Results 11 to 20 of about 3,961 (251)

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

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

Journal 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, Xiangning Xiao, Yamin Sun, Yunbo Long   +3 more
doaj   +1 more source

Hybrid controller-based solar-fuel cell-integrated UPQC for enrichment of power quality

Paladyn, 2023
A fuzzy-integrated sliding mode-based hybrid controller (FISMHC) attributed to unified power quality conditioner (UPQC) was proposed in this study through implementation with solar integrated to fuel cell through incorporation of UPQC within sequence ...
Sai Sarita Narala Chitti, Suresh Reddy Sanna, Sujatha Peddakotla   +2 more
doaj   +1 more source

Hybrid UPQC arrangement for power quality improvement [PDF]

E3S Web of Conferences, 2021
In the forthcoming gap, throughout the world storage systems will carry the leading role, the reason is of providing energy in distant places. The utilization of storage elements in almost all applications are tremendously changed by the researchers. Here, mentioning the theory to increase the quality benefits in all corners of power utilization.
Prakash Vodapalli, Venkatesh C, Kumar C. Pavan   +2 more
openaire   +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

A non-linear controller design for UPQC in distribution systems

Alexandria Engineering Journal, 2018
In this article, a new approach based on non-linear control scheme was proposed for unified power quality conditioner (UPQC). The combination of sliding mode control and instantaneous active and reactive power theories was used to design this controller.
Mojtaba Yavari, Sayyed Hossein Edjtahed, Seyed Abbas Taher   +2 more
doaj   +1 more source

Adaptive Neuro-Fuzzy Controlled UPQC for Power Quality Enhancement in Renewable Energy Integrated Distributed Generation System [PDF]

E3S Web of Conferences
The growing integration of sustainable power sources into contemporary power distribution systems introduces various PQ issues, as well as, harmonic distortion, voltage fluctuations and reactive power imbalance.
Rao Pallapu Venkateswara, Kuthadi Kiran Kumar   +1 more
doaj   +1 more source

Solar PV Sustained Quasi Z-Source Network-Based Unified Power Quality Conditioner for Enhancement of Power Quality

Energies, 2020
In this article, a Quasi Z-source inverter (QZSI)-based unified power quality conditioner (UPQC) backed by the solar photovoltaic (SPV) is presented in order to enhance power quality. The UPQC consists of converters connected in parallel and series.
K. Muthuvel, M. Vijayakumar
doaj   +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