Experimental testing of a novel control for inverter-fed three-phase induction motor
Bibliographic record
Abstract
This paper presents a real-time implementation of a new control approach for 3/spl Phi/ induction motors. The conventional SPWM technique uses triangular carrier signals, which can be interpreted as a periodic form of the second order cardinal B-spline function. The proposed control approach is based on changing the order of the carrier signal. Such change in the order is achieved through multiplying the carrier signal with a sine function, whose phase is related to the inverter output current. Changing the order of any cardinal B-spline function will result in changing its filtering capabilities. In this paper, an experimental testing for the proposed resolution-level control approach is developed and tested on a 3/spl Phi/ six-pulse VS SPWM inverter-fed squirrel-cage induction motor. The generation of switching pulses as well as an algorithm for carrying out the proposed resolution-level control are implemented using a dSPACE ds1102 digital signal processor (DSP) board. Test results demonstrate a significant performance improvement under the proposed control approach, where output harmonic contents are reduced, motor starting current is reduced and the magnitude of the fundamental component is improved. Experimental test results confirm the efficacy of the proposed control approach.
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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".