Abstract
A unified power quality conditioner (UPQC) plays a crucial role in the Power quality improvement of a power system. In this paper, a reduced switch multilevel inverter is with artificial neural network, soft computing technique control is proposed for UPQC. This proposed topology is employed for the mitigation of various power quality issues such as voltage sag, voltage swell, power factor, harmonics, and restoration time of voltage compensation. To show the enriched performance of the proposed topology comparative analysis is made with other two topologies of UPQC such as Conventional UPQC and UPQC using cascaded H bridge (CHB) five-level Inverter. All configurations are analysed using Matlab with variable nonlinear loads to analyse the performance during the conditions mentioned above.
Highlights
In recent days, consumers and electric utilities like drives, power converters are concentrating on electric power quality [1,2]
Various topologies of unified power quality conditioner (UPQC) using PI and ANN controllers are analysed for power quality enhancement in the distribution network
The power quality performance of each configuration is analysed under sag and swell conditions in the aspects of voltage compensation, restoration time for compensation, total harmonic distortion, and power factor
Summary
Consumers and electric utilities like drives, power converters are concentrating on electric power quality [1,2]. Most of the described configurations of UPQC in the literature are established with traditional two-level inverter [13] Still, it has a drawback augmented switching losses and harmonic content as an alternate, Multilevel inverter (MLI) configuration is applied in recent days. The inverter associated in shunt amid the load performs like a shunt active power filter (SAPF) remunerates load current harmonics while sustaining up the dc interface voltage consistent. Another inverter is associated in series to the network and keeps up the load voltage steady. UPQC is equipped for enriching the power quality at the PCC in the power framework It is one of the good solutions for the electrical utility that is sensitive to voltage harmonics
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