Evaluation of a non-isolated charger. Concept, analysis and reference design.

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/162602
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dc.contributor.authorNyström, Robert
dc.contributor.authorHe, Yuxuan
dc.contributor.departmentChalmers tekniska högskola / Institutionen för energi och miljösv
dc.contributor.departmentChalmers University of Technology / Department of Energy and Environmenten
dc.description.abstractThis report discusses the necessity of a galvanic isolation in an onboard charger for a Plug-in Hybrid Electric Vehicle. It was hypothesized that the galvanic isolation was a source of losses, and it is known that the use of galvanic isolation give rise to higher costs and it requires more space. Three different topologies without galvanic isolation was investigated and simulated in OrCad PSpice. For these, cost, volume, weight and efficiency was analyzed and a best solution was chosen. It was found that using a bridgeless charger gave the highest efficiency, approximately 98%, and it also had acceptable price and a satisfactory dimensional analysis. The bridgeless charger did however not perform good regarding THD injected into the utility, thus future work with this charger is needed to investigate if it is possible to reduce the THD impact without influencing the efficiency, size and weight to much. Synchronous rectification was also investigated and it was found that it was not a good solution in this case.
dc.subjectElectric power engineering
dc.titleEvaluation of a non-isolated charger. Concept, analysis and reference design.
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
Collection:Examensarbeten för masterexamen // Master Theses

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