Results 21 to 30 of about 508,346 (348)

Multilink DC transmission for offshore Wind Power integration

2012 IEEE International Symposium on Industrial Electronics, 2012
The High Voltage Direct Current (HVDC) system gains much more flexibility on a basis of multi terminal operation. Having extra converters brings also new ideas in sharing the active power and one of the solutions is the use of virtual impedance correlated with a droop controller.
Craciun, Bogdan-Ionut, da Silva, Rodrigo, Teodorescu, Remus, Rodríguez Cortés, Pedro   +3 more
openaire   +3 more sources

Quantifying magnetic degradation in laser-cut electrical steel: A domain-level study with angle-dependent magnetization [PDF]

AIP Advances
Laser cutting is an accurate and popular manufacturing process as it is largely employed in most industries in cutting and shaping materials, including electrical steel parts.
Rawal Shahbaz, Changgeng Zhang, Hina Fatima, Hao Zhang, Yan Zhang   +4 more
doaj   +1 more source

Influence of AC fault at sending end on receiving-end networks of large-scale AC/DC hybrid power grid

Zhejiang dianli, 2022
In order to meet the need for large-scale transmission of new energy consumption across regions， China has built and put into operation several conventional DC， UHVDC and flexible DC transmission projects and has realized asynchronous interconnection ...
SUN Tianjia, LIU Haiyang
doaj   +1 more source

Influence Research on Induced Voltage of Multi UHVDC Transmission Lines to the Power Line Under Construction in the Same Corridor

南方能源建设, 2019
[Introduction] Multi power transmission lines arranged in the same corridor could avoid the land division and reduce the adverse effect on the local planning and development, but the personal safety of operators in the process of towers and conductors ...
LI Biao, ZHANG Jie, YU Lei, WANG Jingyi, WANG Yandong   +4 more
doaj   +1 more source

Review on DC transmission systems for integrating large‐scale offshore wind farms

Energy Conversion and Economics, 2021
The exploitation of offshore wind power has increased rapidly in recent years. To gain more wind power energy, offshore wind farms move farther from onshore.
Zhengxuan Li, Qiang Song, Feng An, Biao Zhao, Zhanqing Yu, Rong Zeng   +5 more
doaj   +1 more source

A Unidirectional DC-DC Autotransformer for DC Grid Application

Energies, 2018
Conventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss.
Meng Zhou, Wang Xiang, Wenping Zuo, Weixing Lin, Jinyu Wen   +4 more
doaj   +1 more source

Reactive Voltage Emergency Control Strategy of Wind-Thermal-Bundled DC Transmission System Considering Wind Farm Regulation Margin

Zhongguo dianli, 2023
In order to suppress the transient overvoltage of direct current (DC) sending-end power grid and make full use of wind power in the power regulation of wind-thermal-bundled DC transmission system, a reactive voltage emergency control strategy considering
Wenjun ZHOU, Yi CAO, Jie LI, Tao JIN, Wenjian CHEN, Xia ZHOU   +5 more
doaj   +1 more source

Long-Range Response to Transmission Line Disturbances in DC Electricity Grids

, 2014
We consider a DC electricity grid composed of transmission lines connecting power generators and consumers at its nodes. The DC grid is described by nonlinear equations derived from Kirchhoff's law.
Kettemann, Stefan, Labavić, Darka, Meyer-Ortmanns, Hildegard, Suciu, Raluca   +3 more
core   +1 more source

Novel Sub-Harmonic Injection-Locked Balanced Oscillator [PDF]

, 2001
A novel sub-harmonic injection-locked balanced oscillator is proposed. The circuit provides two outputs with a 180° ° phase difference by employing a transmission line section for impedance transformation to meet the oscillation conditions.
Chongcheawchamnan, M., Robertson, I. D., Siripon, N.   +2 more
core   +1 more source

Stable operating limits and improvement methods for hydropower and photovoltaic integration through MMC-HVDC systems

Frontiers in Electronics
This paper addresses the critical need to determine the stable operating limit of modular multilevel converter-based high voltage direct current (MMC-HVDC) systems, particularly concerning the integration of extensive renewable energy sources. To achieve
Maolan Peng, Lei Feng, Shuwen Zhang, Wei Zhao   +3 more
doaj   +1 more source