Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/166278
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dc.titleENERGY EFFICIENT MULTI-CHANNEL SELECTIVE DIMMING LED DRIVERS WITHOUT ELECTROLYTIC CAPACITORS
dc.contributor.authorYE CIKAI
dc.date.accessioned2020-03-31T18:00:56Z
dc.date.available2020-03-31T18:00:56Z
dc.date.issued2019-08-06
dc.identifier.citationYE CIKAI (2019-08-06). ENERGY EFFICIENT MULTI-CHANNEL SELECTIVE DIMMING LED DRIVERS WITHOUT ELECTROLYTIC CAPACITORS. ScholarBank@NUS Repository.
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/166278
dc.description.abstractLEDs have advantages of more efficient, durable and environmentally friendly. AC input high power LED drivers have limited lifetime compared to LEDs due to electrolytic capacitors. Hence, a method of decoupling is required to eliminate such electrolytic capacitors. This thesis proposes two methods for power ripple decoupling based on eliminating electrolytic capacitors for a two-stage multi-channel LED driver. The first method is to add an auxiliary inductive storage circuit for decoupling. The second method is based on the primary side peak current control for decoupling. For the optimized lighting applications, the LEDs connected to different channels of the multi-channel driver are required to operate at different brightness for individual channels depending on ambient light and occupancy. In such applications, a multi-channel LED driver with selective dimming of its channels presents a cost-effective and more optimized solution. This thesis also proposes three solutions for selective dimming of the multi-channel LED driver.
dc.language.isoen
dc.subjectMulti-channel LED driver, peak current control, selective dimming, non-resonant converter, ripple cancellation, second harmonic decoupling
dc.typeThesis
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.supervisorDipti Srinivasan
dc.contributor.supervisorSahoo Sanjib Kumar
dc.description.degreePh.D
dc.description.degreeconferredDOCTOR OF PHILOSOPHY (FOE)
dc.identifier.orcid0000-0001-9877-1855
Appears in Collections:Ph.D Theses (Open)

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