Real-time performance of FPGA-based MMC valves for HVDC systems
Bibliographic record
Abstract
Simulation tools are necessary to research and develop modular multi-level converter (MMC) based HVDC systems for the future power grid. Real-time simulators offer the ability to connect to real physical equipment in a hardware-in-loop (HIL) scheme to test and design controllers, protection systems and encompass the complete operation and response of an HVDC system. The complexity of an MMC valve poses challenges for real-time modelling. For the RTDS Simulator, a surrogate network topology is used to model MMC valves to reduce the computational requirements of the valve model but still maintain the accuracy of a real valve. To model up to 512 submodules (SMs) per valve at a time-step as small as 2.5 μsec, Field Programmable Gated Array (FPGA) are used to compute the MMC valve model and is interfaced to the main RTDS hardware. To demonstrate the performance and accuracy of the FPGA-based MMC valve model, comparison results are provided between the RTDS and PSCAD simulation of a point-to-point link for AC and DC faults.
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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".