Results 81 to 90 of about 144,241 (292)

Three-phase current-source shunt active power filter with solar photovoltaic grid interface [PDF]

, 2015
This paper presents the proposal of a three phase current source shunt active power filter (CS-SAPF) with photovoltaic grid interface. The proposed system combines the compensation of reactive power and harmonics with the injection of energy from a solar
Afonso, João L., Exposto, Bruno Fernandes, Meléndez, Andrés A. Nogueiras, Monteiro, Vítor Duarte Fernandes, Pedrosa, Delfim Duarte Rolo, Pinto, J. G.   +5 more
core   +1 more source

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source

New Reactive Power Compensation Strategies for Railway Infrastructure Capacity Increasing

Energies, 2020
In AC railway electrification systems, the impact of reactive power flow in the feeding voltage magnitude is one aspect contributing to the quality of supply degradation.
Vítor A. Morais, João L. Afonso, Adriano S. Carvalho, António P. Martins   +3 more
doaj   +1 more source

Voltage Multistability and Pulse Emergency Control for Distribution System with Power Flow Reversal [PDF]

, 2015
High levels of penetration of distributed generation and aggressive reactive power compensation may result in the reversal of power flows in future distribution grids.
Nguyen, Hung D., Turitsyn, Konstantin
core   +2 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Voltage and reactive power coordinated control strategy for flexible on-load tap changer

电力工程技术
As the increasing proportion of renewable energy and power electronic devices in the power grid, voltage fluctuations are becoming frequent. In response to the current voltage regulation and reactive power compensation requirements of the distribution ...
LIU Shui, ZHANG Shengqiang, TANG Weihua, WANG Song, YIN Jingyuan   +4 more
doaj   +1 more source

Multi-loop Control Systems of Compensators for Powerful Sounding Pulses Generators [PDF]

, 1996
Construction principles of multi-loop control systems of compensators for powerful sounding pulses generators are presented. A method for controlling a compensating system using fuzzy logic and forecast control ideas is described.
Knepper, M., Lugscheider, Erich, Wagner, W., Wahlmann, U.   +3 more
core  

A Modular Multilevel Flying Capacitor Converter-based STATCOM for Reactive Power Control [PDF]

, 2015
This paper presents a simulation study for a built prototype of modular multi-level flying capacitor cascade converter as a STATCOM. The converter modulation scheme applied is based on Phase Shifted PWM and the two scenarios which require compensation ...
Efika, IB, Nwobu, CJ, Oghorada, OJK, Zhang, L   +3 more
core   +1 more source

Performance Analysis of Shunt Reactive Power Compensators

2009 Third Asia International Conference on Modelling & Simulation, 2009
This paper offers comparative solutions for utility companies to solve the problem of voltage flicker in distribution systems. The solutions entail provision of shunt reactive compensation. Two solutions will be explored: the shunt capacitor and the Static VAR Compensator (SVC). Both solutions are modeled and simulated using PSCAD.
Taufik,, Schaefer, Emili, Anwari, Makbul, Taufik, Mohammad   +3 more
openaire   +3 more sources

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source