Power and frequency controllable multi-level MHz inverter with soft switching
Bibliographic record
Abstract
Wireless Power Transmission Systems (WPTSs) that use capacitive or inductive coupled resonators need to be designed at MHz frequencies to avoid large passive components. Some wireless power applications need power source with frequency control as well as output power control. The advent of high-frequency high-power enhancement-mode Gallium Nitride (eGaN) FETs has made the idea of using efficient switch-mode inverters, instead of linear Radio Frequency (RF) amplifiers for wireless power applications, more realizable. One of the major challenges for this replacement is the design of power and frequency controllable soft switching inverters at MHz ranges with low-pass output filter. This paper presents a soft switching multi-level inverter with dynamic dead-time control designed at 13.56 MHz with 4 MHz output frequency bandwidth. The inverter is designed to eliminate the 3rdand 5thharmonics in the output voltage, which removes the need for a high quality resonant output filter. It is shown through simulation that the inverter can operate as a voltage and frequency controllable supply and deliver almost constant 50W to the load with 4 MHz bandwidth.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".