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首页> 外文期刊>Power Electronics, IET >Buck converter-based power supply design for low power light emitting diode lamp lighting
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Buck converter-based power supply design for low power light emitting diode lamp lighting

机译:基于降压转换器的低功耗发光二极管灯照明电源设计

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摘要

This study deals with the analysis and implementation of an HPF (high power factor) single-stage, single switch buck converter-based power supply design for an LED (light emitting diode) lamp load of 13 W operated at the universal ac mains. In general purpose lighting applications, a buck converter is a good candidate for power factor correction with low component count and reduced cost. In low-power lighting, it is a tough task to control the THDi (total harmonic distortion) of ac mains current under the limits of strict international standards such as IEC-61000-3-2 with universal ac mains for class D equipments. In the proposed optocouplerless topology, HPF operation at input ac mains is achieved by operating the buck ac-dc converter in continuous conduction mode. The design, modelling and simulation of the proposed topology are executed using MATLAB-Simulink and sim-power system toolboxes. A prototype of the power supply for LED lamp is developed for multiple LEDs connected in series configuration. The efficiency of the proposed LED lamp driver is observed as 83.76% at rated voltage of 220 V and the THD of ac mains current less than 17.27% for a wide range of voltages of 90-270 V.
机译:本研究针对在通用交流电源下工作的13 W LED(发光二极管)灯负载的HPF(高功率因数)单级单开关降压转换器电源设计进行分析和实现。在通用照明应用中,降压转换器是功率因数校正的理想选择,其元件数量少且成本降低。在低功率照明中,要在严格的国际标准(例如IEC-61000-3-2)的限制下控制交流电源的THD i (总谐波失真)是一项艰巨的任务。 D类设备的交流电源。在提出的无光耦合器拓扑中,通过在连续传导模式下运行降压型ac-dc转换器,可以在输入交流电源上实现HPF操作。拟议拓扑的设计,建模和仿真是使用MATLAB-Simulink和sim-power系统工具箱执行的。针对串联连接的多个LED,开发了LED灯电源的原型。在额定电压为220 V的情况下,建议的LED灯驱动器的效率为83.76%,对于90-270 V的宽范围电压,交流电源电流的THD小于17.27%。

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  • 来源
    《Power Electronics, IET》 |2014年第4期|946-956|共11页
  • 作者

    Singh B.; Shrivastava A.;

  • 作者单位

    Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi, India|c|;

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  • 正文语种 eng
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