Power Electronic Converters are commonly used in different applications because of
high efficiency and low cost. Due to latest advancement in semiconductor devices it is
difficult to draw the boundaries for applications of power electronic topologies. These
topologies are variable structure systems and generate harmonics during the operation
which will affect the power quality when are connected to system network.
Rectifier is a big family of converters and used when ac-dc conversion is needed. These
converters are widely used in distribution system. Therefore, it is necessary to predict
the harmonic levels of these converters and also observe their impacts on system
network.
Pakistan now days facing serious energy crises specially, in power sector due to
increase in load demand. To bridge the gap between load demand and generation of
electricity, various steps are taken by power companies and government. The steps
include the up gradation of existing power plants, generation of power from rental
power plants, installation of renewable power sources, taking different steps of demand
side management etc. But efforts of power companies on power quality is still lacking.
This research work focuses on power quality of the system network. In this work,
harmonics of single phase and three phase full bridge diode rectifiers are analyzed by
using the fast fourier transform method of MATLAB. The effects of harmonics on the
system network are also discussed