Results 31 to 40 of about 20,833,215 (297)

Active Damping of VSC-MTDC Grid Equipped With Interline Power Flow Controller

IEEE Access, 2022
To ensure the secure operation of a multiterminal high-voltage DC (MTDC) grid, power flow controllers (PFCs) are deployed to regulate current distribution among different transmission lines. Besides power flow management, PFCs are envisioned to provide a
Hassanien Ramadan A. Mohamed, Yasser Abdel-Rady I. Mohamed   +1 more
doaj   +1 more source

Comparison of Different Virtual Inertia Control Methods for Inverter-based Generators

Journal of Modern Power Systems and Clean Energy, 2020
With the rapid development of inverter-based generators (IGs), power grid is faced with critical frequency stability challenges because the existing IGs have no inertia.
Dawei Sun, Hui Liu, Shunan Gao, Linlin Wu, Peng Song, Xiaosheng Wang   +5 more
doaj   +1 more source

Quasi-Z-Source Inverter-Based Photovoltaic Power System Modeling for Grid Stability Studies

Energies, 2021
Quasi-Z-source inverters (qZSIs) are becoming a powerful power conversion technology in photovoltaic (PV) power systems because they allow energy power conversion in a single stage operation.
Lluís Monjo, Luis Sainz, Juan José Mesas, Joaquín Pedra   +3 more
doaj   +1 more source

Y-Source Two-Stage Matrix Converter and Its Modulation Strategy

IEEE Access, 2020
Aiming at the defect of low voltage transfer ratio of two-stage matrix converter(TSMC), the proposed topology combines the Y-source network with the TSMC to form the Y-source two-stage matrix converter(YSTSMC) in this paper, and proposes its modulation ...
Rutian Wang, Pengfei Zhao, Jian Wang, Henan Hao   +3 more
doaj   +1 more source

Small Signal Model for VSC-HVDC Connected DFIG-Based Offshore Wind Farms

Journal of Applied Mathematics, 2014
Large-scale offshore wind farms are integrated with onshore ac grids through the voltage source converter based high voltage direct current (VSC-HVDC) transmission system. The impact on the stability of the ac grids will be significant.
Kai Liao, Zheng-you He, Bin Sun
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

A Transient Damping Improvement Strategy for Enhancing Grid-Connected Active Power Response Performance of VSG

Energies
The given power and grid frequency disturbances can cause transient oscillations and steady-state deviations in the output power of a virtual synchronous generator (VSG), which can be effectively addressed by adding transient damping.
Yan Xia, Yang Chen, Renzhao Chen, Ke Li, Huizhu Li, Jinhui Shi, Yiqiang Yang   +6 more
doaj   +1 more source

Dynamic interaction between synchronous machine and DC-power-modulated LCC in electromechanical timescale

The Journal of Engineering, 2018
Active power modulation of line-commutated converter (LCC)-based high-voltage direct current (HVDC) system is increasingly utilised, especially for the case of damping low-frequency oscillation associated with synchronous machine (SM) in ...
Jiazuo Hou, Shicong Ma, Xuan Gong, Jiabing Hu   +3 more
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan, Michael Abele, Calogero Virgone, Michaela Kuhlen, Ricardo Lopez‐Almarez, Tal Ben‐Ami, Ewa Bien, Maja Cesen, Malgorzata A. Krawczyk, Andrea Ferrari, Gianni Bisogno, Yves Reguerre, Dominik T. Schneider, Louise Galmiche, Jorg Fuchs, Sarah Braungart, Bilgehan Yalcin, Ines B. Brecht, Daniel Orbach   +18 more
wiley   +1 more source

Comprehensive Analysis and Design of Current-Balance Loop in Constant On-Time Controlled Multi-Phase Buck Converter

IEEE Access, 2020
Constant on-time (COT) controlled multi-phase buck converter has been widely used in high-current applications such as computing devices to achieve high entire-load-range efficiency.
Ching-Jan Chen, Zih-Yuan Zeng, Ching-Hsiang Cheng, Fu-To Lin   +3 more
doaj   +1 more source