Results 21 to 30 of about 297,175 (241)

CFD Analysis of The Stage-Ratio Factor on Savonius Wind Turbine Performance to Optimize Clean-Energy Conversion [PDF]

E3S Web of Conferences, 2023
In Indonesia, 50% of electrical energy is supplied by coal via electric steam power plants, with the remaining 14% supplied by new renewable energy sources.
Mahesa Prabowoputra Dandun, Krisnawati Maria, Sari Nurhidayat Akhlis Rahman, Khosyi Mohammad, Febrian Nur Halim Ryan, Zumara Haidar   +5 more
doaj   +1 more source

Flat Nonholonomic Matching [PDF]

, 2002
In this paper we extend the matching technique to a class of nonholonomic systems with symmetries. Assuming that the momentum equation defines an integrable distribution, we introduce a family of reduced systems.
Bloch, Anthony M., Marsden, Jerrold E., Zenkov, Dmitry V.   +2 more
core   +2 more sources

Game theory-based optimal deloading control of wind turbines under scalable structures of wind farm

IET Cyber-Physical Systems, 2018
This study addresses the problem of how to harvest as much kinetic energy as possible during deloading control of variable speed wind turbines (VSWTs) by distributedly adjusting rotor speeds under scalable wind farm topology.
Jianliang Zhang, Yujun Li, Zhao Xu, Donglian Qi, Donglian Qi, Chaoyong Li   +5 more
doaj   +1 more source

Fuzzy-based coordinated control and parameter correction strategy for speed controller of PMSG wind turbine in frequency response

Energy Reports, 2023
The purpose of frequency response of PMSG wind turbine is to provide additional energy support to the power system’s frequency regulation demand through its rotor kinetic energy. However, the inherent control loop represented by the PMSG speed controller,
Bo Peng, Xin Ma, Xiangxue Ma, Changbin Tian   +3 more
doaj   +1 more source

Performance Analysis of Multiple Wave Energy Converters due to Rotor Spacing

한국해양공학회지, 2021
A numerical hydrodynamic performance analysis of the pitch-type multibody wave energy converter (WEC) is carried out based on both linear potential flow theory and computational fluid dynamics (CFD) in the unidirectional wave condition.
Sunny Kumar Poguluri, Dongeun Kim, Haeng Sik Ko, Yoon Hyeok Bae   +3 more
doaj   +1 more source

Study on characteristics of frequency regulation of DFIG based on D-value of rotor speed compensation loop in power grid

Diance yu yibiao
According to the characteristics of double fed induction generator (DFIG), starting from the rotor kinetic energy, the relationship between the rotating kinetic energy and load shedding power of the wind turbine is coordinated by controlling the load ...
SUN Haoning, WANG Delin, LI Jinghua
doaj   +1 more source

On the Necessity of Dynamic Inflow [PDF]

Modeling, Identification and Control
This work explores the importance of dynamic inflow for wind turbines of varying rotor radius and also includes various coplanar multirotor setups. A parametrized model including the rotor and inflow dynamics is formulated.
Finn Matras, Morten D. Pedersen
doaj   +1 more source

Wake Statistics of Different-Scale Wind Turbines under Turbulent Boundary Layer Inflow

Energies, 2020
Subscale wind turbines can be installed in the field for the development of wind technologies, for which the blade aerodynamics can be designed in a way similar to that of a full-scale wind turbine. However, it is not clear whether the wake of a subscale
Xiaolei Yang, Daniel Foti, Christopher Kelley, David Maniaci, Fotis Sotiropoulos   +4 more
doaj   +1 more source

Potential of Static Pressure Recovery of Rotor-Only Low-Pressure Axial Fans

International Journal of Turbomachinery, Propulsion and Power, 2023
Typically installed in a rotor-only configuration, low-pressure axial fans discharge directly into a free atmosphere and the discharge shows a strong swirl component.
Hauke Witte, Christoph Bode, Jens Friedrichs   +2 more
doaj   +1 more source

Quantitative Control Approach for Wind Turbine Generators to Provide Fast Frequency Response with Guarantee of Rotor Security

, 2017
Wind generation is expected to reach substantially higher levels of penetration in the near future. With the converter interface, the rotor inertia of doubly-fed induction generator (DFIG) based wind turbine generator is effectively decoupled from the ...
Tomsovic, Kevin, Wang, Siqi
core   +1 more source