LQR with Integral Action for Phase Current Control of Constant Switching Frequency Vienna Rectifier
Bibliographic record
Abstract
This paper deals with the design of a linear quadratic regulator (LQR) with integral action (LQIR) to improve dynamic performance of a three-phase Vienna rectifier. The integral action is added to cancel the steady state errors knowing that the standard LQR controller provides only proportional gains. The controller is designed to achieve overall output voltage regulation, DC load unbalance compensation and unity power factor. The converter small-signal model is in the dq rotating reference frame augmented with the integral of the q-component of input currents; overall output voltage and DC load unbalance. The performance of the controller depends on the weightening matrix which is chosen to guaranty satisfactory responses. The converter is controlled as a whole which provides the input current references and a fixed PWM at 2.04 kHz is used to generate the gating signals of the power semiconductors. Simulation results obtained using Matlabreg/Simulink are presented to confirm the validity of the proposed controller design. The system is tested for a balanced load at rated power, in case of unbalanced load and for mains voltages perturbations and shows good performance in terms of the overall DC output voltage regulation, DC load unbalance compensation (small overshoot and very fast time response) and small total harmonic distortion (THD) of 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".