| Abstract |
An optimized FUZZY PID
controller for a single phase power factor
corrected converter (PFC) used in an on-line UPS
is proposed in this paper. The parameters of this
fuzzy logic PID controller such as input
membership functions, output membership
functions, inference rules are selected and
optimized by GENETIC ALGORITHMS (GA),
hence the tedious and time consuming
parameters tuning process normally associated
with a fuzzy logic controller design is eliminated.
The selection and optimization criteria is based
on time domain specifications such as response
time, percent of overshoot etc. for a step
reference. The simulation shows excellent results
in terms of response time and output overshoot
for a step reference. This design approach
provides an attractive method to select and
optimize the membership functions and inference
rules of a fuzzy logic controller when it is used to
control single phase PFC converter. |
