Journal of Materials Science and Engineering with Advanced TechnologyAuthor's: Marah Mariam and Hassan Kenjrawy
Pages: [91] - [109]
Received Date: March 18, 2021; Revised March 25, 2021
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100122190
Recently the use of sensitive electronic devices has increased, and
the quality of energy has become an important factor in electrical
power systems, where disturbances occurring in the network (harmonics,
swell, voltage sag, etc.) affect consumers and lead to
technical-economic damages. One of the most prominent solutions to
address energy quality problems is the UPQC (Unified Power Quality
Conditioner).
In this paper, the unified power quality conditioner used to improve
the electrical power quality in the distribution networks was
discussed, where the Park transformations are used to obtain the
required reference signals, and also the use of adaptive hysteresis
band to generate the electronic switch pulses in both serial and shunt
switches, where the pulse width is determined by dependence on fuzzy
logic.
The studied system was validated by simulating different distortion
cases and comparing the results when using the Sinusoidal Pulse Width
Modulation (SPWM) to control the two switches. The results showed
improvement in the electrical power quality through the use of an
adaptive hysteresis band controller, and that appeared by reducing the
total distortion factor (THD%), which resulted in improving the shape
of both the voltage and current waveforms.
unified power quality conditioner, power quality, adaptive hysteresis band, total distortion factor THD%.
