Results 1 to 10 of about 1,446,654 (290)

Linear Active Disturbance Rejection Control for Flexible Excitation System of Pumped Storage Units

Energies
The role of pumped storage in global energy structure transformation is becoming increasingly prominent. This article introduces a flexible excitation system based on fully controlled device converters into pumped storage units (PSUs). It can address the
Bo Zhao, Jiandong Zheng, Jun Qin, Dan Wang, Jiayao Li, Xinyu Cheng, Sisi Jia   +6 more
doaj   +4 more sources

Novel Flexible Excitation System Based on MultilevelTopology Technology

Zhongguo dianli, 2019
Based on the development trend of the next generation power system, a novel flexible excitation system is designed based on three-level voltage source converter, and a matching five-level DC chopping circuit is proposed.
Kuayu WU, Jiancheng ZHANG, Long WU, Bing HAN, Le FANG, Cencen LU, Hongtao XIONG   +6 more
doaj   +2 more sources

Research on flexible excitation system applied to improve transient stability characteristics of the receiving-end power grid

Zhejiang dianli, 2022
The transient forced excitation of the traditional excitation system used for synchronous condenser is limited and unmaintainable. A flexible excitation system can improve the crest value of transient forced excitation and maintain the forced excitation ...
WANG Longfei, ZHANG Jiancheng, WANG Bowen, ZHUO Guying, HUA Wen, XIONG Hongtao   +5 more
doaj   +1 more source

Experimental Research on Vortex-Induced Force Characteristics of Flexible Riser with Buoyancy Module and Strakes

Applied Sciences, 2022
In this paper, the vortex-induced force characteristics of a flexible riser with buoyancy modules and strakes were experimentally investigated. The strain information caused by vortex-induced vibration (VIV) at different cross-sections on the flexible ...
Lusheng Jia, Yi Liu, Mengmeng Zhang, Shixiao Fu, Haojie Ren   +4 more
doaj   +1 more source

Modal Identification of Ultralow-Frequency Flexible Structures Based on Digital Image Correlation Method

Applied Sciences, 2021
Traditional modal testing has difficulty accurately identifying the ultralow-frequency modes of flexible structures. Ultralow-frequency excitation and vibration signal acquisition are two main obstacles.
Hui Qian, Yimeng Wu, Rui Zhu, Dahai Zhang, Dong Jiang   +4 more
doaj   +1 more source

A Coordinated Optimal Strategy for Voltage and Reactive Power Control with Adaptive Amplitude Limiter Based on Flexible Excitation System

Energies, 2021
The flexible excitation system (FES) is a kind of novel excitation system with two channels for damping control. Besides the basic functions of traditional excitation systems, flexible excitation systems can provide reactive power support for the ...
Yuwei Peng, Jiancheng Zhang, Chengxiong Mao, Hongtao Xiong, Tiantian Zhang, Dan Wang   +5 more
doaj   +1 more source

Online Frequency Estimation on a Building-like Structure Using a Nonlinear Flexible Dynamic Vibration Absorber

Mathematics, 2022
The online frequency estimation of forced harmonic vibrations on a building-like structure, using a nonlinear flexible vibration absorber in a cantilever beam configuration, is addressed in this article.
Francisco Beltran-Carbajal, Hugo Francisco Abundis-Fong, Luis Gerardo Trujillo-Franco, Hugo Yañez-Badillo, Antonio Favela-Contreras, Eduardo Campos-Mercado   +5 more
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Vibration and Stress Response of High-Speed Train Gearboxes under Different Excitations

Applied Sciences, 2022
The vibration data of the gearbox on a high-speed train was measured, and the vibration characteristics were analyzed in this paper. The dynamic stress of the gearbox under the internal and external excitation was examined by a railway vehicle dynamic ...
Wangang Zhu, Wei Sun, Hao Wu
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Analytical study on dynamic response of cantilever flexible retaining wall [PDF]

Archives of Civil Engineering, 2023
Based on wave mechanics theory, the dynamic response characteristics of cantilever flexible wall in two-dimensional site are analyzed. The partial derivative of the vibration equation of soil layer is obtained, and the general solution of the volume ...
Xiuzhu Yang, Xinyuan Liu, Shuang Zhao, Jun Yu   +3 more
doaj   +1 more source

Vibration Behaviour Analysis and Vibration Suppression Studies of the Space Robot

International Journal of Aerospace Engineering, 2022
Aiming at the problem that the vibration of space robot will reduce the dynamic accuracy of robot, a method of vibration suppression of space robot through trajectory planning is proposed.
Tian Yong, Yue Xiang, Feng Yan, Jiang Binzhang   +3 more
doaj   +1 more source