Results 31 to 40 of about 9,739 (121)
电力工程技术After the frequency support of grid-forming permanent magnet synchronous generator-based wind turbines (GFWTs) is completed, it is necessary to promptly restore the physical rotor speed to enable the GFWTs to re-operate at the maximum power point ...
Xiaoming ZOU, Chenggen WANG, Yingjie HU
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Journal of Marine Science and Engineering, 2023 The study of hydrodynamic characteristics of floating double-rotor horizontal axis tidal current turbines (FDHATTs) is of great significance for the development of tidal current energy. In this paper, the effect of roll motion on a FDHATT is investigated
Muyu Zhao, Ying Chen, Jin Jiang
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Separations, 2023 The improper disposal of retired lithium batteries will cause environmental pollution and a waste of resources. In this study, a waste lithium iron phosphate battery was used as a raw material, and cathode and metal materials in the battery were ...
Huabing Zhu +4 more
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Adaptive frequency support control strategy for wind farms based on rotor kinetic energy
电力工程技术With the large-scale integration of wind power into the grid, the inertia and disturbance resistance of the power system are gradually declining, leading to an increasingly prominent frequency stability issue.
YU Jingyi +5 more
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Stator Design and Air Gap Optimization of High Speed Drag-Cup Induction Motor using FEM
Advances in Electrical and Computer Engineering, 2013 A huge number of modern applications nowadays require the use of high speed electrical machines which need to be highly optimized in order to achieve the best efficiency and the lowest mass and price.
VUKOSAVIC, S. N. +2 more
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Active Frequency Support Control Strategy for Wind Farm Considering the Energy Discrepancy of Wind Turbines [PDF]
Dianli jianshe[Objective] Wind turbine generators generally operate in maximum power point tracking （MPPT） mode and do not provide inertial response and frequency support to the power grid.
LI Fengneng, YANG Ping, WEI Zhichu, CHEN Wenhao, ZHOU Qianyufan, WAN Siyang
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Dynamic power-based temporary frequency support scheme for a wind farm
Frontiers in Energy Research, 2022 Doubly fed induction generators can participate in frequency support following a disturbance by releasing their rotational energies. However, when regaining the rotor speed, a secondary frequency dip (SFD) tends to produce a sudden output drop.
Jiahan You, Dan Xu, Jiangdong Cao
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Advances in Electrical and Electronic Engineering, 2021 This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
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Chemical Engineering Transactions, 2017 The impact of crowbar resistance on low voltage ride through (LVRT) of doubly-Fed induction generator (DFIG) is researched. The relationship between the crowbar resistance and the rotor transient current and the attenuation rate of stator rotor transient
Wenjuan Zhang, Haomiao Ma, Feige Zhang
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Critical Speed Analysis of Fibre Reinforced Composite Rotor Embedded with Shape Memory Alloy Wires
International Journal of Rotating Machinery, 2000 In the present analysis, the fundamental natural frequency of a Jeffcott and a two-mass rotor with fibre reinforced composite shaft embedded with shape memory alloy (SMA) wires is evaluated by Rayleigh's procedure.
K. Gupta
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