Results 81 to 90 of about 1,034,905 (229)

Analysis on the Amplification Effect of Diode Rectifier Unbalance Input Current

Kongzhi Yu Xinxi Jishu, 2019
It is hard to design the filter of diode rectifier due to the input current amplification effect. In order to offer more precise guidance to filter parameter design, this paper brings about this amplification phenomenon by an analysis method which is ...
LIU Fei, ZHOU Ben, WANG Ting
doaj  

Multilevel Converters: An Enabling Technology for High-Power Applications [PDF]

, 2009
| Multilevel converters are considered today as the state-of-the-art power-conversion systems for high-power and power-quality demanding applications.
García Franquelo, Leopoldo, Kouro, Samir, León Galván, José Ignacio, Martín Prats, María de los Ángeles, Portillo Guisado, Ramón Carlos, Pérez, Marcelo, Rodríguez, José   +6 more
core  

Phases-controlled coordinated charging method for electric vehicles

CES Transactions on Electrical Machines and Systems, 2018
When private electric vehicles (EVs), which will be the main part of the EVs' cluster in the future, are plugged in power system by single phase power line, can result to three-phase unbalance problem of distribution network.
Chenglin Liao, Bing Yang
doaj   +1 more source

Experimental dynamic stiffness and damping of externally pressurized gas-lubricated journal bearings [PDF]

A rigid vertical shaft was operated with known amounts of unbalance at speeds to 30,000 rpm and gas supply pressure ratios to 4.8. From measured amplitude and phase angle data, dynamic stiffness and damping coefficients of the bearings were determined ...
Cunningham, R. E., Fleming, D. P., Thayer, W. J.   +2 more
core   +1 more source

Technical SWOT analysis of decentralised production for low voltage grids in Flanders [PDF]

, 2012
The increasing energy prices, combined with high funding by the government, has resulted in a massive integration of decentralised electrical energy production units in Belgium.
Debruyne, Colin, Desmet, Jan, Vandevelde, Lieven, Verhelst, Bart   +3 more
core  

Rotor vibration caused by external excitation and rub [PDF]

, 1982
For turbomachinery with low natural frequencies, considerations have been recently required for rotor vibrations caused by external forces except unbalance one, such as foundation motion, seismic wave, rub and so forth.
Kaga, M., Kikuchi, K., Matsushita, O., Takagi, M.   +3 more
core   +1 more source

Optimal Planning of Hybrid AC/DC Low-Voltage Distribution Networks Considering DC Conversion of Three-Phase Four-Wire Low-Voltage AC Systems

Journal of Modern Power Systems and Clean Energy
The increasing integration of distributed household photovoltaics (PVs) and electric vehicles (EVs) may further aggravate voltage violations and unbalance of low-voltage distribution networks (LVDNs).
Bo Zhang, Lu Zhang, Wei Tang, Gen Li, Chen Wang   +4 more
doaj   +1 more source

The influence of cracks in rotating shafts

, 2008
In this paper, the influence of transverse cracks in a rotating shaft is analysed. The paper addresses the two distinct issues of the changes in modal properties and the influence of crack breathing on dynamic response during operation.
A.W. Lees, Adewusi, Bently, Cameron, Chen, Cheung, Darpe, Davies, Dimarogonas, Doebling, Friswell, Gasch, Gounaris, Huang, J-J. Sinou, Jun, Lalanne, Lee, Ling, Mayes, Muszynska, Narayanan, Nayfeh, Penny, Prabhakar, Prabhakar, Pugno, Sekhar, Sekhar, Sekhar, Tsai, Wauer, Wu   +32 more
core   +1 more source

Experimental study on Gaussian-modulated coherent states quantum key distribution over standard telecom fiber

, 2007
In this paper, we present a fully fiber-based one-way Quantum Key Distribution (QKD) system implementing the Gaussian-Modulated Coherent States (GMCS) protocol. The system employs a double Mach-Zehnder Interferometer (MZI) configuration in which the weak
Bing Qi, C. H. Bennett, D. Mayers, E. Biham, Hoi-Kwong Lo, Lei-Lei Huang, Li Qian, M. Legre, R. Loudon   +8 more
core   +1 more source

New data acquisition system records bearing measurements directly [PDF]

, 1970
Digital data acquisition system records steady state and dynamic data of bearing and shaft displacement. Elliptical orbits formed can be reconstructed and the data reduced automatically. System also reads pressures, temperatures, flows, and torque during
Rossbach, R. J.
core   +1 more source