Study and Implementation of High-Performance Cascoded-Output Single-Stage LED Street Light Drivers

• Main Authors: Sz-wei Jung, 鍾四維
• Other Authors: Yu-Kang Lo
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/44267008492603996470

碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === This thesis studyies and implements a high-efficiency power supply for driving a 200-W LED streetlamp. A new topology is proposed based on single-stage flyback converters. A 150-W constant-voltage flyback converter and a 50-W constant-current counterpart are respectively designed. The presented high-power LED streetlamp driver is thus implemented by combining these two converters with parallel-connected input and series-connected output. The operating principles of a flyback converter are firstly analyzed. Design guildlines for the controller and main circuit elements are provided. A prototype converter with 200-W rated output power and 0.7-A rated output current is realized. We proved the capability and good performance of this new topology.