Influence of WFSM Parameters, Currents and Control Scheme on Its Dynamic Performance During Active Short Circuit Fault in EV
Bibliographic record
Abstract
Drive initiated active symmetrical short circuit (SSC) of motor phases is used as a protection method in electric vehicle (EV) drives during abnormalities. This paper exclusively investigates the effects of wound field synchronous machine (WFSM) stator and field circuit parameters, currents and control methods on its dynamic performance during a forced SSC fault. This paper employs a novel coupled circuit-based control model that represents the stator subsystem in two-axis model and the field exciter and rotor circuit as physical variables to capture the transient response during freewheeling action towards predicting both steady-state and transient responses of a WFSM to 3-phase SSC faults. Stator non-linear inductances, resistances, stator current angle, field current magnitude, and rotor field winding parameters are included in the model, thus making it comprehensive for performance analysis in WFSMs. Behavior of stator and rotor currents during SSC is analyzed at different pre-fault conditions when the WFSM is controlled using total- and rotor-loss minimization control schemes. Results obtained using the developed model are verified and compared with results obtained from numerical simulations based on finite element model and experimental tests conducted on the test machine.
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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".