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dc.contributor.authorHao, Ting
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.date2013-04-30 13:22:28.471en
dc.date.accessioned2013-05-01T21:17:18Z
dc.date.issued2013-05-01
dc.identifier.urihttp://hdl.handle.net/1974/8011
dc.descriptionThesis (Master, Electrical & Computer Engineering) -- Queen's University, 2013-04-30 13:22:28.471en
dc.description.abstractWith superior longevity, approximately 5 times that of compact fluorescents (CFLs), and high efficacy, around 1.5 times that of CFLs, LEDs are now attracting vast attention from both academic and industrial sectors. Unfortunately, current power supply drivers for LEDs have the following drawbacks: (1) for a two-stage configuration, the power factor correction (PFC) circuit can help LEDs achieve good operating performance but contain too many components and are large in size, have low efficiency and relatively high cost; (2) a single-stage configuration can perform well in PFC and efficiency, however reliability issues occur due to the use of the electrolytic capacitor. In this thesis, the theoretical analysis and implementation of two high power factor, soft-switched, electrolytic-capacitor-less LED drivers are presented. The two drivers solve the aforementioned issues while minimizing its size and cost. The detailed theoretical analysis illustrates the advantages of the presented circuits and provides insight into their design and operation. The simulated and experimental implementations verified the performance of both circuits, which achieve a high power factor, indicating that the drivers have good operating performance. Elimination of the electrolytic capacitors improves the LED drivers’ reliability. In addition, with the help of soft-switching capability, high efficiency is achieved. Simulation and experimental results are presented to support all merits of the two circuits.en_US
dc.languageenen
dc.language.isoenen_US
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectLED driveren_US
dc.subjectElectrolytic capacitoren_US
dc.subjectPower factoren_US
dc.subjectPower electronicsen_US
dc.titleAnalysis and Design of High Power Factor LED Drivers without Electrolytic Capacitoren_US
dc.typeThesisen_US
dc.description.restricted-thesisThe contents in the thesis may be of commercial value and a patent may be filed at a future date.en
dc.description.degreeMasteren
dc.contributor.supervisorJain, Praveen K.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.embargo.terms1825en
dc.embargo.liftdate2018-04-30


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