Reactive-power compensation for voltage control at resistance welders

@article{Baldwin2005ReactivepowerCF,
  title={Reactive-power compensation for voltage control at resistance welders},
  author={T L Baldwin and T. Hogans and S. Henry and F. Renovich and P. T. Latkovic},
  journal={IEEE Systems Technical Conference on Industrial and Commercial Power 2005.},
  year={2005},
  pages={1-9}
}
Resistance welders are a source of voltage fluctuations and flicker in industrial power distribution systems. The high-reactance welding transformer that limits the welding current creates a low-power-factor (pf) load. With hundreds of welders, factories may use synchronized welding cycles that lead to annoying flicker. Other facilities use random timing to prevent flicker, but suffer deep voltage sags due to simultaneous welding operations. Severe voltage variations reduce the power delivered… CONTINUE READING
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