无电解电容LED驱动电源纹波补偿控制策略综述

随着LED照明领域的不断拓展和人们对健康光源的迫切需要，LED光源的频闪问题备受关注。流经LED光源的纹波电流不但会引起频闪，还会对光度、比色性能和光效等造成不良影响。无电解电容LED驱动电源纹波补偿控制能有效兼顾长寿命和低纹波等性能指标的优化设计，从而为人们提供高效节能且更加健康的LED光源。通过归纳分析无电解电容AC-DC LED驱动电源的关键技术和纹波补偿控制策略，对大功率无电解化LED驱动电源合理化指标要求、拓扑结构、小信号模型、自适应数字电流预测控制、自适应纹波补偿控制和高频能量同步传输控制等进行了展望，并针对工程应用提出了相应的实现思路，以期助推绿色健康LED驱动电源的研究。

Review of Ripple Compensation Control Strategies for Electrolytic Capacitor-less LED Driver

With the continuous expansion of the field of LED lighting and the urgent need for healthy light sources, the flicker problem of LED light sources has attracted much attention. The ripple current flowing through a LED light source not only causes flicker, but also causes adverse effects on luminosity, colorimetric performance and luminous efficacy. The ripple compensation by an electrolytic capacitor-less LED driver can effectively take into account the optimization design of performance indexes such as long life and low ripple, so as to provide people with high-efficiency, energy-saving and more healthy LED light sources. In this paper, the key technologies and ripple compensation control strategies for electrolytic capacitor-less AC-DC LED driver are summarized and analyzed. In addition, for engineering applications, the rational index requirements, topology, small signal model, adaptive digital current prediction control, adaptive ripple compensation control, and high-frequency energy synchronous transfer control of the electrolytic capacitor-less LED driver with high power are projected, which is expected to promote the research on green and healthy LED drivers.