CAJ | 학술논문

传统的具有功率因数校正( power factor correction, PFC)功能的DC输出LED驱动器需要在输出端用容值较大的电解电容来减小输出电流纹波。为解决电解电容的使用寿命短而造成驱动器寿命低于LED寿命的问题,提出一种新型的AC LED拓扑电路结构,理论分析了该拓扑电路结构以及参数的选取。由于该驱动器的输入电压和输出电压都是脉动的,驱动器的输入输出滤波可采用容值较小的薄膜电容,从而提高了驱动器的使用寿命。通过仿真和试验的结果表明,该拓扑电路结构是可行的,其参数的选取是正确的。
전통적구유공솔인수교정( power factor correction, PFC)공능적DC수출LED구동기수요재수출단용용치교대적전해전용래감소수출전류문파。위해결전해전용적사용수명단이조성구동기수명저우LED수명적문제,제출일충신형적AC LED탁복전로결구,이론분석료해탁복전로결구이급삼수적선취。유우해구동기적수입전압화수출전압도시맥동적,구동기적수입수출려파가채용용치교소적박막전용,종이제고료구동기적사용수명。통과방진화시험적결과표명,해탁복전로결구시가행적,기삼수적선취시정학적。
Traditionally, a capacitor with large value is necessary to reduce the output voltage ripple for DC power supply. Life ex-pectancy of LED converter is always higher than that of the capacitor located in the output of the converter DC power supply. In order to solve this problem, a novel AC LED circuit topology structure is present, and the structure and the circuit parameters calculation are analyzed theoretically. For the structure, fluctuation demand of the DC power for LED converter is not high and capacitor with small value can be used. This results in high life expectancy for the capacitor. Results of simulation and experimental verify the feasibility and correctness of the circuit topology structure and parameter calculations.