Design and performance of digital ballast for HPS lamps

@article{Weiqiang2003DesignAP,
  title={Design and performance of digital ballast for HPS lamps},
  author={Zhang Weiqiang and Xu Dianguo and Chi-Hwan Lee},
  journal={Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03.},
  year={2003},
  volume={2},
  pages={1205-1208 vol.2}
}
This paper presents the design and performance of digital ballast for HPS lamps, which employs a 8-bit microprocessor to improve the starting technique and operate HPS lamp at rated power over the service life. The system offers the capability of dimming lamp from 100 % to 50 % power by changing the switching frequency of the inverter. It is also found that, under present experimental conditions, the lamp is free acoustic frequency and resistive operated at high frequency. The 3.2 kV ignition… CONTINUE READING