Results 131 to 140 of about 2,450 (157)
Some of the next articles are maybe not open access.
Performance evaluation of R-UPQC and L-UPQC based on a novel voltage detection algorithm
2012 IEEE Symposium on Industrial Electronics and Applications, 2012This paper proposes a new method to detect voltage imperfections such as balanced/unbalanced voltage sag/swell, voltage flicker, and voltage disturbance in a single or three-phase electrical systems with excellent performance characteristics. The proposed method is based on single-phase synchronous d-q reference frame transformation. In contrast to the
B. S. Mohammed +3 more
openaire +1 more source
Operating Region of Single-Phase UPQCs
IEEE 36th Conference on Power Electronics Specialists, 2005., 2006The stationary analysis of a single-phase unified power quality conditioner is introduced. The decomposition of a single-phase waveform into a sum of sine and cosine functions gives a representation of the original signals and at the same time allows to find the operating region of the system.
J.R. Reyes +2 more
openaire +1 more source
UPQC Controlled Solar PV-Hydro Battery Microgrid
2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2020This paper deal with the microgrid formed with distributed power generation resources feeding three-phase nonlinear loads. The squirrel cage induction generator (SCIG) based small hydro generation, the solar photovoltaic (PV) generation and the battery are used as distributed generation sources in this microgrid.
Sachin Tiwari, Seema Kewat, Bhim Singh
openaire +1 more source
A Novel UPQC based on variable impedance
2021 Power System and Green Energy Conference (PSGEC), 2021A unified power quality controller based on a magnetic flux control tunable reactor is proposed. The magnetic flux control tunable reactor is composed of a voltage source inverter (VSI) and a transformer with an air gap. The power quality controller is divided into two parts: the harmonic open circuit part is connected in series in the system, and the ...
Zhao Shaofeng +5 more
openaire +1 more source
A Novel Control Strategy for UPQC
2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005UPQC is the powerful tool to settle the power quality problem. This paper presents a novel control strategy of UPQC. It can be used in the system that voltage and current are unbalanced or/and with harmonics. Only the voltages and the currents measured are used in the control, it avoids the transformation like Park transformation of dq0 theory which is
null Shu Hongchun +3 more
openaire +1 more source
2014 9th IEEE Conference on Industrial Electronics and Applications, 2014
Traditional schemes of UPQC and OPEN UPQC are proposed in literature to solve both the voltage quality problem of the load and the current quality problem of the grid. However, the traditional UPQC is not flexible when configured to compensate an industrial park if not all loads are sensitive. The previously proposed OPEN UPQC scheme has the advantages
Tongzhen Wei, Dongqiang Jia
openaire +1 more source
Traditional schemes of UPQC and OPEN UPQC are proposed in literature to solve both the voltage quality problem of the load and the current quality problem of the grid. However, the traditional UPQC is not flexible when configured to compensate an industrial park if not all loads are sensitive. The previously proposed OPEN UPQC scheme has the advantages
Tongzhen Wei, Dongqiang Jia
openaire +1 more source
Twenty Switch Three Level CHB Based UPQC
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019This 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
openaire +1 more source
UPQC Signal Detecting Method with Trigonometric Functions
2012 Asia-Pacific Power and Energy Engineering Conference, 2012Power 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
openaire +1 more source
Mitigation of power quality issues using UPQC
International Journal of Emerging Electric Power Systems, 2020Abstract 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 +3 more
openaire +1 more source
A UPQC controller design based on SMVSC
2013 5th International Conference on Power Electronics Systems and Applications(PESA), 2013To 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 +3 more
openaire +1 more source