Constant-Parameter Average-Value Model of Power-Electronic Voltage-Source Converters With Direct Interface in Electromagnetic Transient Simulators
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Bibliographic record
Abstract
Average-value models (AVMs) of voltage-source converters (VSCs) are widely used as numerically efficient alternatives to their discrete switching models in electromagnetic transient (EMT) simulations. Recently, a so-called directly-interfaced AVM (DI-AVM) has been developed for VSCs, permitting large simulation time steps favorable for system-level offline and/or real-time studies. Although enabling large step sizes, the conductance/resistance matrix of the DI-AVM is time-varying and needs to be calculated at every simulation time step, which requires additional computational resources. This paper proposes a constant-parameter DI-AVM (CP-DI-AVM) for more efficient simulations of VSC-based power-electronic systems that does not require re-calculation of the network conductance matrix in EMT simulators. This is achieved by using a numerical approximation that only slightly reduces the solution accuracy. The performance of the proposed CP-DI-AVM is demonstrated on a large-scale VSC-based energy conversion system implemented in PSCAD/EMTDC. The proposed CP-DI-AVM is shown to have numerical advantages over the prior DI-AVM and the conventional AVMs of VSCs.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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