different orders of periodic cardinal beta-spline functions is developed and implemented for experimental testing on a 1Phi VS 4-pulse IGBT SPWM inverter. The developed algorithm and the generation of SPWM switching pulses are executed by a dSPACE ds1102 digital signal processor (DSP) board. Test results demonstrate a significant performance improvement using proposed carrier signals, where output harmonic contents are reduced and the magnitude of the fundamental component is improved
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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 | 0.001 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".