IEEE Access, 2022 Due to advantages such as being clean and safe, photovoltaic (PV) generation has become an effective way to solve the energy crisis and environmental pollution problems. However, the PV inverter does not have inertia and damping characteristics. With the
Xueqing Li +4 more
doaj +1 more source
Mobile phone dependence, social support and impulsivity in Chinese university students [PDF]
, 2018 This study examined the frequency of mobile phone dependence in Chinese university students and explored its association with social support and impulsivity.
Chai, Jingxin +5 more
core +3 more sources
Modelling of synchronous generators for the analysis of frequency transients above 1 Hz/s [PDF]
Archives of Electrical Engineering, 2022 Large synchronous generators are of high importance for the stability of power systems. They generate the frequency of the system and stabilize it in case of severe grid faults like trips of large in-feeders or loads.
Alf Assenkamp
doaj +1 more source
Temperature dependence of the frequency and noise of superconducting coplanar waveguide resonators [PDF]
, 2008 We present measurements of the temperature and power dependence of the resonance frequency and frequency noise of superconducting niobium thin-film coplanar waveguide resonators carried out at temperatures well below the superconducting transition (Tc=9 ...
Day, Peter K. +5 more
core +1 more source
Influence of Continuous Provision of Synthetic Inertia on the Mechanical Loads of a Wind Turbine
Energies, 2021 In many electrical grids, the share of renewable energy generation increases. As these generators are typically connected to the grid via inverters, the level of grid inertia decreases.
Arne Gloe +4 more
doaj +1 more source
Apparent mass of small children: Experimental measurements [PDF]
, 2004 A test facility and protocol were developed for measuring the seated, vertical, whole-body vibration response of small children of less than 18 kg in mass over the frequency range from 1 to 45 Hz.
American Psychological Association (APA) +25 more
core +1 more source
Detection of cochlear hearing loss applying wavelet packets and support vector machines [PDF]
, 2004 The aim of this paper is to evaluate the application of the wavelet packet transform (WP) and support vector machines (SVM) to transient evoked otoacoustic emissions (TEOAE) in order to achieve a detection of frequency-specific hearing loss. We introduce
Dietl, H., Weiss, S.
core +1 more source
Positive words carry less information than negative words [PDF]
, 2012 We show that the frequency of word use is not only determined by the word length \cite{Zipf1935} and the average information content \cite{Piantadosi2011}, but also by its emotional content.
A Chmiel +45 more
core +2 more sources
A Grouping-Based Frequency Support Scheme for Wind Farm Under Cyber Uncertainty
IEEE Access, 2020 The injection of a significant amount of wind power tends to increase the difficulty of the grid frequency control. Therefore, wind farm (WF) has to have the ability to participate in system frequency support.
Yangyang Liu +3 more
doaj +1 more source
A numerical study of an inline oscillating cylinder in a free stream [PDF]
, 2011 Simulations of a cylinder undergoing externally controlled sinusoidal oscillations in the free stream direction have been performed. The frequency of oscillation was kept equal to the vortex shedding frequency from a fixed cylinder, while the amplitude ...
Leontini, Justin S. +2 more
core +3 more sources