Sliding mode control of 3-phase shunt active filter in the d-q frame
Bibliographic record
Abstract
In this paper a sliding mode approach is developed to control a three-phase, three-wire voltage source inverter operating as a shunt active filter (AF). The AF has to compensate for harmonics, reactive and unbalanced nonlinear load currents while regulating its self-supporting DC bus voltage. The novelty of the proposed control approach is that the sliding mode switching functions are constructed in such a way that the supply currents shaping and the AF dc voltage regulation are achieved simultaneously. Therefore, there is no need to divide the multivariable state space model in the synchronous d-q reference frame into inner and outer separate loops. The control design is based on Lyapunov stability criterion and the proposed control law has two parts: a switching component forcing the system's trajectory to the sliding surface and a continuous component valid on the sliding surface. The proposed control strategy allows a better stability and robustness over a wide range of operation. The variable structure controller presented is successfully demonstrated by simulation results.
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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 | 0.000 |
| 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) | 0.001 | 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".