A New Control Method for an On-Board Charger for Electric Vehicles Operating in a Split-Phase System
Bibliographic record
Abstract
This article introduces a novel control method for an on-board charger (OBC) operating within a split-phase system, which is commonly used in the North American Free Trade Agreement (NAFTA) region, including the United States, Canada, and Mexico. Previous research has not extensively explored control methods for split-phase systems. In response, this article proposes a discontinuous pulsewidth modulation-minimum (DPWM-MIN) approach, which significantly improves efficiency compared to the conventional sinusoidal pulsewidth modulation (SPWM) method. The proposed DPWM-MIN method demonstrates the ability to manage grid conditions when unbalanced loads are present. A comprehensive comparison between SPWM and DPWM-MIN is conducted, focusing on current ripple, switching loss, and core loss analysis. Experimental results from a 7.68-kW OBC prototype are presented to validate the effectiveness of the proposed method. The new control method achieves a peak efficiency of 98%, which is 1% higher than the conventional method. Other performance metrics, such as total harmonic distortion (THD) and the ability to handle unbalanced currents, remain similar to those of the conventional approach.
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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 | 0.001 | 0.001 |
| 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".