scholarly journals Harvesting wind gust energy with small and medium wind turbines using a bidirectional control strategy

2019 ◽  
Vol 2019 (17) ◽  
pp. 4261-4266 ◽  
Author(s):  
Milad Sajadi ◽  
Jeroen D. M. De Kooning ◽  
Lieven Vandevelde ◽  
Guillaume Crevecoeur
Keyword(s):  
Wind Turbines ◽  
Control Strategy ◽  
Wind Gust

scholarly journals Wind Gust Detection and Impact Prediction for Wind Turbines

2018 ◽  
Vol 10 (4) ◽  
pp. 514 ◽  
Author(s):  
Kai Zhou ◽  
Nihanth Cherukuru ◽  
Xiaoyu Sun ◽  
Ronald Calhoun
Keyword(s):  
Wind Turbines ◽  
Wind Gust ◽  
Impact Prediction

Research of Inertial Control Strategy of Wind turbines under Low Frequency Situation of Hydro-dominated System

2021 ◽  
Author(s):  
Chenguang Wang ◽  
Chongtao Li ◽  
Kehan Zeng ◽  
Yiping Chen ◽  
Liang Xiao ◽  
...  
Keyword(s):  
Wind Turbines ◽  
Control Strategy ◽  
Low Frequency ◽  
Inertial Control

Study on a global control strategy for rotation speed with different work states in variable-speed constant-frequency wind turbines

2011 ◽  
Vol 225 (7) ◽  
pp. 968-976 ◽  
Author(s):  
G Zheng ◽  
H Xu ◽  
X Wang ◽  
J Zou
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Control Strategy ◽  
Control Strategies ◽  
Stable Operation ◽  
Constant Frequency ◽  
Global Control ◽  
Control Rules ◽  
The Individual ◽  
And Control

This paper studies the operation of wind turbines in terms of three phases: start-up phase, power-generation phase, and shutdown phase. Relationships between the operational phase and control rules for the speed of rotation are derived for each of these phases. Taking into account the characteristics of the control strategies in the different operational phases, a global control strategy is designed to ensure the stable operation of the wind turbine in all phases. The results of simulations are presented that indicate that the proposed algorithm can control the individual phases when considered in isolation and also when they are considered in combination. Thus, a global control strategy for a wind turbine that is based on a single algorithm is presented which could have significant implications on the control and use of wind turbines.

scholarly journals Development Of A New Reactive Power Control Strategy In Doubly-fed Induction Generators For Wind Turbines

2008 ◽  
Vol 13 (4) ◽  
pp. 277-284 ◽  
Author(s):  
Rodrigo Gaiba de Oliveira ◽  
João Lucas da Silva ◽  
Selênio Rocha Silva ◽  
Balduino Rabelo Junior ◽  
Wilfried Hofmann
Keyword(s):  
Power Control ◽  
Wind Turbines ◽  
Control Strategy ◽  
Reactive Power ◽  
Reactive Power Control ◽  
Induction Generators ◽  
Doubly Fed Induction Generators ◽  
Doubly Fed

scholarly journals Prognostics-based adaptive control strategy for lifetime control of wind turbines

2021 ◽  
Author(s):  
Edwin Kipchirchir ◽  
Manh Hung Do ◽  
Jackson Githu Njiri ◽  
Dirk Söffker
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Control Strategy ◽  
Fatigue Loading ◽  
Operational Reliability ◽  
Operating Conditions ◽  
Rotor Blades ◽  
Time Step ◽  
Damage Level ◽  
Structural Loading

Abstract. Variability of wind profiles in both space and time is responsible for fatigue loading in wind turbine components. Advanced control methods for mitigating structural loading in these components have been proposed in previous works. These also incorporate other objectives like speed and power regulation for above-rated wind speed operation. In recent years, lifetime control and extension strategies have been proposed to guaranty power supply and operational reliability of wind turbines. These control strategies typically rely on a fatigue load evaluation criteria to determine the consumed lifetime of these components, subsequently varying the control set-point to guaranty a desired lifetime of the components. Most of these methods focus on controlling the lifetime of specific structural components of a wind turbine, typically the rotor blade or tower. Additionally, controllers are often designed to be valid about specific operating points, hence exhibit deteriorating performance in varying operating conditions. Therefore, they are not able to guaranty a desired lifetime in varying wind conditions. In this paper an adaptive lifetime control strategy is proposed for controlled ageing of rotor blades to guaranty a desired lifetime, while considering damage accumulation level in the tower. The method relies on an online structural health monitoring system to vary the lifetime controller gains based on a State of Health (SoH) measure by considering the desired lifetime at every time-step. For demonstration, a 1.5 MW National Renewable Energy Laboratory (NREL) reference wind turbine is used. The proposed adaptive lifetime controller regulates structural loading in the rotor blades to guaranty a predefined damage level at the desired lifetime without sacrificing on the speed regulation performance of the wind turbine. Additionally, significant reduction in the tower fatigue damage is observed.

scholarly journals Emerging trends in vibration control of wind turbines: a focus on a dual control strategy

2015 ◽  
Vol 373 (2035) ◽  
pp. 20140069 ◽  
Author(s):  
Andrea Staino ◽  
Biswajit Basu
Keyword(s):  
Vibration Control ◽  
Wind Turbines ◽  
Control Strategy ◽  
Offshore Wind ◽  
Structural Vibration ◽  
Offshore Wind Turbine ◽  
Dual Control ◽  
Pitch Control ◽  
Emerging Trends ◽  
Control Schemes

The paper discusses some of the recent developments in vibration control strategies for wind turbines, and in this context proposes a new dual control strategy based on the combination and modification of two recently proposed control schemes. Emerging trends in the vibration control of both onshore and offshore wind turbines are presented. Passive, active and semi-active structural vibration control algorithms have been reviewed. Of the existing controllers, two control schemes, active pitch control and active tendon control, have been discussed in detail. The proposed new control scheme is a merger of active tendon control with passive pitch control, and is designed using a Pareto-optimal problem formulation. This combination of controllers is the cornerstone of a dual strategy with the feature of decoupling vibration control from optimal power control as one of its main advantages, in addition to reducing the burden on the pitch demand. This dual control strategy will bring in major benefits to the design of modern wind turbines and is expected to play a significant role in the advancement of offshore wind turbine technologies.

Exploiting Bidirectional Power Flow Control to Capture Wind Gust Power in Small and Medium Wind Turbines

2021 ◽  
Author(s):  
B. M. Gavgani ◽  
T. Staessens ◽  
J. V. Damme ◽  
J. D. M. De Kooning ◽  
D. Bozalakov ◽  
...  
Keyword(s):  
Flow Control ◽  
Wind Turbines ◽  
Power Flow ◽  
Wind Gust ◽  
Power Flow Control ◽  
Bidirectional Power Flow
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