Results 11 to 20 of about 2,450 (157)

A New Control Strategy Based Multi Converter UPQC Using Fuzzy Logic Controller to Improve the Power Quality Issues [PDF]

Advances in Electrical and Electronic Engineering, 2014
A design of multiconverter unified power quality conditioner to improve the power quality issues is presents in this paper. Modified SRF theory and fuzzy logic controller technique are incorporated in this modelling.
Chandra Babu Paduchuri, Subhransu Sekhar Dash, Subramani Chinnamuthu   +2 more
doaj   +4 more sources

Application of a three‐phase unified power quality conditioner in a microgrid

IET Smart Grid
In power distribution systems, common issues such as voltage fluctuations, voltage instability, current harmonics, and power imbalances often arise, negatively impacting the stability and power quality (PQ) of the power system.
Tsung‐Hsun Wu, Shu‐Syuan Huang, Pei‐Yin Chen   +2 more
doaj   +2 more sources

Model‐Free Predictive Direct Control of Unified Power Quality Conditioner Based on Ultra‐Local Model

IET Energy Systems Integration
To enhance the robustness of the unified power quality conditioner (UPQC) with finite control set model predictive control (FCS‐MPC), direct control in the dq coordinate system faces challenges such as complex coordinate transformation, system coupling ...
Guifeng Wang, Jinling Ji, Xinxin Zhu, En Fang, Qigang Du, Chao Luo, Zhifang Lin   +6 more
doaj   +2 more sources

The unified power quality conditioner: the integration of series and shunt-active filters [PDF]

, 1998
This paper deals with unified power quality conditioners (UPQCs), which aim at the integration of series-active and shunt-active power filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reactive power, negative-sequence ...
Akagi, Hirofumi, Fujita, Hideaki
core   +1 more source

Control algorithms based on the active and non-active currents for a UPQC without series transformers [PDF]

, 2016
This study presents control algorithms for a new unified power quality conditioner (UPQC) without the series transformers that are frequently used to make the insertion of the series converter of the UPQC between the power supply and the load.
Arboleya P., Bruno Fernandes Exposto, Freijedo F.D., Iurie A., Joao Luiz Afonso, Jose Gabriel Pinto, Kesler M., Li G.J., Liccardo F., Luis Fernando Correa Monteiro, Mauricio Aredes, Monteiro L.F.C., Sng E.K.K., Wenyong G., Williems J.L., Xu Y.   +15 more
core   +1 more source

Balance control of grid currents for UPQC under unbalanced loads based on matching-ratio compensation algorithm [PDF]

, 2018
In three-phase four-wire systems, unbalanced loads can cause grid currents to be unbalanced, and this may cause the neutral point potential on the grid side to shift.
Chai, Xiuhui, Liu, Fanqi, Zhang, Chunjiang, Zhang, Jinlong, Zhang, Zhe, Zhao, Xiaojun   +5 more
core   +1 more source

Solar photovoltaic interconnected ZSI-unified power quality conditioner to enhance power [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2022
In order to ensure that all the connected Equipment in the distribution network operates smoothly, the voltage stability of photovoltaic (PV) integrated distribution systems is very important.
A. Raja, M. Vijayakumar, C. Karthikeyan
doaj   +1 more source

Performances Analysis on Power Quality Problems Mitigation by using Unified Power Quality Conditioner (UPQC)

JAREE (Journal on Advanced Research in Electrical Engineering), 2019
Nowadays, power quality is one of the major problems in electric power distribution system. The poor power quality at distribution level can affect the operation and performance of sensitive and critical loads.
May Phone Thit
doaj   +1 more source

Implementation of ANN Controller Based UPQC Integrated with Microgrid

Mathematics, 2022
This study discusses how to increase power quality by integrating a unified power quality conditioner (UPQC) with a grid-connected microgrid for clean and efficient power generation.
Hina Mahar, Hafiz Mudasir Munir, Jahangir Badar Soomro, Faheem Akhtar, Rashid Hussain, Mohamed F. Elnaggar, Salah Kamel, Josep M. Guerrero   +7 more
doaj   +1 more source

Design of two feeder three phase four wire distribution system utilizing multi converter UPQC with fuzzy logic controller [PDF]

, 2014
This paper proposes the instantaneous p-q theory based fuzzy logic controller (FLC) for multi converter unified power quality conditioner (MC-UPQC) to mitigate power quality issues in two feeders three-phase four-wire distribution systems.
Chinnamuthu, Subramani, Dash, Subhransu Sekhar, Paduchuri, Chandra Babu   +2 more
core   +2 more sources