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浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)
Automatic Technology, Communication Engineering     
Advanced adaptive load matching technology used in LED driver
HU Jin, JIN Xiao guang, LIN Hui pin, ZHOU Feng wu, LU Zheng yu
State Key Laboratory of Power Electronics, Zhejiang University, Hangzhou 310027, China
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Abstract  

 An adaptive load matching technology used in LED driver was proposed in order to improve the reliability of LED driver and the load. The array LED load’s structure may change due to the failure during working process. The VI (voltagecurrent) property curves of the load with different configurations were explored and used to build an offline database in the driver. The database also included the working points on the curves, making sure that the currents flow through all LEDs in the load smaller than the rated value. The driver collected the output voltage and output current, and the load structure was detected based on the curves stored in the offline database. According to the load structure, the output current was adaptively adjusted to make the load at its working point. LLC converter was used in the driver as driving circuit whose design principle was investigated. A prototype was tested under different mismatching cases. Results verify the effectiveness of the proposed adaptive load matching technology, indicating that this technology can improve the reliability of the driver and the load by making the driver match the load automatically.

Published: 01 June 2016
CLC:  TM 923  
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HU Jin, JIN Xiao guang, LIN Hui pin, ZHOU Feng wu, LU Zheng yu. Advanced adaptive load matching technology used in LED driver. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(6): 1095-1102.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008973X.2016.06.012     OR     http://www.zjujournals.com/eng/Y2016/V50/I6/1095


LED驱动器自适应负载匹配技术

为了提高LED驱动器与负载的可靠性,提出并实现LED驱动器自适应负载匹配技术.阵列式LED负载在运行过程中由于损坏可能会变成不同结构的负载.在驱动器中建立各种结构负载对应的伏安特性曲线数据库,并确定对应的工作点,使工作点上负载内所有LED的电流不超出额定值.驱动器通过采集负载的电压、电流,并与数据库中各种伏安特性曲线上的电压、电流对比,判断出当前负载的结构,并输出相应的电流,使负载工作在该结构的工作点上,避免负载进一步损坏.采用LLC变换器作为驱动电路,并研究其设计原则.样机及实验验证了该技术的有效性,表明该技术使得驱动器能与负载自动匹配,从而提高驱动器与负载的可靠性.

［1］ TAN S C. General nlevel driving approach for improving electricaltooptical energyconversion efficiency of fastresponse saturable lighting devices ［J］. IEEE Transactions on Industrial Electronics, 2010, 57(4)： 1342-1353.
［2］ AZEVEDO I L, MORGAN M G, MORGAN F. The transition to solidstate lighting ［J］. Proceedings of the IEEE, 2009, 97(3)： 481-510.
［3］ CHEN Y, WU X K, QIAN Z M, et al. Design and optimization of a wide output voltage range LED driver based on LLC resonant topology ［C］ ∥ Power Electronics and ECCE Asia (ICPE and ECCE). Jeju: IEEE, 2011: 2831-2837.
［4］ SHRIVASTAVA A, SINGH B. LLC series resonant converter based LED lamp driver with ZVS ［C］ ∥ Power India Conference, 2012 IEEE Fifth. Murthal: IEEE, 2012: 15.
［5］ WANG H M, LIU Z L, DONG J. Highpower LED constantcurrent driver circuit design and efficiency analysis ［C］ ∥ Cross Strait QuadRegional Radio Science and Wireless Technology Conference (CSQRWC). Harbin: IEEE, 2011: 705-710.
［6］ LEE L M, HUI S R Y. Automatic lamp detection and operation for warmstart tubular fluorescent lamps ［J］. IEEE Transactions on Power Electronics, 2009,24(12)：2933-2941.
［7］ STMicroelectronics. AN2640: intelligent multipower digital ballast for fluorescent lamps ［EB/OL］. \[20151210\]. http:∥www.st.com/web/en/resource/technical/document/application_note/CD00173891.pdf
［8］ JIA Z R, LV X F, XU B W, et al. An automatic fluorescent lamp detection method without igniting the lamps ［C］ ∥ Applied Power Electronics Conference and Exposition (APEC), 2012 TwentySeventh Annual IEEE. Orlando: IEEE, 2012: 2392-2397.
［9］ LOPES J D P, MENKE M F, BISOGNO F E, et al. Automatic lamp detection technique for fluorescent lamps electronic ballasts ［C］∥Industry Applications Society Annual Meeting (IAS). Las Vegas: IEEE, 2012: 18.
［10］ LV X F, JIA Z R, JIN C, et al. An Adaptive control strategy for automotive HID lamps based on lamp temperature ［C］ ∥ Energy Conversion Congress and Exposition (ECCE). Raleigh: IEEE, 2012: 1208-1213.
［11］ SPINI C. STMicroelectronics, AN3106: 48 V130 W highefficiency converter with PFC for LED street lighting applications ［EB/OL］.\[20151210\]. http:∥www.st.com /web/en/resource/technical/document/application_note/CD00256070.pdf
［12］ AUGUSTONI G. STMicroelectronics, AN916: TSM101 in S.M.P.S ［EB/OL］. ［2016316］. http:∥www.st.com /stwebui/static/active/en/resource/technical/document/application_note/CD00003999.pdf
［13］ STEIGERWALD R L. A comparison of halfbridge resonant converter topologies ［J］.  IEEE Transactions on Power Electronics, 1988. 3(2)：174-182.
［14］ KIRSTEN A L, MARCO A, DALLA C, et al. Digital control strategy for HID lamp electronic ballasts ［J］. IEEE Transactions on Industrial Electronics, 2013,60(2): 608-618.
［15］ MOO C S, LEE K H, YEN H C. Profiling starting transient of fluorescent lamp with highfrequency electronic ballast ［J］. IEEE Transactions on Plasma Science, 2009,37(12)：2353-2358.
［16］ WANG Y J, XU D G, WANG W, et al. Electronic ballast for metal halide lamps using a quasiresonant inverter with digital control ［J］. IEEE Transactions on Industrial Electronics, 2011, 59(4)：1825-1840.
［17］ LU B, LIU W D, LIANG Y, et al. Optimal design methodology for LLC resonant converter ［C］ ∥ Applied Power Electronics Conference and Exposition, 2006. APEC ′06. Dallas: IEEE, 2006: 533-538.
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