Hydraulic systems used for pitch control of wind turbines: a literature overview

Pelin, R I; Bârsănescu, P D; Tița, Irina

doi:10.1088/1757-899x/444/4/042013

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…The goals of pitch control are to save the turbine from overload resulted from the sudden wind gust, maximize the generated power under normal operation [44,58]. There are two types of pitch control system actuators which are electrotechnical pitch actuator and hydraulic pitch actuator [59,60]. The pitch control turns the blades around their axes to increase or decrease the relative wind flow and to avoid aerodynamic overloads on the rotor while keeping the rated power.…”

Section: Blade Pitch Control In Regionmentioning

confidence: 99%

Recent Control Technologies for Floating Offshore Wind Energy System: A Review

Truong

Dang

et al. 2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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This paper presents the recent control technologies being researched for floating offshore wind energy system (FOWES). FOWES has been getting many attentions recently as an alternative energy system utilizing vast sustainable wind resource away from land with little restriction by human societies, artificial and natural obstacles. However, not only due to the harsh environmental conditions such as strong wind, wave, and current, but also due to the platform motions such as surge, sway, heave, pitch, roll, and yaw, there could occur many problems including less energy capture than expected, frequent emergency stops, turbine structural instability, and fatigues resulting in early failures, which stay the levelized cost of energy (LCOE) still high compared to conventional fixed offshore wind energy system. These risks could be lowered by operating the turbine close to the optimum point and harvesting wind energy efficiently even under strong wind conditions with the properly applied control technologies, while reducing the loads on structural components. Many researches have been actively going on not only by numerical approaches, but also by experimental tests. This study is wrapping the most recent researches on control technologies for promising floating offshore wind energy system according to different substructure designs such as a spar type, semi-submergible type, tension-leg platform (TLP) type, and barge type, and discusses about its challenges as well.

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Section: Blade Pitch Control In Regionmentioning

confidence: 99%

Recent Control Technologies for Floating Offshore Wind Energy System: A Review

Truong

Dang

et al. 2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…1,2 Researchers have attempted various system component design and controller design approach for horizontal axis wind turbine (HAWT) to improve system performance, operational safety and power generation cost reduction. [3][4][5][6][7] Blade element momentum (BEM) theory can be used for identification of desired torque for region II and pitch angle for region III to obtain maximum power and rated power, respectively. 6,7 The BEM theory entirely depends upon lift, drag coefficients and angle of attack.…”

Section: Introductionmentioning

confidence: 99%

“…6,7 The BEM theory entirely depends upon lift, drag coefficients and angle of attack. 4,5 The BEM theory requires less computational time for the estimation of thrust force and torque; therefore, it can be used for online pitch angle prediction for control application. [7][8][9] To monitor the maximum power extraction and save the HAWT components from wind gusts, proper pitch actuation system along with suitable controller design is important.…”

Section: Introductionmentioning

confidence: 99%

Electrohydraulic proportional valve-controlled vane type semi-rotary actuated wind turbine control by feedforward fractional-order feedback controller

Venkaiah

Sarkar

2021

Proceedings of the Institution of Mechanical Engineers, Part I:

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In this study, proportional valve-controlled semi-rotary electrohydraulic actuator proposed for horizontal axis wind turbine pitch movement. Semi-rotary actuator can be connected directly to the wind turbine blade, which reduces mechanical complexity compare to linear electrohydraulic actuator system. Adaptive torque control scheme has been adopted for the horizontal axis wind turbine in region II; however, adaptive pitch control has been adopted for region III. Optimum pitch demand and torque demand have been estimated through blade element momentum theory based on predicted wind speed. The control objective is to track maximum power through torque control in region II and to maintain rated power with structural safety by limiting thrust force in the region III. The proposed wind turbine model has been validated with 1.5-MW wind turbine experimental data. Feedforward fractional-order proportional–integral–derivative controller with adaptive teaching–learning based optimization algorithm has been developed for wind turbine control application. In region II, feedforward control signal generates due to torque demand and feedback control signal generates due to combined torque and pitch error. However, in region III, feedforward and feedback control estimated with pitch demand and combined pitch and torque error, respectively. The proposed controller performance has been tested with sinusoidal, step and actual wind data. The controller performance also compared with respect to other conventional controllers. Performance of the adaptive teaching–learning-based optimization has been compared with genetic algorithm and teaching–learning-based optimization process. Sensitivity analysis has been performed with proposed controller to check the effectiveness of the optimization. Furthermore, the proposed controller response has been compared with existing data of 1.5-MW wind turbine. Lyapunov-based stability analysis has been performed to ensure stability and convergence of the proposed system. Proposed controller performance has been found better compare to the existing result.

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Model-based design optimisation of digital hydraulic pitch actuator for a large-scale wind turbine

Narayanan

Ramakrishnan

2022

International Journal of Ambient Energy

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Hydraulic systems used for pitch control of wind turbines: a literature overview

Cited by 6 publications

References 23 publications

Recent Control Technologies for Floating Offshore Wind Energy System: A Review

Recent Control Technologies for Floating Offshore Wind Energy System: A Review

Electrohydraulic proportional valve-controlled vane type semi-rotary actuated wind turbine control by feedforward fractional-order feedback controller

Model-based design optimisation of digital hydraulic pitch actuator for a large-scale wind turbine

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