Results 161 to 170 of about 5,131 (213)

Potential and Challenges in LVRT for Grid-Forming Wind Turbines Brought by the Emergence of New Power Modules With Enhanced Short-Circuit Current

IEEE transactions on power electronics
Improving the short-circuit current capability of converters can directly enhance the low-voltage ride-through (LVRT) performance of doubly-fed induction generator (DFIG) based wind turbine systems (WTS).
Siying Xu, Han Wang, Dang-Sheng Zhou, Chen Zhang, Yu Zhang, Xu Cai   +5 more
semanticscholar   +1 more source

Quantitative Design of Virtual Impedance for LVRT Strategy of VSG

2021 3rd Asia Energy and Electrical Engineering Symposium (AEEES), 2021
The virtual synchronous generators (VSGs) face the risk of overcurrent when grid voltage sags occur. Although existing literatures have applied virtual impedance to VSG, aiming for suppressing overcurrent, rare papers mentioned how to meet the standards that the inverters output sufficient reactive power to power grid for low voltage ride-through (LVRT)
Liu Hang, Wang Yue, Liu Yonghui, Peng Yang, Shu Sirui, Liu Zengzhe   +5 more
openaire   +1 more source

Research of SC for Improving LVRT Capability of FSIG

Advanced Materials Research, 2012
The fast development of wind power generation brings new requirements for wind turbine integration to grid. In order to improve the lower voltage ride through(LVRT) capability of fixed speed induction generator(FSIG) in wind power generating systems, the mathematic model of FSIG, supercapacitor(SC) and converter is built in DIgSILENT in this paper.
Guo Qing Li, Li Meng Wang
openaire   +1 more source

Hybrid LVRT Control of Doubly-Fed Variable Speed Pumped Storage to Shorten Crowbar Operational Duration

IEEE transactions on power electronics
Crowbar is the most widely used low voltage ride-through (LVRT) solution for doubly-fed variable speed pumped storage (VSPS) unit. However, the conventional crowbar solution suffers from excessive crowbar activation period when applied to large-scale ...
Dong-Hai Zhu, Zhen Wang, Yumei Ma, Jia-Bing Hu, X. Zou, Yong Kang   +5 more
semanticscholar   +1 more source

A Multi-Machine Equivalent Model of a Wind Farm Considering LVRT Characteristic and Wake Effect

IEEE Transactions on Sustainable Energy, 2022
The wind turbines (WTs) present in a wind farm (WF) are subjected to varying wind speeds owing to the wake effect. Additionally, the response of a WF is also affected by the low voltage ride-through (LVRT) characteristic imbibed in each doubly-fed ...
Akhil Gupta, Arindam Mitra, A. Mohapatra, S. N. Singh   +3 more
semanticscholar   +1 more source

Transient Synchronization Stability and Enhanced-LVRT Scheme for Grid-Forming Converters Considering Current Limitation and Nonlinear Damping Simultaneously

IEEE transactions on energy conversion
Due to the fragile overcurrent capability, it is necessary to embed the current limitation into the control system of the grid-forming (GFM) converter.
Hui-Qiang Sun, Xin-Chun Lin, Juntian Wei
semanticscholar   +1 more source

Enhancement of the LVRT Capability for DFIG-Based Wind Farms Based on Short-Circuit Capacity

IEEE Systems Journal, 2022
In this article, an advanced transient voltage control (A-TVC) strategy is proposed to enhance the low-voltage ride-through (LVRT) capability of a doubly fed induction generator (DFIG)-based wind farm (WF). In severe voltage dip (VD) conditions, the DFIG-
Z. Rafiee, R. Heydari, Mansour Rafiee, M. Aghamohammadi, F. Blaabjerg   +4 more
semanticscholar   +1 more source

Design and development of a mobile LVRT testing device

IEEE PES Innovative Smart Grid Technologies, 2012
A new type LVRT test device, basing on power electronics technology, has been developed. Compared with traditional reactor VGS, this device overcomes many drawbacks, such as bulky size, difficult to control precision, and difficult to continuously testing. Considering the characteristics of distributed system accessing to the grid by photovoltaic power
Xiaojin Lin, Beibei Wu, Junjun Zhang, Chenhui Niu   +3 more
openaire   +1 more source

Transient Stability Analysis and Improved Control Strategy for DC-Link Voltage of DFIG-Based WT During LVRT

IEEE transactions on energy conversion, 2022
In this paper, the transient stability for dc-link voltage of doubly-fed induction generator (DFIG)-based wind turbine (WT) is studied in detail during low voltage ride-through (LVRT).
Shiyue Chen, Jun Yao, Jin-Xin Pei, Yuan Liu, Rui-Kuo Liu, Sen Huang, Zhaoyang Chen   +6 more
semanticscholar   +1 more source

Interaction Mechanism Analysis and Synchronization Stability Control for Paralleled PLL-VSCs System during LVRT

2023 IEEE International Conference on Power Science and Technology (ICPST), 2023
Due to the weak immunity of power electronic devices, the phase-locked loop-synchronized voltage source converters (PLL-VSCs) face severe transient instability risk during low voltage ride through (LVRT).
Sen Huang, Jun Yao, Y. Lin, Yi-Qin Luo
semanticscholar   +1 more source