Enhanced Average-Value Modeling of Voltage-Source Inverters in Variable Frequency Drives for Efficient Simulation of Marine Propulsion Systems
Why this work is in the frame
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Bibliographic record
Abstract
Variable-frequency drive (VFD) systems utilize voltage-source inverters (VSIs) and are employed extensively in many applications, including marine propulsion. For efficient simulations and studies of such systems, average-value models (AVMs) of VSIs are indispensable. Recently, a so-called directly-interfaced AVM (DI-AVM) has been developed for line-commutated and voltage-source converters. In this paper, the DIAVM is developed for VSIs in the converter reference frame, which has advantages for machine-converter systems. The DI-AVM is implemented in electromagnetic transient (EMT) simulation programs as a resistance/conductance matrix instead of controlled voltage/current sources that are used conventionally. The advantages of the proposed DI-AVM are demonstrated on a ship propulsion system implemented in PSCAD/EMTDC. The proposed DI-AVM offers significant computational advantages compared to the conventional AVMs of VSIs by achieving higher numerical accuracy and allowing larger time step sizes.
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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 it