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dc.contributor.authorYan, Jinghuien_US
dc.date.accessioned2018-03-14T08:00:29Z
dc.date.available2018-03-14T08:00:29Z
dc.date.issued2018-03-13en_US
dc.identifier.othervt_gsexam:14471en_US
dc.identifier.urihttp://hdl.handle.net/10919/82490
dc.description.abstractThe increasing global energy demand calls for attention on renewable energy development. Among the available technology, the photovoltaic (PV) panels is a popular solution. Thus, targeted Power Conditioning Systems (PCSs) are drawing increased attention in research. Microconverter is one of the PCS that can support versatile applications in various power line architectures. This work focuses on the comparison of circuit secondary side architectures for LLC converter for microconverter application. As the research foundation, general characteristic of solar energy and PV panel operation are introduced for the understanding of the needs. Previous works are referenced and compared for advantages and limitation. Base on conventional secondary resonant full bridge LLC converter, the two sub-topologies of different secondary rectification network: active, full bridge secondary and active voltage doubler output end LLC converter are presented in detail. The main operating principle is also described in mathematical formula with the corresponding cycle-by-cycle operation to ensure the functional equality before proceeding to performance comparison. Circuit efficiency analysis is conducted on the main power stage and the key components with frequency consideration. The hardware circuit achieved the designed function while the overall hardware efficiency result agrees with analysis. In the implementation, the transformer is costume built for the system pacification. Another part is the parasitic effect analysis. At a high operating frequency and to achieve very high-frequency operation, parasitic effect need to be fully understood and considered as it may have the dominating effect on the system.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis item is protected by copyright and/or related rights. Some uses of this item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectphotovoltaicen_US
dc.subjectdc-dc power conversionen_US
dc.subjectresonant converteren_US
dc.subjecthigh efficiencyen_US
dc.subjectsecondary architectureen_US
dc.subjectperformance comparisonen_US
dc.titleFull Bridge LLC Converter Secondary Architecture Study for Photovoltaic Applicationen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical Engineeringen_US
dc.contributor.committeechairLai, Jih-Sheng Jasonen_US
dc.contributor.committeememberHa, Dong S.en_US
dc.contributor.committeememberLi, Qiangen_US


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