Linear models-based LPV modelling and control for wind turbines

Wind Energy ◽  
2014 ◽  
Vol 18 (7) ◽  
pp. 1151-1168 ◽  
Author(s):  
A. Díaz de Corcuera ◽  
A. Pujana-Arrese ◽  
J. M. Ezquerra ◽  
A. Milo ◽  
J. Landaluze
Keyword(s):  
Wind Turbines ◽  
Linear Models ◽  
And Control

scholarly journals Modeling and control of Type-2 wind turbines for sub-synchronous resonance damping

2015 ◽  
Vol 97 ◽  
pp. 315-322 ◽  
Author(s):  
Fernando Mancilla-David ◽  
José Luis Domínguez-García ◽  
Mikel De Prada ◽  
Oriol Gomis-Bellmunt ◽  
Mohit Singh ◽  
...  
Keyword(s):  
Wind Turbines ◽  
Modeling And Control ◽  
Resonance Damping ◽  
And Control

Open-Loop Control Co-Design of Floating Offshore Wind Turbines Using Linear Parameter-Varying Models

2021 ◽  
Author(s):  
Athul K. Sundarrajan ◽  
Yong Hoon Lee ◽  
James T. Allison ◽  
Daniel R. Herber
Keyword(s):  
Wind Turbines ◽  
Open Loop ◽  
Offshore Wind ◽  
Linear Parameter ◽  
Design Decisions ◽  
Linear Parameter Varying ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines ◽  
Parameter Varying ◽  
And Control

Abstract This paper discusses a framework to design elements of the plant and control systems for floating offshore wind turbines (FOWTs) in an integrated manner using linear parameter-varying models. Multiple linearized models derived from high-fidelity software are used to model the system in different operating regions characterized by the incoming wind speed. The combined model is then used to generate open-loop optimal control trajectories as part of a nested control co-design strategy that explores the system’s stability and power production in the context of crucial plant and control design decisions. A cost model is developed for the FOWT system, and the effect of plant decisions and subsequent power and stability response of the FOWT is quantified in terms of the levelized cost of energy (LCOE) for that system. The results show that the stability constraints and the plant design decisions affect the turbine’s power and, subsequently, LCOE of the system. The results indicate that a lighter plant in terms of mass can produce the same power for a lower LCOE while still satisfying the constraints.

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 Design of advanced airfoil for stall-regulated wind turbines

2017 ◽  
Vol 2 (2) ◽  
pp. 403-413
Author(s):  
Francesco Grasso ◽  
Domenico Coiro ◽  
Nadia Bizzarrini ◽  
Giuseppe Calise
Keyword(s):  
Wind Turbines ◽  
Design Strategy ◽  
High Wind ◽  
Pitch Control ◽  
Turbine Performance ◽  
Gradient Based ◽  
Machine Control ◽  
And Control ◽  
The Impact ◽  
Numerical Optimisation

Abstract. Nowadays, all the modern megawatt-class wind turbines make use of pitch control to optimise the rotor performance and control the turbine. However, for kilowatt-range machines, stall-regulated solutions are still attractive and largely used for their simplicity and robustness. In the design phase, the aerodynamics plays a crucial role, especially concerning the selection/design of the necessary airfoils. This is because the airfoil performance is supposed to guarantee high wind turbine performance but also the necessary machine control capabilities. In the present work, the design of a new airfoil dedicated to stall machines is discussed. The design strategy makes use of a numerical optimisation scheme, where a gradient-based algorithm is coupled with the RFOIL code and an original Bezier-curves-based parameterisation to describe the airfoil shape. The performances of the new airfoil are compared in free- and fixed-transition conditions. In addition, the performance of the rotor is analysed, comparing the impact of the new geometry with alternative candidates. The results show that the new airfoil offers better performance and control than existing candidates do.

Aero-servo-elastic modeling and control of wind turbines using finite-element multibody procedures

2006 ◽  
Vol 16 (3) ◽  
pp. 291-308 ◽  
Author(s):  
Carlo L. Bottasso ◽  
Alessandro Croce ◽  
Barbara Savini ◽  
Walter Sirchi ◽  
Lorenzo Trainelli
Keyword(s):  
Finite Element ◽  
Wind Turbines ◽  
Modeling And Control ◽  
And Control

Modelling and Control of Wind Turbines

2013 ◽  
pp. 443-508
Author(s):  
Luis M. Fernández ◽  
Carlos Andrés García ◽  
Francisco Jurado
Keyword(s):  
Wind Turbines ◽  
And Control

Introduction: Paradise Has Walls

2020 ◽  
pp. 1-22
Author(s):  
S. Jonathon O’Donnell
Keyword(s):  
Critical Race Theory ◽  
Linear Models ◽  
Spiritual Warfare ◽  
Critical Race ◽  
Race Theory ◽  
Asymmetric War ◽  
Territorial Boundaries ◽  
And Control ◽  
The Demonic

Taking point from a post-9/11 spiritual warfare narrative in which models of asymmetric war are used to reconceptualize the demonic, the Introduction argues that figures of the demonic are both consolidating and deconstructive of systems of power, particularly those tied to sovereignty, identity, and empire. Weaving together two definitions of demonology, by Bruce Lincoln and Marcella Althaus-Reid, respectively, it demonstrates that demonology operates as a rubric of knowledge aimed at the classification, comprehension, and control of nonhuman and dehumanized others—the demonized—who simultaneously unsettle those rubrics of knowledge by exposing their categories as constructed and not natural. Mobilizing queer and critical race theory, it then situates the demon’s deconstructive quality in its figuration of passing and counterfeiture, which unsettle territorial boundaries, stable identities, and linear models of temporality.

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