A bi-directional AC-DC converter for electric vehicle with no electrolytic capacitor
Bibliographic record
Abstract
An isolated single-stage bi-directional AC-DC converter with no electrolytic capacitor for electric vehicle battery charger application is proposed. The topology utilizes a single-stage series resonant dual Half-bridge AC-DC converter to transfer the power and an active-shunt filter on the DC-side to absorb the 100/120Hz current ripple and prevent it from going to the battery. Diverting the low frequency ripple to the active filter prevents extra heat production in the battery and increases of the lifespan of the battery. Also film capacitors, instead of electrolytic capacitors with a lower lifetime, can be used on the DC-side filter. The reliability of the system is increased by not using an electrolytic capacitor in the circuit. To control the circuit for a wide range of power and power angle under soft switching, a four-part controller is proposed. The controller obtains ZVS for all the active switches while it optimizes the performance of the system in terms of conduction losses. ZVS operation of the circuit, enables the switching frequency to increase without increasing the switching losses. Increased switching frequency will result in smaller reactive components and smaller transformer size. The proposed controller obtains the best performance from the circuit. Simulation results with PSIM and experimental results to verify the theory have been carried out.
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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".