Control Scheme of Voltage Sag Compensator Using Bi-Directional

lzmyl

Abstract — A novel voltage sag compensator with Bi-
directional  DC/DC  converter  of  double-layer  capacitor  is
proposed.  Recently,  the  double-layer  capacitor  which  has
drawn attention as a new energy storage element has a lot of
advantage such as no maintenance, long lifetime, and quick
charge/discharge  characteristics  with  large  current.  This
capacitor  is  attached  to  the  DC  link  of  voltage  sag
compensator  system  through  the  high-efficiency  DC/DC
converter in order to compensate the DC link voltage drop
during short-term power interruption as voltage sags.
This  DC/DC  converter  is  used  to  control  the  charging
current to the double-layer capacitor and also used to keep the
DC link  voltage  constant  for  discharge of the double-layer
capacitor. Therefore, the proposed DC/DC converter has the
high-efficiency  controller,  dynamic  compensator  of  voltage
sag  is  driven  by  this  converter.  Finally,  simulation  and
experimental results show the validity of the control scheme
and the ability of the voltage compensator.

hypo_qu

太高深了，看不明白

[ 本帖最后由 hypo_qu 于 2008-11-20 15:03 编辑 ]