Results 61 to 70 of about 134,723 (348)

A COMPUTER CALCULATION FOR TENTATIVE ELECTRICAL SYSTEM IMPROVEMENT BY REACTIVE POWER COMPENSATION CONSIDERING SYSTEM UNBALANCED [PDF]

, 2013
An improvement of unbalanced distribution system operation is carried out by reactive power compensation. The lagging reactive power demand is compensated by allocating a number of three-phase shunt capacitors.
Agus , Supardi, Agus, Ulinuha, Hasyim , Asy’ari   +2 more
core  

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Power Supply Options for a Naval Railgun

, 2017
Large railguns require powerful power supply units. At the French-German Research Institute of Saint-Louis (ISL) most experimental railguns are driven by power supply units based on capacitors.
Hundertmark, Stephan, Liebfried, Oliver
core   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Comprehensive Analysis of AC and DC Capacitor Banks for UPS Applications

International Journal of Electrical, Energy and Power System Engineering
This paper reviews the use of large DC aluminum electrolytic and AC polymeric film capacitors within Uninterruptible Power Supply (UPS) applications, focusing on aspects such as field aging, failure mechanisms, anticipated service life, and preventative ...
Tshepo Sithole, Vasudeva Rao Veerdhi, Thembelani Sithebe   +2 more
doaj   +1 more source

Self-precharge in single-leg flying capacitor converters [PDF]

, 2009
Flying Capacitor (FC) multilevel pulse width modulated (PWM) converters are an attractive choice due to the natural voltage balance property. During start-up of the converter, care has to be taken that the power switches are not exposed to voltage ...
Melkebeek, Jan, Ruderman, Alex, Thielemans, Steven   +2 more
core   +2 more sources

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

Synergistic Optimization of Harmonic Suppression and Loss Reduction in Distribution Networks Based on PSO

Zhongguo dianli
With the increasing complexity of distribution networks and the growing demand for power quality, harmonic pollution and network losses have become key factors affecting system stability and operational efficiency.
Zhipeng LI, Shaobo LIU, Hao YANG, Rui DONG, Chenfeng QI, Shuo SHEN, Peng ZHAO   +6 more
doaj   +1 more source

A Review on the Conventional Capacitors, Supercapacitors, and Emerging Hybrid Ion Capacitors: Past, Present, and Future

Advanced Energy & Sustainability Research, 2022
Electrochemical energy storage (EES) devices with high‐power density such as capacitors, supercapacitors, and hybrid ion capacitors arouse intensive research passion.
Jiale Sun, Bingcheng Luo, Huanxin Li
doaj   +1 more source

Single‐phase small capacitor motor drive system with high‐efficiency buck active power decoupling converter [PDF]

, 2022
Chao Zhang, Lei Xu, Xiaoyong Zhu, Yi Du, Li Quan   +4 more
openalex   +1 more source