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초록
The LED has the proportional characteristic between the flux of light and its current and has caused voltage-current deviation on production process. Thus the unbalancing of each LED strings current occurred by its characteristic deviation. This unbalancing reduce a uniformity of the flux of light. Therefore, we researched to design method the LED driver based on DSP and the balancing transformer for a LED current balancing. These are applied to 50W LED module consist of 4 parallel strings. We analyzed the reduction of LED currents unbalance by experimental result from each method.
키워드
LED Strings Currents Unbalance; LED Driving Circuit; DSP; Balancing Transformer
- 제목
- LED 조명용 구동장치에서 열간 전류의 불평형 감소방법
- 제목 (타언어)
- The Reduction Method of Strings Current Unbalancing in LED Lighting Driving System
- 저자
- 박종연; 송재욱; 유진완
- 발행일
- 2013-05
- 유형
- Y
- 저널명
- 조명.전기설비학회논문지
- 권
- 27
- 호
- 5
- 페이지
- 26 ~ 32