Results 21 to 30 of about 6,815,005 (225)

Scaling Challenges for Conical Plain Bearings as Wind Turbine Main Bearings

Wind, 2023
Wind energy is an important renewable energy source. Rotor main bearings are critical components of wind turbines since a faulty main bearing leads to downtime and high repair costs. Operational expenditures amount to 32% of wind energy costs. The use of
Jan Euler, Georg Jacobs, Amin Loriemi, Timm Jakobs, Amadeus Rolink, Julian Röder   +5 more
doaj   +1 more source

Reducing cost uncertainty in the drivetrain design decision with a focus on the operational phase [PDF]

Wind Energy Science, 2021
In order to identify holistically better drivetrain concepts for onshore wind turbine application, their operational behavior needs to be considered in an early design phase.
F. Harzendorf, R. Schelenz, G. Jacobs
doaj   +1 more source

Modal Aggregation Technique to Check the Accuracy of the Model Reduction of Array Cable Systems in Offshore Wind Farms

Energies, 2022
The need for a verification method for aggregation techniques for passive electrical systems is necessary as power systems increase in complexity. Model reduction is crucial to increase the number of simulations necessary to ensure a stable and reliable ...
Mohammad Kazem Bakhshizadeh, Benjamin Vilmann, Łukasz Kocewiak   +2 more
doaj   +1 more source

Simulation of distributed photovoltaic power generation system [PDF]

E3S Web of Conferences, 2023
Combined with the operation characteristics of photovoltaic power generation system, the mathematical model and simulation model are established, and the control strategy of bipolar inverter with wide output characteristics and the maximum power point ...
Cai Gaoyuan, Li Bingbing, Liu Liqun, Zhao Zhen, Han Lulu, Lai Youfu   +5 more
doaj   +1 more source

From Simulations to Accelerated Testing: Design of Experiments for Accelerated Load Testing of a Wind Turbine Drivetrain Based on Aeroelastic Multibody Simulation Data

Applied Sciences, 2022
The trend of increasing the power output and nominal load capacities of wind turbines (WT) over time has been driving the construction of testing facilities with increasing load capacities for testing WT drivetrain components prior to field deployment ...
Baher Azzam, Ralf Schelenz, Martin Cardaun, Georg Jacobs   +3 more
doaj   +1 more source

Low-Voltage Ride Through Strategy for MMC With Y₀/Y₀ Arrangement Transformer Under Single-Line-to-Ground Fault

IEEE Access, 2021
In the offshore wind farm high-voltage direct-current (HVDC) system, the power delivery capability of the onshore modular multilevel converter (MMC) decreases severely under grid fault, which makes the DC-bus voltage increase rapidly and threatens the ...
Xiaohe Wang, Xu Cai, Qing Chen, Bin Lin, Rui Xie   +4 more
doaj   +1 more source

A Critical Review of Wind Power Forecasting Methods—Past, Present and Future

Energies, 2020
The largest obstacle that suppresses the increase of wind power penetration within the power grid is uncertainties and fluctuations in wind speeds. Therefore, accurate wind power forecasting is a challenging task, which can significantly impact the ...
S. Hanifi, Xiaolei Liu, Zi Lin, S. Lotfian   +3 more
semanticscholar   +1 more source

Investigation of Dynamic Loads in Wind Turbine Drive Trains Due to Grid and Power Converter Faults

Energies, 2021
Electrical faults can lead to transient and dynamic excitations of the electromagnetic generator torque in wind turbines. The fast changes in the generator torque lead to load oscillations and rapid changes in the speed of rotation.
Julian Röder, Georg Jacobs, Tobias Duda, Dennis Bosse, Fabian Herzog   +4 more
doaj   +1 more source

A brief discussion on the role of data standardization in regional centralized control construction on the refined management of wind power production [PDF]

E3S Web of Conferences
Based on the main functions of the wind farm regional centralized control system, this article takes data standardization as the starting point and provides the detailed principles and main methods of data standardization in regional centralized control ...
Zhang Ying, Jin Weiwei, Li Zhiyong, Pan Wenbiao   +3 more
doaj   +1 more source

Primary Frequency Regulation Requirement of South Africa Grid Code and its DIgSILENT Simulation [PDF]

E3S Web of Conferences, 2020
Wind power is a kind of renewable energy with unexpected and unfriendly characteristics, so different countries have their own grid code to restrain wind power generation to an acceptable performance.
Chu Jingchun, Yuan Ling, Pan Haining, Hou Jianming   +3 more
doaj   +1 more source