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Cascaded Modular Converter With Reduced Output Voltage Ripple

2019· article· en· W3019085449 on OpenAlexaff
Ahmed Sheir, Vijay K. Sood

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicMultilevel Inverters and Converters
Canadian institutionsOntario Tech University
Fundersnot available
KeywordsConvertersRipplePhotovoltaic systemVoltageModular designComputer scienceMATLABElectronic engineeringModularity (biology)Power (physics)Control theory (sociology)Topology (electrical circuits)EngineeringElectrical engineeringPhysics

Abstract

fetched live from OpenAlex

In this paper, two cascaded modular converter configurations are compared: CMC and MLC. The non-isolated version offers a simpler construction, control method, better modularity and better power management architecture. The isolated version is considered better in a photovoltaic (PV) application as it can handle the difference in irradiance conditions i.e. due to partial shading without affecting the symmetry of its output voltage and current. Combining the advantages of differential-mode converters and multilevel inverters, CMCs can produce naturally filtered output voltage and current with lower voltage stress across its components while allowing for better power management. Moreover, a modified switching pattern is introduced to further reduce the sizing of the passive components (LC filters). This is done by shifting the triangular carrier associated with each dc-dc module which results in much lower average output ripples. Thus, lower switching frequency and / or converter size can be achieved. A brief description of the converters construction and operation is introduced. Then, Matlab / Simulink model is constructed to validate the converters ability to produce lower output ripples.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.945
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.001

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.

Opus teacher head0.008
GPT teacher head0.175
Teacher spread0.167 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designSimulation or modeling
Domainnot available
GenreEmpirical

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".

Quick stats

Citations1
Published2019
Admission routes1
Has abstractyes

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