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Parasite nucleosomes: Chromatin dynamics rewired. [PDF]

PLoS Pathog
Deák G, Wilson MD.
europepmc   +1 more source

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Control of VSG gene expression sites

Molecular and Biochemical Parasitology, 2001
Trypanosoma brucei survives in mammals by antigenic variation of its surface coat consisting of variant surface glycoprotein (VSG). Trypanosomes change coat mainly by replacing the transcribed VSG genes in an active telomeric expression site by a different VSG gene.
P Borst, Sebastian Ulbert
exaly   +3 more sources

Controls of the expression of the Vsg in Trypanosoma brucei.

Molecular and Biochemical Parasitology, 1998
We present an overview of the regulation of vsg expression, focusing on initiation and elongation of transcription as well as processing and stabilization of the transcripts. We propose a model where common factors are involved in the reverse controls of the genes for the two main stage-specific antigens, the Vsg and procyclin: a cross-talk between the
Vanhamme, Luc, Pays, Etienne
openaire   +4 more sources

Sequence Impedance Modeling and Stability Comparative Analysis of Voltage-Controlled VSGs and Current-Controlled VSGs

IEEE Transactions on Industrial Electronics, 2019
The premise that the virtual synchronous generator (VSG) can actively support the weak grid is that the VSG can operate stably. In this paper, the small-signal sequence impedance models of the voltage-controlled VSG and the current-controlled VSG are built and the sequence impedance characteristics of these two types of VSGs are compared and analyzed ...
Wenhua Wu 0001, Yandong Chen 0001, Leming Zhou, An Luo, Xiaoping Zhou, Zhixing He, Ling Yang 0001, Zhiwei Xie 0001, Jinming Liu, Mingmin Zhang   +9 more
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An Improved VSG control strategy for Microgrid

2021 IEEE International Conference on Electrical Engineering and Mechatronics Technology (ICEEMT), 2021
New energy power generation system, droop control field and ship distributed system have been widely used the control strategy of virtual synchronous generator (VSG). However, the traditional VSG control strategy neglects power decoupling ability and inertia in the torque governor and excitation control.
Fangying Zhu, Zishun Peng, Wen Hu, Huan Wang, Chun Zhang, Zhenxing Zhao, Yuxing Dai   +6 more
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VSG Simplified Damper Winding: Design Guidelines

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019
The growing spread of renewable energy sources has brought the issue of providing virtual inertia to the electric power system. Virtual Synchronous Generators (VSGs) are a valid solution capable of adding inertial behavior to static grid-tied converters.
Fabio Mandrile, Enrico Carpaneto, Radu Bojoi   +2 more
openaire   +1 more source

On the Spectral Efficiency of VSG CDMA in Nakagami and Rician Fading

IEEE Transactions on Wireless Communications, 2007
This paper presents new analytical expressions for the spectral efficiency of Variable Spreading Gain Code Division Multiple Access (VSG CDMA) networks in a Nakagami and Rician fading environments. These are used to gain insight into the impact of fading and background noise on the optimal transmit powers. Numerical results for a dual class and 5-class
Khairi Ashour Hamdi, Pongsatorn Sedtheetorn   +1 more
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Suppressing power oscillation based on VSG

2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2017
To stabilize the voltage and frequency, virtual synchronous generator (VSG) control of renewable energy interfaced inverter is recommended. However, traditional VSG control will lead to unbalanced three-phase current and power oscillation under unbalanced grid voltage. To solve these problems, an improved control strategy is proposed. Firstly, problems
Chao Wang, Jian Wu, Dongran Yang, Jiaqi Zhao   +3 more
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Transient Angle Stability Comparison of Paralleled VSGs system and Hybrid System Comprised by VSG and Diesel Generator

2019 IEEE Energy Conversion Congress and Exposition (ECCE), 2019
This paper investigates transient angle stability of parallel system of two virtual synchronous generators (VSGs) and hybrid system comprised by VSG and diesel generator (DG). Compared to single grid-connected VSG, the paralleled VSGs system and hybrid system are facing larger challenges on stability aspect during serious faults.
Huijie Cheng, Ying Cheng, Zhikang Shuai, Chao Shen, Zhiyong Yuan, Ke Zhou, John Shen   +6 more
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