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Electronic Ballast with Constant Power Output Controller for 250W MH Lamp

  • Jung Dong-Youl (Dept. of Electrical Engineering, Kangwon National University) ;
  • Park Jong-Yeon (Dept. of Electrical Engineering, Kangwon National University)
  • Published : 2006.09.01

Abstract

In this paper, an electronic ballast was developed to control a 250W metal halide lamp. To avoid acoustic resonance phenomenon, we calculated the acoustic resonance band and determined the driving frequency from 70kHz to 100kHz. Due to the switching loss of MOSFET, many problems are caused in the inverter circuit during lamp lighting, so we reduced the loss by connecting the capacitor that minimizes the magnitude of the impulsive voltage. In this paper, the main point of research is to find the methods to operate the lamp on the rated output power. After detecting the current and the voltage of the lamp, we changed the driving frequency by adjusting the DC voltage level of the VCO input.

Keywords

References

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Cited by

  1. A Power-Control Scheme With Constant Switching Frequency in Class-D Inverter for Induction-Heating Jar Application vol.54, pp.3, 2007, https://doi.org/10.1109/TIE.2007.892741