An LED Driver With Dynamic High-Frequency Sinusoidal Bus Voltage Regulation for Multistring Applications
作者： Quanming Luo , Shubo Zhi , Can Zou , Weiguo Lu , Luowei Zhou
DOI: 10.1109/TPEL.2013.2253335
关键词:
摘要: In order to obtain sufficient luminance and achieve high reliability, light-emitting diodes (LEDs) are usually arranged in parallel strings many high-power applications. Since current imbalance should be avoided among the LED strings, a multichannel constant driver with dynamic high-frequency sinusoidal voltage regulation is proposed this paper. The composed of one resonant inverter several LCL-T rectifiers. number rectifiers equals that strings. rectifier whose output sensed closed-loop controlled called master all others slave used convert dc into bus included drive current. amplitude dynamically regulated ensure by controller. linear as rectifier, there not any auxiliary circuits while balancing achieved. Finally, 200-W prototype fifteen built verify performance driver.
sci-hub.se 参考文章(29)
Yuan-Ta Hsieh, Bin-Da Liu, Jian-Fu Wu, Chiao-Li Fang, Hann-Huei Tsai, Ying-Zong Juang, A High-Dimming-Ratio LED Driver for LCD Backlights IEEE Transactions on Power Electronics. ,vol. 27, pp. 4562- 4570 ,(2012) , 10.1109/TPEL.2012.2188306
Sung-Soo Hong, Sang-Hyun Lee, Sang-Ho Cho, Chung-Wook Roh, Sang-Kyoo Han, A New Cost-Effective Current-Balancing Multi-Channel LED Driver for a Large Screen LCD Backlight Units Journal of Power Electronics. ,vol. 10, pp. 351- 356 ,(2010) , 10.6113/JPE.2010.10.4.351
H. Pollock, Simple constant frequency constant current load-resonant power supply under variable load conditions Electronics Letters. ,vol. 33, pp. 1505- 1506 ,(1997) , 10.1049/EL:19971063
Huang-Jen Chiu, Shih-Jen Cheng, LED Backlight Driving System for Large-Scale LCD Panels IEEE Transactions on Industrial Electronics. ,vol. 54, pp. 2751- 2760 ,(2007) , 10.1109/TIE.2007.899938
S.M. Baddela, D.S. Zinger, Parallel connected LEDs operated at high to improve current sharing ieee industry applications society annual meeting. ,vol. 3, pp. 1677- 1681 ,(2004) , 10.1109/IAS.2004.1348696
M. Borage, S. Tiwari, S. Kotaiah, Analysis and design of an LCL-T resonant converter as a constant-current power supply IEEE Transactions on Industrial Electronics. ,vol. 52, pp. 1547- 1554 ,(2005) , 10.1109/TIE.2005.858729
Yuequan Hu, Milan M. Jovanovic, LED Driver With Self-Adaptive Drive Voltage IEEE Transactions on Power Electronics. ,vol. 23, pp. 3116- 3125 ,(2008) , 10.1109/TPEL.2008.2004558
Zhongming Ye, P.K. Jain, P.C. Sen, A Two-Stage Resonant Inverter With Control of the Phase Angle and Magnitude of the Output Voltage IEEE Transactions on Industrial Electronics. ,vol. 54, pp. 2797- 2812 ,(2007) , 10.1109/TIE.2007.896027
Sungjin Choi, Pankaj Agarwal, Teahoon Kim, Joonhyun Yang, Baikhee Han, Symmetric current balancing circuit for multiple DC loads applied power electronics conference. pp. 512- 518 ,(2010) , 10.1109/APEC.2010.5433624
Y.X. Qin, S.Y.R. Hui, Comparative Study on the Structural Designs of LED Devices and Systems Based on the General Photo-Electro-Thermal Theory IEEE Transactions on Power Electronics. ,vol. 25, pp. 507- 513 ,(2010) , 10.1109/TPEL.2009.2026752