南通职业大学学报
南通職業大學學報
남통직업대학학보
JOURNAL OF NANTONG VOCATIONAL COLLEGE
2013年
4期
103-106
,共4页
大功率白光LED%恒流驱动%反激变换器%开路限压保护
大功率白光LED%恆流驅動%反激變換器%開路限壓保護
대공솔백광LED%항류구동%반격변환기%개로한압보호
high-power white LED%constant current%flyback converter%open circuit voltage protection
提出了一种新型大功率白光LED的驱动电源，其采用电流、电压、电流三环控制，既实现了恒流输出，又具有开路限压保护功能；与传统的LED驱动电路相比，具有结构简单、成本低、效率高等优点。文章详细分析了该电源的工作原理和系统的稳态特性，给出了设计方法和控制电路，最后通过一台220 V/50 Hz交流电供电、30 W/100 kHz的原理样机进行了实验验证。仿真和实验结果表明，该电源可满足大功率LED的驱动要求。
提齣瞭一種新型大功率白光LED的驅動電源，其採用電流、電壓、電流三環控製，既實現瞭恆流輸齣，又具有開路限壓保護功能；與傳統的LED驅動電路相比，具有結構簡單、成本低、效率高等優點。文章詳細分析瞭該電源的工作原理和繫統的穩態特性，給齣瞭設計方法和控製電路，最後通過一檯220 V/50 Hz交流電供電、30 W/100 kHz的原理樣機進行瞭實驗驗證。倣真和實驗結果錶明，該電源可滿足大功率LED的驅動要求。
제출료일충신형대공솔백광LED적구동전원，기채용전류、전압、전류삼배공제，기실현료항류수출，우구유개로한압보호공능；여전통적LED구동전로상비，구유결구간단、성본저、효솔고등우점。문장상세분석료해전원적공작원리화계통적은태특성，급출료설계방법화공제전로，최후통과일태220 V/50 Hz교류전공전、30 W/100 kHz적원리양궤진행료실험험증。방진화실험결과표명，해전원가만족대공솔LED적구동요구。
A new driver of high-power white LED is proposed in this paper, which adopts the tripple close-loop control including one voltage loop and two current loops, with the features of constant current output and open -circuit protection. Furthermore, compared with conventional LED drivers, this power takes the advantages of simple structure, low cost, high efficacy etc..In this paper, the operating principle of the power and the steady-state characteristics of the system are analyzed, and then design and control circuit are also presented. Finally, an experimental prototype rated at 220V/50Hz AC, 30W/100kHz has been implemented in laboratory. Simulation and experimental results show that the circuit can meet the requirements of high-power LED driver.
