Results 231 to 240 of about 3,961 (251)

Twenty Switch Three Level CHB Based UPQC

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019
This paper proposes a novel twenty switch three-level cascaded H bridge (CHB) based UPQC for the mitigation of multiple power quality problems. The proposed topology is developed by using five H bridge and two DC link capacitance, so it saves four semiconductor switches and one DC link capacitance compared to the conventional three-level CHB based UPQC.
V Muneer, Avik Bhattacharya
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UPQC Signal Detecting Method with Trigonometric Functions

2012 Asia-Pacific Power and Energy Engineering Conference, 2012
Power quality is the most important problem in power grid. The Unified Power Quality Conditioner (UPQC) is a multi-function device which can settle many power quality problems at the same time. A novel signal-detecting method is proposed in this paper. The new method is only 4 times multiplication, one difference algorithm and 2 divisions.
Zuquan Liang, Mengbo Zhu, Wei Yin
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Mitigation of power quality issues using UPQC

International Journal of Emerging Electric Power Systems, 2020
Abstract Power quality has become major concern these days due to application of power electronic devices. Conventional equipment like passive filter, segregate series and shunt filters and synchronous condenser etc. have become inadequate to mitigate different power quality problems.
Pravat Kumar Ray, Santanu Kumar Dash, Bidyadhar Subudhi, Suratsavadee K. Korkua   +3 more
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A UPQC controller design based on SMVSC

2013 5th International Conference on Power Electronics Systems and Applications(PESA), 2013
To achieve the coordination control of voltage and current compensation with excellent system robust, a unified power quality conditioner (UPQC) controller design procedures based on sliding mode variable structure control (SMVSC) is proposed. First, making use of high self-adaptability and strong robustness of SMVSC, linearization and decoupling ...
Zhou Hailiang, Gao Shun, Liu Yong, Ran Yong   +3 more
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Complex wavelet based control strategy for UPQC

2010 Joint International Conference on Power Electronics, Drives and Energy Systems & 2010 Power India, 2010
This paper discusses the utilization of complex continuous wavelet transform based on B-spline function for reference voltages and currents extraction which are used for compensating power quality disturbances by using unified power quality conditioner. The major advantages of choosing B-spline function are the reduction of computation time and ease of
N. Karthikeyan, Mahesh K. Mishra, B. Kalyan Kumar   +2 more
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Performance of UPQC for Power Quality improvement

2010 Joint International Conference on Power Electronics, Drives and Energy Systems & 2010 Power India, 2010
This paper deals with a Unified Power Quality Conditioner (UPQC) for load balancing, power factor-correction, voltage regulation, voltage and current harmonics mitigation, mitigation of voltage sag, swell and voltage dip in a three-phase three-wire distribution system for different combinations of linear and non-linear loads.
Yash Pal, A. Swarup, Bhim Singh
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Comparison between UPQC, iUPQC and improved iUPQC

2017 Third International Conference on Sensing, Signal Processing and Security (ICSSS), 2017
In this paper a new proposal for the control of power quality is made by interline unified power quality conditioner (iUPQC) and comparison is shown with conventional unified power quality conditioner. Improved iUPQC controller provides additional regulation as STATCOM to grid voltage.
Sayali Paithankar, Ranjit Zende
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UPQC compensation strategy and design aimed at reducing losses

Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on, 2002
After showing how the UPQC is able to-compensate for network voltage variations through different operating strategies, one such strategy is proposed whose aim is to limit the total losses of the device. An estimate was made of the extent of the losses of converters as a function of the DC section voltage and of the maximum injectable voltage from the ...
FARANDA, ROBERTO SEBASTIANO, I. Valadè
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STATCOM and UPQC: options to enhance fault-ride-through capability of a fixed speed wind generator

6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), 2012
The enhancement of fault-ride through (FRT) capability of a Fixed Speed Induction Generator (FSIG) with the help of a Unified Power Quality Conditioner (UPQC) and STATCOM are examined in this paper. The FRT performance of these equipments are evaluated and compared in accordance with Irish Grid Code requirement. A simulation study carried out on a 2 MW
Jayanti, N. G., Basu, Malabika, Conlon, Michael F., Gaughan, Kevin   +3 more
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Coordinated control strategy for UPQC and its verification

2006 IEEE Power Engineering Society General Meeting, 2006
This paper researches profoundly on the coordinated control of UPQC (unified power quality conditioner). By analyzing the radical reasons of coupling effect between UPQC series unit and shunt unit, a simple and practical coordinated control strategy for UPQC series unit and shunt unit is proposed, i.e.
null Peng Li, null Qian Bai, null Gengyin Li   +2 more
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