کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
704245 | 891234 | 2008 | 10 صفحه PDF | دانلود رایگان |

This paper presents a novel improved topology of voltage-fed soft-switching LCrCdc series–parallel quasi-resonant inverter with a constant-frequency for electronic ballast applications. This new topology introduces a low-cost solution to reduce switching losses to achieve high-efficiency ballast. A symmetrical pulse wide modulation (PWM) control scheme is implemented to regulate a wide range of output power. Switching losses effect on ballast efficiency is discussed through experimental point of view. In this discussion, an improved topology in which accomplishes soft-switching operation over a wide power regulation range is proposed. Energy consumption of this new circuit is decreased by using reverse recovery attribute. Additionally, a power-factor correction (PFC) circuit is employed to make the line current follow naturally the sinusoidal line voltage waveform.Simulation results are favorably verified with the experimental measurements in 20 W ballast-lamp laboratory prototype. Different load conditions are provided in order to clarify the behavior of the proposed converter.
Journal: Electric Power Systems Research - Volume 78, Issue 6, June 2008, Pages 975–984