Results 21 to 30 of about 559,157 (245)

Generalized state space model and small signal stability analysis of Z-source converter [PDF]

Archives of Electrical Engineering, 2023
This paper proposes two nonlinear exact and simple state space models of a Zsource converter (ZSC) connected to an ac grid. A generic model of a ZSC accompanied with proper controllers are proposed and a dynamic model of the whole system is derived; as a
Masoud Jokar Kouhanjani, Sina Soltani, Mohammad Mardaneh   +2 more
doaj   +1 more source

DC microgrid small-signal stability and control: Sufficient stability criterion and stabilizer design

Sustainable Energy, Grids and Networks, 2021
Abstract The behavior of constant power loads is known to be a potential cause of instability in DC microgrids. This issue is addressed by the DC microgrid stabilizer proposed in this paper. It relies on active stabilization through power electronic control by introducing a virtual positive resistance to counteract the negative incremental resistance
Moustafa Adly, Kai Strunz
openaire   +1 more source

Small Signal Stability Analysis and Optimize Control of Large-Scale Wind Power Collection System

IEEE Access, 2022
The frequency security problem of power system is highlighted as wind power penetration increases yearly, the eigenvalue analysis method based on the deterministic model is difficult to accurately evaluate the small signal stability of power system.
Limei Li, Hui Jiang, Peihong Yang, Pengxiang Fan, Pan Qi, Lan Kang   +5 more
doaj   +1 more source

Stability Analysis in a Direct-Current Shipboard Power System with Parallel Permanent Magnet Synchronous Generators and Supercapacitor Integration

Journal of Marine Science and Engineering
This paper investigates the small-signal stability of a DC shipboard power system (SPS) with the integration of a supercapacitor. As an efficient energy storage solution, supercapacitors can not only provide rapid energy response to sudden power demand ...
Qinsheng Yun, Xiangjun Wang, Shenghan Wang, Wei Zhuang, Wanlu Zhu   +4 more
doaj   +1 more source

Small Signal Stability of a Power System

International Journal of Recent Technology and Engineering (IJRTE), 2019
Power system (PS) stability is a major concern for an electrical power system (PS) in the past decades. Small signal stability (SSS) is a class of stability of the power system (PS) determined by eigenvalue analysis. The dynamic performance of the linearized power system (PS) model is determined by small signal stability (SSS) analysis by calculation ...
Abhinav Pathak*, Ratnesh Gupta
openaire   +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

Electromagnetic torque analysis-based method for performance evaluation and optimisation of closed-loop CPS regarding small signal stability

IET Cyber-Physical Systems, 2018
Low frequency oscillation occurs frequently in the smart grid, which threatens the security and stability of the physical system. Wide-area damping controller (WADC), which belongs to cyber system, can effectively ...
Yibiao Sheng, Tao Lin, Rusi Chen, Baoping Chen, Guili Ding, Xialing Xu, Chang Xie, Lin Liu   +7 more
doaj   +1 more source

Static and dynamic eigenvalues in unified stability studies

IET Generation, Transmission & Distribution, 2022
A framework for unified analysis of small‐signal and large‐signal power system stability based on static and dynamic eigenvalues is proposed in this paper. The presented implementation is based on Gear's method, which is a two‐step integration method for
Jalal Khodaparast, Olav Bjarte Fosso, Marta Molinas, Jon Are Suul   +3 more
doaj   +1 more source

Comprehensive small-signal stability analysis for master hybrid MMC connected with strong and weak AC systems

Energy Reports, 2021
The small-signal stability problem of power electronic converters has always been a critical concern for safe operation. This paper conducts a comprehensive analysis of the small-signal stability for the hybrid modular multilevel converter (MMC), which ...
Xiaojun Lu, Mengbo Li, Xiao Lei, Zhangbin Yang, Daixiao Peng, Daijun Luo   +5 more
doaj   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski, Michael C. Frühwald, Gudrun Fleischhack, Stephan Tippelt, Pablo Hernáiz‐Driever, Olaf Witt, Astrid Gnekow, Christof Kramm, Matthias Eyrich, Johannes E. A. Wolf, Hermann Müller, Carsten Friedrich, Uwe R. Kordes, Denise Obrecht‐Sturm, Petra Ketteler, Barbara von Zezschwitz, Pascal Johann, Dominik Sturm, Karoline Nemes, Stefan Schönberger, Till Milde, Brigitte Bison, Monika Warmuth‐Metz, Torsten Pietsch, Ulrich Schüller, Arend Koch, David Capper, Martin Hasselblatt, Christian Thomas, Christian Hagel, Stefan M. Pfister, Felix Sahm, David T. W. Jones, Martin U. Schuhmann, Jürgen Krauss, Pedram Emami, Ahmed El Damaty, Rolf D. Kortmann, Rudolf Schwarz, Jürgen Debus, Mechthild Krause, Fabian Pohl, Holger Ottensmeier, Lisa Bußenius, Katja Baust, Andreas Faldum, Cecile Ronckers, Desiree Grabow, Martin Benesch, Thomas Perwein, Karin Dieckmann, Irene Slavc, Johannes Gojo, Nicolas U. Gerber, André O. von Bueren, Katrin Scheinemann, Gabriele Calaminus, Beate Timmermann, Ulrich‐Wilhelm Thomale, Martin Mynarek   +59 more
wiley   +1 more source