Results 11 to 20 of about 51,859 (300)

Research on multi-VSG fast pre-synchronization grid connection with dual power loop

open access: yesEnergy Reports, 2020
This paper researched on the pre-synchronization grid connection method of a virtual synchronous generator (VSG), and proposed a fast pre-synchronization method based on the virtual power loop. According to the self-synchronization characteristics of the
Chunxue Wen   +5 more
doaj   +4 more sources

Analysis and design of gradient descent based pre‐synchronization control for synchronverter [PDF]

open access: yesIET Renewable Power Generation, 2021
Synchronverter (SV) control has emerged as a popular method for distributed energy resources (DERs), to emulate response of a synchronous generator. In this work, a simple gradient descent based pre‐synchronization control for SV scheme is proposed that ...
Hariharan R, Mahesh K. Mishra
doaj   +2 more sources

A Pre-Synchronization Method for Parallel VSGs of Distributed Microgrid Based on Control Mode Switching

open access: yesEnergies, 2023
For the pre-synchronization method of the virtual synchronous generator (VSG), only the case of a single VSG pre-synchronization and grid connection has been studied and analyzed.
Kunyu Dong, Jiaoxin Jia
doaj   +3 more sources

Design and parameter analysis of an improved pre-synchronization method for multiple inverters based on virtual synchronization generator control in microgrid

open access: yesEnergy Reports, 2022
The microgrid is increasingly important because of the rapid development of renewable energy. Meanwhile, power converter is an important interface, where the stable operation of microgrid need effective inverter control strategy.
Liang Meng   +5 more
doaj   +3 more sources

Pre Synchronization Control Strategy of Virtual Synchronous Generator (VSG) in Micro-Grid

open access: yesIEEE Access, 2023
The constant increase of energy demand and the widespread adoption of renewable energy sources have led to the significant interest in micro-grids, which are small-scale power systems that utilize distributed energy resources.
Jianfeng Wang   +2 more
doaj   +2 more sources

292 Evaluation of two Beef cow Fixed-Time AI Protocols That Utilize pre-Synchronization [PDF]

open access: yesJ Anim Sci, 2022
Abstract Pre-synchronization has been evaluated as a method to improve synchrony of ovulatory follicles before fixed-time AI (FTAI). The objective was to compare FTAI results in beef cows from two protocols that utilize pre-synchronization.
Jaclyn N Ketchum   +14 more
europepmc   +2 more sources

Competing with lower level opponents decreases intra-team movement synchronization and time-motion demands during pre-season soccer matches. [PDF]

open access: yesPLoS ONE, 2014
This study aimed to quantify the time-motion demands and intra-team movement synchronization during the pre-season matches of a professional soccer team according to the opposition level.
Hugo Folgado   +3 more
doaj   +3 more sources

A Novel Pre-Synchronization Control for Grid Connection of Virtual Synchronous Generator

open access: yesElektronika ir Elektrotechnika, 2020
The virtual synchronous generator (VSG) introduces rotational inertia and damping through the droop control to take part in frequency regulation of the grid.
Xuhai Chen   +6 more
doaj   +4 more sources

Fractal gait patterns are retained after entrainment to a fractal stimulus. [PDF]

open access: yesPLoS ONE, 2014
Previous work has shown that fractal patterns in gait can be altered by entraining to a fractal stimulus. However, little is understood about how long those patterns are retained or which factors may influence stronger entrainment or retention.
Christopher K Rhea   +6 more
doaj   +4 more sources

Efficacy of Pre-Synchronization and CIDR on the Outcome of Short-TermSynchronization Program in Zandi Ewes During the Breeding Season [PDF]

open access: yesIranian Journal of Veterinary Medicine, 2021
BACKGROUND: Timed breeding programs are essential to implementing extensive artificial insemination (AI) programs in sheep. OBJECTIVES: This study aimed to evaluate whether application of pre-synchronization and controlled internal drug releasing (CIDR ...
Reza Arjmandi   +4 more
doaj   +1 more source

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