Results 51 to 60 of about 8,131,726 (133)

High-Frequency Induction Drive Analysis for Common Mode and Differential Mode Impedance Characteristics

Eng
The parasitic currents issue arises in induction machines operating at higher frequencies. The parasitic current flow is the main cause of premature degradation of winding insulation deterioration and bearing damage.
Kashif Imdad, Humayun Salahuddin, Zeeshan Ahmad Arfeen, Ghulam Amjad Hussain, Zeeshan Rashid, Nusrat Husain, Muhammad Salman Saeed   +6 more
doaj   +1 more source

Individualized low-frequency response manipulation for multiple listeners using chameleon subwoofer arrays

, 2011
Low-frequency acoustical responses are naturally position dependent across wide listening areas. This is predominantly due to room modes in small, closed spaces.
Adam J. Hill, Hawksford, Malcolm O. J., Hill, Adam J., Malcolm O. J. Hawksford   +3 more
core   +1 more source

An optical fibre-based frequency dissemination network for Australia

, 2011
An optical-fibre network is being planned for distribution of optical and microwave reference frequencies in Australia. This network would connect a number of research facilities and the National Measurement Institute (NMI), allowing long-range ...
Luiten, A., Orr, B., Wouters, M., Gray, M., He, Y., Shaddock, D., Hsu, M., Warrington, R., Aben, G., Baldwin, K.   +9 more
core   +1 more source

System-wide inertial response from fixed speed and variable speed wind turbines [PDF]

, 2011
IEEE PES 2011 General Meeting, Detroit, Michigan, USA, July 24-28, 2011As wind penetration levels on power systems increase worldwide, the dynamic characteristics of these systems are changing due to the displacement of synchronous generation. One issue,
Lisa Ruttledge, Ruttledge, Lisa, Flynn, Damian, Damian Flynn   +3 more
core   +1 more source

Frequency Response Analysis of State Space Models for Time Series Analysis

Earth and Space Science
State space models are well‐suited for time series in which the evolution of variables cannot be well represented by deterministic basis functions. A key challenge in using state space models is the selection of the noise variance parameters.
Koen Haakman, Cornelis Slobbe, Martin Verlaan   +2 more
doaj   +1 more source

Time effective structural frequency response testing with oblique impact [PDF]

, 2018
Structural frequency response testing is accurate in identifying the dynamic characteristic of a machinery structure. In practical perspective, conventional structural frequency response testing such as experimental modal analysis with impulse technique
Lian, Yee Cheng, Khoo, Shin Yee, Ong, Zhi Chao, Noroozi, Siamak, Ismail, Zubaidah   +4 more
core  

Asking difficult questions: task complexity increases the impact of response alternatives [PDF]

, 1992
Bless H, Bohner G, Hild T, Schwarz N. Asking difficult questions: task complexity increases the impact of response alternatives. European Journal of Social Psychology.
Hild, Traudel, Bless, Herbert (Universitaet Mannheim, Mannheim (Germany)), Schwarz, Norbert (Zentrum fuer Umfragen, Methoden und Analysen -ZUMA- e.V., Mannheim (Germany)), Schwarz, Norbert, Bless, Herbert, Bohner, Gerd (Universitaet Mannheim, Mannheim (Germany)), Herbert Bless, Traudel Hild, Gerd Bohner, Norbert Schwarz, Bohner, Gerd ; https://orcid.org/, Hild, Traudel (Universitaet Mannheim, Mannheim (Germany))   +11 more
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Frequency response computation for complex structures with damping and acoustic fluid

, 2004
textModal frequency response analysis is a very economical approach for large and complex structural systems since there is an enormous reduction in dimension from the original finite element frequency response problem to the number of modes ...
Kim, Chang-wan, 1969-
core  

Frequency-Power Control of VSWTG for Improved Frequency Regulation

, 2023
With increasing wind energy penetration and impending grid codes, it is important to enable wind-based power plants to provide sensitive frequency response in grids that may experience irregular frequency fluctuations with noise induced.
Asma Aziz (13059384), Amanullah Oo (13054650)   +1 more
core  

Numerical Simulation on the Frequency Response of 3-D Reef–Seawater–Seabed Coupling System Under Seismic Excitation

Journal of Marine Science and Engineering
The seismic safety evaluation of artificial reef islands is of great significance for ensuring their long-term stable operation and the safety of residents’ lives.
Liwen Yan, Xingwei Guo, Xunhua Zhang, Jianghao Qi   +3 more
doaj   +1 more source