On-line generation of gating signals for current source converter topologies
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Bibliographic record
Abstract
PWM rectifiers and current source inverters (CSI's) are usually gated using optimized patterns stored in EPROMs. Patterns are therefore mostly of fixed modulation index, since variable modulation index requires storing patterns for a finite numbr of indices. Furthermore, the modulation index can only be changed once per cycle, thus reducing the dynamic response of the system. This paper proposes a technique of generating gating patterns online for CSI topologies based on carrier PWM techniques (PWM rectifiers or inverters). The proposed technique is designed and implemented for the standard three-phase six-switch configuration. It delivers the appropriate gating signals for all switching patterns and modulation indices including overmodulation. It is therefore possible to extend the concept of duality in the power circuit topology between VSI's and CSI's to carrier PWM modulation techniques. In the proposed approach, the requirements imposed on gating signals are satisfied by the appropriate combinations of single phase switching patterns and the introduction of the required complementary and overlap pulses. Implementation in a mixed analog/digital circuit is described and experimental results obtained on a 2 kVA voltage-controlled current source inverter unit are given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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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) | 0.001 | 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