Results 31 to 40 of about 129,952 (301)

Load Modulation for Damping of Electro-Mechanical Oscillations

open access: yes, 2001
Today it is feasible for utilities to control selected customer loads in a nondisturbing fashion. This is comparable to load shedding, but has a wider area of application.
Lund University., Samuelsson, Olof,
core   +2 more sources

A Comprehensive Analysis of Bandwidth and Size for Four-Types of Series-Combined Transformer-Based Doherty Output Networks: Theory and Examples

open access: yesIEEE Access
This paper presents theory-driven design guidelines for four types of series-combined transformer (SCT)-based Doherty output matching networks to maximize bandwidth (BW).
Seokchul Lee, John D. Cressler
doaj   +1 more source

Coordinate strategy of dual-pulse-width-modulation converter based on direct power control with load power feed-forward

open access: yesMeasurement + Control, 2020
The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan   +3 more
doaj   +1 more source

Integrated Control Strategy for Electrolytic Aluminum Load Participation in Frequency Modulation

open access: yesIEEE Access, 2021
The introduction of electrolytic aluminum load in a large-scale power system with complex power station structure is essential for load frequency control (LFC). In this paper, we propose a control strategy for electrolytic aluminum load to participate in
Xin Shen   +3 more
doaj   +1 more source

Diagnosis of Combination Faults in a Planetary Gearbox using a Modulation Signal Bispectrum based Sideband Estimator [PDF]

open access: yes, 2015
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal ...
Gu, Fengshou   +12 more
core   +1 more source

Is Hand Selection Modulated by Cognitive–perceptual Load? [PDF]

open access: yesNeuroscience, 2018
Previous studies proposed that selecting which hand to use for a reaching task appears to be modulated by a factor described as "task difficulty". However, what features of a task might contribute to greater or lesser "difficulty" in the context of hand selection decisions has yet to be determined.
Jiali, Liang   +2 more
openaire   +2 more sources

Advancements in Doherty Power Amplifiers for High Efficiency, Broadband 5G, and Beyond

open access: yesIEEE Access
Doherty Power Amplifiers (DPAs) are pivotal in meeting the stringent demands of modern wireless communication systems, including 5G New Radio, Wi-Fi 7, and joint communication and sensing (JCAS), where high peak-to-average power ratios (PAPR), wide ...
Meysam Azimi-Roein   +2 more
doaj   +1 more source

Wind Turbine Load Optimization Control Strategy Based on LIDAR Feed-Forward Control for Primary Frequency Modulation Process with Pitch Angle Reservation

open access: yesEnergies, 2023
Because wind power is connected to the grid on a large scale, frequency fluctuation in the power grid, which is defined as a system safety risk to the power grid, occurs from time to time.
Deyi Fu   +5 more
doaj   +1 more source

The effects of self-report cognitive failures and cognitive load on antisaccade performance

open access: yes, 2011
Individuals reporting high levels of distractibility in everyday life show impaired performance in standard laboratory tasks measuring selective attention and inhibitory processes.
Nazanin Derakshan   +8 more
core   +1 more source

The brain locus of interaction between number and size: A combined functional magnetic resonance imaging and event-related potential study. [PDF]

open access: yes, 2007
Whether the human brain is equipped with a special neural substrate for numbers, or rather with a common neural substrate for processing of several types of magnitudes, has been the topic of a longstanding debate.
Berger, A   +17 more
core   +1 more source

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