Results 61 to 70 of about 9,521 (205)

Voltage sag compensation strategy for unified power quality conditioner with simultaneous reactive power injection

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
Unified power quality conditioner (UPQC) holds the capability of solving power quality problems, especially shows good performance in the voltage sag compensation.
Yunfei Xu   +3 more
doaj   +1 more source

Power quality improvement using adaptive unified power quality conditioner [PDF]

open access: yes, 2019
In recent years, the prolific use of power electronics devices to improve the overall energy efficiency for electrical systems has led to the deterioration of power quality (PQ) due to harmonic generation. These PQ problems, such as a distorted supply current drawn and a poor power factor at the supply side, have led to severe technical mishaps and ...
openaire   +2 more sources

Fuzzy Hysteresis Controller Based Unified Power Quality Conditioner for Voltage Fluctuations and Harmonic Isolation [PDF]

open access: yes, 2016
Power quality problem makes the consumer un satisfy.  FACTS devices such as UPQC are such devices to avoid power quality problems. This paper proposed an efficient hysteresis controller and fuzzy controller for unified power quality conditioner.
Kalyani, V
core   +1 more source

Comprehensive Power Quality Management for Transformerless Unified Power Quality Conditioner Under Multiple Operating Conditions

open access: yesShanghai Jiaotong Daxue xuebao
To address the power quality problems caused by power electronic loads, a two-leg topology-based transformerless unified power quality conditioner (TLTT-UPQC) is proposed, which can overcome the volume, weight, and magnetic saturation of power frequency ...
FU Zhe, ZHANG Qi, LIU Yang, WAN Bohao, WANG Ting, SUN Yanfei
doaj   +1 more source

Enhancing the LVRT Capability and Mitigation of Power Quality Issues Using UPQC of a Grid Connected Wind Conversion System [PDF]

open access: yes, 2017
In this paper unified power quality conditioner has been used to enhance low voltage ride through capability of grid connected wind conversion system taking Doubly fed induction generator (DFIG).
Boopathi, C.S   +2 more
core   +3 more sources

Evaluation of Reduced-Switch Seven-Level Converter-Based upqc with Hybrid Fuzzy-Feedforward Neural Network Algorithm

open access: yesBrazilian Archives of Biology and Technology
To improve the performance of end-user equipment in an electric utility distribution network, it is necessary to improve power quality (PQ). This paper presents PQ improvement in electric distribution network using seven-level five switch converter based
Veera Nagi Reddy Varampati   +2 more
doaj   +1 more source

A Novel IUPQC for Multi-Feeder Systems Using Multilevel Converters With Grid Integration of Hybrid Renewable Energy System

open access: yesIEEE Access, 2020
This paper presents a novel topology of interline unified power quality conditioner (IUPQC) for multi-bus/multi-feeder systems, capable of compensating both voltage and current imperfections simultaneously for power quality improvement.
T. Surya Prakash   +2 more
doaj   +1 more source

Power quality improvement using Unified Power Quality Conditioner (UPQC) [PDF]

open access: yes, 2019
The purpose of this project is to evaluate the effectiveness of control strategy of Unified Power Quality Conditioner (UPQC) in order to improve power quality problem in distribution system specifically harmonics distortion.
Abd. Jalil, Ashrif
core  

Significant implication of unified power quality conditioner in power quality problems mitigation [PDF]

open access: yes, 2019
This paper presents an analysis of a three-phase unified power quality conditioner (UPQC) in terms of design and performance. A back to back connection of a series compensator and a shunt compensator with a common DC-bus is utilized to build the UPQC ...
Hannan, M. A.   +4 more
core   +3 more sources

Implementing UPQC based Intelligent Islanding for the Microgrid System [PDF]

open access: yes, 2018
Increased penetration of small scale renewable energy sources in the electrical distribution network, improvement of power quality has become more critical than where the current harmonics or disturbances and level of voltage can vary widely.
, Priyanka S. Patil, Mr. V. S. Pawar
core   +2 more sources

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