Results 21 to 30 of about 1,438,926 (267)

Impedance Analysis of Battery Bidirectional DC-DC Converter

open access: yesIEEE Access, 2020
When a converter is composed of cascaded system with another unknown converter, the optimal design of the converter is especially important owing to stability of the cascaded systems. Battery `s model is introduced to analysis.
Jun Liu
doaj   +1 more source

Self-Sustained Turn-Off Oscillation of SiC MOSFETs: Origin, Instability Analysis, and Prevention

open access: yesEnergies, 2019
This paper presents a comprehensive investigation on the self-sustained oscillation of silicon carbide (SiC) MOSFETs. At first, based on the double pulse switching test, it is identified that the self-sustained oscillation of SiC MOSFETs can be triggered
Peng Xue   +4 more
doaj   +1 more source

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

open access: yesEnergy 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   +5 more
doaj   +1 more source

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

open access: yesIEEE 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   +1 more
doaj   +1 more source

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

open access: yesJournal 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   +5 more
doaj   +1 more source

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

open access: yesEnergies, 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   +3 more
doaj   +1 more source

Small-Signal Modeling of Mutual Saturation in Induction Machines [PDF]

open access: yesIEEE Transactions on Industry Applications, 2010
A small-signal model is derived for saturated induction machines. Inductances are allowed to saturate as a function of their own current (or flux), and the mutual saturation effect originating mainly from skewed or closed rotor slots is also included in the model.
Repo, Anna-Kaisa   +4 more
openaire   +4 more sources

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

open access: yesIEEE 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   +3 more
doaj   +1 more source

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

open access: yesJournal 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

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

open access: yesThe 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   +3 more
doaj   +1 more source

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