Single-stage SEPIC Converter for Driving Lighting LED Lamps
碩士 === 中原大學 === 電機工程研究所 === 95 === Single-stage boost-type DCM PFC converters are commonly used in low-power lighting applications. The peak source current can be shaped automatically to follow the source voltage as long as the boost inductor is operated in discontinuous conduction mode. However, hi...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/27570733459103225341 |
| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 95 === Single-stage boost-type DCM PFC converters are commonly used in low-power lighting applications. The peak source current can be shaped automatically to follow the source voltage as long as the boost inductor is operated in discontinuous conduction mode. However, high DC bus voltage may cause over voltage stresses on the switching devices. In this thesis, a CCM SEPIC PFC converter is studied for driving lighting LED lamps. High power factor, high efficiency, and LED current regulation can be achieved with the proposed SEPIC converter. The operating principles and design considerations for the proposed SEPIC PFC converter are analyzed and discussed in detail. A laboratory prototype has been built and tested to verify the feasibility of the proposed scheme.
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