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Transcript
A DEDICATED MICROCONTROLLER BASED FUZZY
CONTROLLED SHUNT ACTIVE POWER FILTER
SHAILENDRA KUMAR JAIN
Dept. of Elect. Engg.
M.A.N.I.T.
Bhopal, India
PRAMOD AGARWAL
Dept. of Elect. Engg.
I. I. T.
Roorkee, India
H.O. GUPTA
Dept. of Elect. Engg.
I. I. T.
Roorkee, India
ABSTRACT—This paper presents a dedicated micro-controller based fuzzy logic controller for
three-phase shunt active power filter. It is used to improve power quality by compensating
harmonics and reactive power requirement of non-linear loads. The compensation process proposed
is simple, which is based on sensing line currents and regulating the dc link voltage. It operates
without sensing the harmonic or reactive volt-ampere requirement of the load. Fuzzy logic control is
used to regulate the dc link voltage in place of the conventional PI controller, as the fuzzy control is
based on simple linguistic variables and does not require the mathematical model of the system.
Response of the fuzzy controller is compared with the conventional PI controller by simulation
study. An attempt is made to implement a complex control like fuzzy logic on an inexpensive 8-bit
micro-controller (INTEL 8031). Various experimental results are presented under steady state and
transient conditions.
33