变频控制 LLC 谐振恒流变换器研究

吉林大学学报(信息科学版) ›› 2023, Vol. 41 ›› Issue (2): 242-250.

变频控制 LLC 谐振恒流变换器研究

王金玉, 吕鹏

(东北石油大学电气信息工程学院, 黑龙江大庆 163318)

收稿日期:2022-05-17 出版日期:2023-04-13 发布日期:2023-04-16
通讯作者: 吕鹏(1997— ), 男, 内蒙古通辽人, 东北石油大学硕士研究生, 主要从事电力电子与电力传动研究, (Tel)86-18647251710(E-mail)1852733003@ qq. com
作者简介:王金玉(1973— ), 男, 济南人, 东北石油大学教授, 硕士生导师, 主要从事电力电子与电力传动和信号检测与处理研究, (Tel)86-13504662418(E-mail)949053778@ qq. com;

Research on LLC Resonant Converter of Variable Frequency Control Constant Current

WANG Jinyu, LÜ Peng

(School of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163318, China)

Received:2022-05-17 Online:2023-04-13 Published:2023-04-16

摘要/Abstract

摘要： 为探索 LED(Light Emitting Diode)驱动的方法, 以期提高 LED 输出亮度的稳定性, 针对其控制恒流输出的问题提出了变频控制的 LLC 谐振变换器。设计的 LLC 半桥型谐振变换器具有开关工作频率高、掉电保持、允许输入电压范围宽、效率高、重量轻、体积小、 Electromagnetic Interference 噪声小和开关应力小等优点, 所以其是 LED 恒流输出很好的拓扑选择。采用变频控制方法, 结合 Power Simulation 软件进行了仿真分析, 仿真结果表明, 变频控制的 LLC 谐振变换器具有良好的稳态性能和瞬态性能, 对工程应用具有实际意义。

关键词: LED 驱动, 恒流输出, LLC 谐振变换器, 变频控制方法

Abstract: In order to explore the driving method of LED ( Light Emitting Diode), to improve the stability of LED output brightness, a LLC resonant converter controlled by frequency conversion to control the constant current output is proposed. LLC half-bridge resonant converter has the advantages of high switching frequency, power-off retention, wide allowable input voltage range, high efficiency, light weight, small size, low EMI (Electromagnetic Interference) noise, low switching stress, etc. Therefore, LLC half-bridge resonant converter is a good topology choice for LED constant current output. And the frequency conversion control method is adopted and the simulation analysis is carried out with PSIM(Power Simulation) software. The simulation results show that the LLC resonant converter controlled by frequency conversion has good steady-state performance and transient performance, which also has far-reaching significance for engineering applications.

Key words: ')">

, light emitting diode ( LED) drive, constant current output, LLC resonant converter, frequency conversion control method

中图分类号:

TP391. 9

王金玉, 吕鹏. 变频控制 LLC 谐振恒流变换器研究[J]. 吉林大学学报(信息科学版), 2023, 41(2): 242-250.

WANG Jinyu, LÜ Peng. Research on LLC Resonant Converter of Variable Frequency Control Constant Current [J]. Journal of Jilin University (Information Science Edition), 2023, 41(2): 242-250.