Results 121 to 130 of about 256 (163)

A unified power quality conditioner (UPQC) for simultaneous voltage and current compensation

Electric Power Systems Research, 2001
Abstract The paper discusses the topology and control of a unified power quality conditioner (UPQC) that can be used simultaneously in voltage or current control mode in a power distribution system. In the voltage control mode, the UPQC can force the voltage of a distribution bus to be balanced sinusoids.
Ghosh, Arindam, Ledwich, Gerard
openaire   +3 more sources

Compensation of voltage flicker using Unified Power Quality Conditioner (UPQC)

2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2014
Voltage flicker, which is a repetitive voltage magnitude change of low frequency, is one of the power quality problems. The problem is aggravated with the use of non-linear load. The paper presents the use of a Unified Power Quality Conditioner (UPQC) as a solution to voltage flicker. A simple control technique is proposed to control UPQC.
Arpit Agrawal, Pramod Agarwal, Premalata Jena   +2 more
openaire   +3 more sources

Modeling of unified power quality conditioner (UPQC) in distribution systems load flow

Energy Conversion and Management, 2009
This paper presents modeling of unified power quality conditioner (UPQC) in load flow calculations for steady-state voltage compensation. An accurate model for this device is derived to use in load flow calculations. The rating of this device as well as direction of reactive power injection required to compensate voltage to the desired value (1 p.u ...
M. Hosseini, H.A. Shayanfar, M. Fotuhi-Firuzabad   +2 more
openaire   +3 more sources

Three phase unified power quality conditioner (UPQC) for power quality improvement by using UVTG technique

2013 International Conference on Renewable Energy and Sustainable Energy (ICRESE), 2013
This paper presents the simulation of the unified power quality conditioner (UPQC) to mitigate voltage harmonics, voltage sag, voltage swell & current harmonics. The UPQC consists of series and shunt active power filter (APF), which are connected in cascade via a common dc-link capacitor.
S. N. Gohil, M.V. Makwana, K.T. Kadivar, G. J. Tetar   +3 more
openaire   +3 more sources

Novel unified power quality conditioner (UPQC) of two DC links connected with resistor

2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA), 2016
This paper proposed a novel topology, which series inverter and shunt inverter both have capacitors in DC links, and connected by a resistor. And then establish mathematical model and control transfer function. At last compare the performance of traditional UPQC, separate UPQC and proposed UPQC in sag, harmonic and unbalance condition.
Xiaogang Xu, Lanfang Li, Yingpin Wang, Yunxiang Xie, Xiaoyu Zhang, Zhiwu Zeng   +5 more
openaire   +3 more sources

Simple control strategies of the active filters within a unified power quality conditioner (UPQC)

2017 International Conference on Modern Power Systems (MPS), 2017
Unified power quality conditioner (UPQC) consists of combined shunt and series active power filters for improving both the power quality on the source side and on the load side. The paper presents a simple method for controlling the series filter under unbalanced and distorted load conditions by using a three phase locked loop (PLL).
Sergiu Ivanov, Marian Ciontu, Dumitru Sacerdotianu, Alexandru Radu   +3 more
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Conceptual Study of Unified Power Quality Conditioner (UPQC)

2006 IEEE International Symposium on Industrial Electronics, 2006
This paper deals with conceptual study of unified power quality conditioner (UPQC) during voltage sag and swell on the power distribution network. One of the peculiarities of UPQC is that it can inject voltage from 0deg to 360deg. Based on this injected voltage phase angle with respect to the utility or PCC voltage phase angle, UPQC can absorb or ...
V. Khadkikar, A. Chandra, A. Barry, T. Nguyen   +3 more
openaire   +1 more source

Power quality improvement of microgrids using unified power quality conditioner (UPQC): A scoping review

Electric Power Systems Research
Baseem Khan, Sreedhar Jadapalli, GV Swathi, Sumit Kumar Maitra, Pooja Singh, Umakanta Choudhury, Matheowos Lolamo Biramo   +6 more
openaire   +3 more sources

Unified power quality conditioner (UPQC): the principle, control and application

Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579), 2003
This paper deals with unified power quality conditioner (UPQC), which aims at the integration of series-active and shunt-active power filters. The main purpose of a UPQC is to compensate for voltage imbalance, reactive power, negative-sequence current and harmonics.
null Gu Jianjun, null Xu Dianguo, null Liu Hankui, null Gong Maozhong   +3 more
openaire   +1 more source

A single phase unified power quality conditioner (UPQC)

2016 IEEE International Conference on Power System Technology (POWERCON), 2016
This paper proposes a simple power circuit topology for single phase unified power quality conditioner (UPQC). The number of power circuit switches of conventional single-phase UPQC is reduced to half and hence it has resulted in considerable reduction of cost, weight, volume, protection circuits, power losses and control circuit complexity.
M. Tarafdar Hagh, M. Sabahi
openaire   +1 more source