COMPARATIVE STUDIES INTO RESONANCE DAMPING OF OUTPUT LCL FILTER FOR ACTIVE POWER FILTER WITH VOLTAGE SOURCE INVERTER
Edmund Kwafo Adjei-Saforo
Kumasi Technical University
Misbawu Adam
Kumasi Technical University
Samuel Addo Darko
Kumasi Technical University
Nchor Akansake
Kwame Nkrumah University of Science and Technology
Keywords: Resonance, Passive damping, Active power filter, LCL filter
Abstract
The active power filters are members of harmonic filtering family which is made up of embedded power electronic devices and it is used for enhancing power quality. However, while addressing harmonic distortion, an overcompensation stemming from step response might occur, leading an extended settling time, thus, driving the system into oscillation. Not all but also, the challenges associated with the control of output LCL filter of APF connected inverter originates from the resonance problem. Therefore, this paper analyses passive damping solutions to suppress the resonance problems of an LCL filter. Six passive damping remedies were considered, according to the location of the damping term. A capacitor with a series resistor, which is widely used is proposed among the six passive damping techniques. The simulations are carried-out using MATLAB/Simulink. The results, compared to others, depict the lowest total harmonic distortion (THD) as well as power loss at the fundamental frequency.
Author Biographies
Edmund Kwafo Adjei-Saforo, Kumasi Technical University
Faculty of Engineering and Technology
Misbawu Adam, Kumasi Technical University
Faculty of Engineering and Technology
Samuel Addo Darko, Kumasi Technical University
Faculty of Engineering and Technology
Nchor Akansake, Kwame Nkrumah University of Science and Technology
Faculty of Physical Sciences Computational Sciences