D.  Krishna, M.  Sasikala, V.  Ganesh, 
    Adaptive FLC Based UPQC in Distribution Power Systems for Power Quality Problems,
    Agricultural Journal,
    Volume 15,Issue 6,
    2020,
    Pages 149-157,
    ISSN 1816-9155,
    aj.2020.149.157,
    (https://makhillpublications.co/view-article.php?doi=aj.2020.149.157)
    Abstract: This study proposes UPQC to enhance all
Power Quality issues. The UPQC is outlined by
consolidating a series APF and shunt APF. The adaptable
FLC together with Series APF controls the voltage
distortion. Shunt APF’s operation is controlled by d-q
axes current from load current and DC-interface voltage
is maintained through adaptable FLC. The stationary and
transient action of controller circuit in various load current
and variable voltage conditions is discussed. A versatile
FLC is planned for the plant when its parameters are
changing. The UPQC is used with static and switching
nonlinear burdens. It can reduce voltage sag/swell,
voltage variations and eliminates harmonics and so on.
The proposed controller is implemented by using
MATLAB.
    Keywords: UPQC;adaptive FLC;voltage sag/swells;active power filter MATLAB/Simulink