Wide speed range operation of PMSM using an open winding and a dual inverter drive with a floating bridge
Bibliographic record
Abstract
A controller is described for a 3-phase PMSM that uses an open winding and a dual inverter drive with a floating bridge. The drive has a voltage boosting function that: extends the high-speed range of the PMSM; operates the main inverter bridge at unity power factor above the base speed; compensates for battery voltage fluctuations. The main features of the controller presented are: (a) coordinated control of the two inverters to supply the motor with the demand voltage and frequency; (b) the floating bridge dc capacitor voltage can be regulated and its output voltage used to boost the machine terminal voltage when required; (c) the motor speed is controlled via torque control is independent of the floating bridge dc voltage control. Simulation results are used to clarify the motor-drive characteristics in the speed range extension region. Experimental results show that a significant speed range extension is achievable even when using a PMSM with a very low inductance.
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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 | 0.001 |
| 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".