In the thesis, LED driver circuits which are applied in low power lighting LED with constant output current and Power Factor Correction are presented. The non-isolated Buck converter are used for the LED drivers. According to different operating mode of inductance current, Power Factor Correction are realized with both the method of Voltage Follower Approach Control under Discontinuous Conduction Mode and the method of Nonlinear Carrier Control under Continuous Conduction Mode. NLC doesn¡¦t need the multiplier which is used in traditional power factor correction, therefore NLC can reduce the system cost. The designed circuits are verified by simulation of IsSpice software and practical experiments. From simulation and experimental results, it shows the proposed approaches achieve the goal with high power factor and constant output current.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0802110-115000 |
| Date | 02 August 2010 |
| Creators | Wu, Wen-yuan |
| Contributors | Chin-Wen Chuang, Yung-Chun Wu, Tzuen-Lih Chern, Geeng-Kwei Chang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-115000 |
| Rights | not_available, Copyright information available at source archive |
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