| Title |
A Study on High Efficiency Electronic Ballast for Metal Halide Discharge Lamps |
| Authors |
김해준(Kim, Hae-Jun) ; 원재선(Won, Jae-Sun) ; 박재욱(Park, Jae-Wook) ; 서철식(Seo, Cheol-Sik) ; 이성희(Lee, Seung-Hee) ; 심광열(Sim, Kwang-Yeal) ; 김종해(Kim, Jong-Hae) ; 김동희(Kim, Dong-Hee) |
| Keywords |
electronic ballast ; MHD lamp ; efficiency ; resonant inverter ; spread spectrum |
| Abstract |
A novel design technology for a high frequency electronic ballast for metal-halide discharge lamps is proposed. A PFC technique is adopted to get unit power factor and output frequency alteration technique is adopted to avoid acoustic resonance. For characteristics evaluation, the designed electronic ballast is presented using normalized parameter. To reduce losses of the ballast. ZVS control technique is adopted and the maximum flux density of magnetic core for inductor should be kept lower. The electronic ballast for 250[W] metal-halide discharge lamp is implemented and 96[%] efficiency and low conducted EMI level are accomplished. |