LQR with Integral Action to Enhance Dynamic Performance of Three-Phase Three-Wire Shunt Active Filter
Bibliographic record
Abstract
This paper presents the design of a Linear Quadratic Regulator (LQR) with Integral action (LQIR) to improve dynamic performance of a three-phase three-wire shunt active power filter (SAF). The integral action is added to cancel the steady state errors knowing that the standard LQR provides only proportional gains. The controller is designed to achieve DC bus voltage regulation, harmonics and reactive power compensation. The converter model is set in the dq rotating reference frame augmented with the integral of q component of the SAF currents and DC bus voltage. The performance of the controller depends on the weightening matrix which is chosen to guaranty satisfactory responses. The converter is controlled as a whole and a fixed PWM at 2.34 kHz is used to generate the gating signals of the power devices. The system is tested for both active and reactive power variations of the combined linear and non-linear load, for a distorted/unbalanced voltage source, and for unbalanced loads. The Simulation results obtained show good performance in terms of the DC bus voltage regulation (small overshoot and very fast time response) and low total harmonic distortion (THD) of ac line currents.
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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 | 0.000 |
| 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 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".