TY - JOUR
T1 - High efficiency metal halide discharge lamp ballast with an internal igniter and low ripple lamp current
AU - Lee, I. K.
AU - Cho, B. H.
PY - 2007
Y1 - 2007
N2 - This is a proposal for a half-bridge type metal halide discharge (MHD) lamp ballast with a coupled inductor and a frequency-controlled synchronous rectifier. To avoid using an external igniter, the internal LC resonance of a buck converter is used to generate a high-voltage pulse for the ignition. A coupled inductor filter is used for steady state ripple cancellation. This filter allows the MHD lamp to avoid the acoustic resonance phenomenon. To improve the efficiency of the ballast, a synchronous buck converter is used for the DC/DC converter stage and a frequency control method is proposed. This scheme reduces the circulation current and turn-off loss of the metal-oxide semiconductor field effect transistor (MOSFET) switch in the constant power operation, which results in an increase of the efficiency of the ballast system compared to fixed frequency control. A front-end power factor correction circuit is included in the ballast. This proposal zis verified with hardware experiments.
AB - This is a proposal for a half-bridge type metal halide discharge (MHD) lamp ballast with a coupled inductor and a frequency-controlled synchronous rectifier. To avoid using an external igniter, the internal LC resonance of a buck converter is used to generate a high-voltage pulse for the ignition. A coupled inductor filter is used for steady state ripple cancellation. This filter allows the MHD lamp to avoid the acoustic resonance phenomenon. To improve the efficiency of the ballast, a synchronous buck converter is used for the DC/DC converter stage and a frequency control method is proposed. This scheme reduces the circulation current and turn-off loss of the metal-oxide semiconductor field effect transistor (MOSFET) switch in the constant power operation, which results in an increase of the efficiency of the ballast system compared to fixed frequency control. A front-end power factor correction circuit is included in the ballast. This proposal zis verified with hardware experiments.
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U2 - 10.1049/iet-epa:20060315
DO - 10.1049/iet-epa:20060315
M3 - Article
AN - SCOPUS:34248340035
VL - 1
SP - 291
EP - 298
JO - IET Electric Power Applications
JF - IET Electric Power Applications
SN - 1751-8660
IS - 3
ER -