Results 51 to 60 of about 712 (184)
IEEE Access, 2020 A self-adaptive controller is proposed to operate inverter in both grid-connected (GC) state and stand-alone (SA) state and ensure seamless transfer between them without reconfiguring the control structure.
Xin Meng +4 more
doaj +1 more source
Research on multi-VSG fast pre-synchronization grid connection with dual power loop
Energy 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 +1 more source
Frontiers in Energy Research, 2022 Maritime island grids based on renewable energy are being rapidly developed, which poses a new challenge to the traditional pre-synchronization process of grid connection.
Jianquan Shi +3 more
doaj +1 more source
Characteristics of estrus and manipulation of the estrous cycle to impact fertility of beef females [PDF]
, 2021 Reproductive efficiency of beef females directly impacts the overall efficiency and profitability of cow-calf operations. By making use of reproductive management technologies, such as estrus synchronization, presynchronization, and sex-sorted semen ...
Oosthuizen, Nicola
core +1 more source
Journal of Animal ScienceData were collected to evaluate the incorporation of chorionic gonadotropin (hCG) into the presynchronization portion of the 7 & 7 Synch protocol for postpartum beef cows.
Genevieve M. VanWye +6 more
semanticscholar +1 more source
, 2012 The objective of this study was to compare circulating progesterone (P4) profiles and pregnancies per AT (P/AI) in lactating dairy cows bred by timed artificial insemination (TAT) following Ovsynch-56 after 2 different presynchronization protocols ...
Nascimento, Anibal B. +11 more
core +1 more source
Energy 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 +1 more source
Dose and Frequency of PGF2α Administration to Lactating Dairy Cows Exposed to Presynchronization and Either Five- or Seven-day Ovsynch Protocols: Ovulation, Luteolysis, and Pregnancy Rates [PDF]
, 2017 Lactating Holstein cows in one herd were milked three times daily and enrolled in a 2 × 2 × 2 factorial design with eight treatments before first postpartum artificial insemination (AI). These treatments were employed to test ovulatory, progesterone, and
Stevenson, J. S. +3 more
core +1 more source
Research on pre-synchronization control strategy of the micro-grid with multi-VSG
Global Energy Interconnection, 2018 Seamless switching is an important guarantee for the inverter to work continuously without stopping when grid-connected power generation system is the transient process from grid-connected to isolated island and from isolated island reclosing.
Tao Yan +6 more
doaj +1 more source
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This paper presents an LQR‐based strategy for seamless transition between grid‐forming and grid‐following inverters in microgrids. The proposed design integrates the comprehensive control loops of the grid‐forming and grid‐following inverters. A systematic, gradient‐based optimization framework is used for selecting the weighting matrices.
Adel Tatish, Kanchapogu Vaisakh
wiley +1 more source