Field Operation and Track Tests of 1-kW Small Wind Turbine Under High Wind Conditions

A 1-kW small horizontal-axis wind turbine “Airdolphin,” capable of high wind operation up to 50 m/s without pitch control system, is now under global round robin tests. The present paper reports a series of technical approach including design/analysis, track tests, and field tests conducted in support to the design process. One windy site “Erimo” and one offshore site “Fukushima” were chosen. For example, at “Erimo,” a record of one-day generation was 8.831 kWh on November 13, 2006 (day-averaged wind speed; 11.8 m/s) with 36.8% of capacity factor. An operation data under an attack of typhoon with 50 m/s maximum wind speed demonstrated the technical concepts of high wind operation and safety. A new term “capatureability” as an indicator of WT performance was proposed.

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Development of Hardware-in-the-Loop-Simulation Testbed for Pitch Control System Performance Test

Energies ◽

10.3390/en12102031 ◽

2019 ◽

Vol 12 (10) ◽

pp. 2031

Author(s):

Jongmin Cheon ◽

Jinwook Kim ◽

Joohoon Lee ◽

Kichang Lee ◽

Youngkiu Choi

Keyword(s):

Control System ◽

Wind Speed ◽

Wind Turbine ◽

Wind Shear ◽

Performance Test ◽

Control Function ◽

Hardware In The Loop ◽

Rotor Speed ◽

Test Bed ◽

Pitch Control

This paper deals with the development of a wind turbine pitch control system and the construction of a Hardware-in-the-Loop-Simulation (HILS) testbed for the performance test of the pitch control system. When the wind speed exceeds the rated wind speed, the wind turbine pitch controller adjusts the blade pitch angles collectively to ensure that the rotor speed maintains the rated rotor speed. The pitch controller with the individual pitch control function can add individual pitch angles into the collective pitch angles to reduce the mechanical load applied to the blade periodically due to wind shear. Large wind turbines often experience mechanical loads caused by wind shear phenomena. To verify the performance of the pitch control system before applying it to an actual wind turbine, the pitch control system is tested on the HILS testbed, which acts like an actual wind turbine system. The testbed for evaluating the developed pitch control system consists of the pitch control system, a real-time unit for simulating the wind and the operations of the wind turbine, an operational computer with a human–machine interface, a load system for simulating the actual wind load applied to each blade, and a real pitch bearing. Through the several tests based on HILS test bed, how well the pitch controller performed the given roles for each area in the entire wind speed area from cut-in to cut-out wind speed can be shown.

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The Modeling and Simulation of Wind Turbines and the Design of Pitch Control System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.2323 ◽

2011 ◽

Vol 347-353 ◽

pp. 2323-2329

Author(s):

Zhi Chao Lan ◽

Lin Tao Hu ◽

Yin Xue ◽

De Liang Zen

Keyword(s):

Control System ◽

Wind Speed ◽

Wind Turbine ◽

Wind Turbines ◽

Pitch Angle ◽

Active Power ◽

Internal Model Control ◽

Pitch Control ◽

Constant Pitch ◽

Model Control

An increasing number of large wind turbines with a variable-speed variable pitch control mechanism are developed to improve the response speed of wind turbines and get maximum active power .Designing a reasonable pitch control system requires both a good control scheme and a more accurate wind turbine model. Base on the analysis of wind turbines’ principle, a local linearization model of wind turbine is built by using linearization method of small deviation in this paper. The model’s inputs are the data of wind speed and pitch angle, and the output is the active power. The accuracy of the model is verified by studying the active power output of wind turbine under different circumstances in which the pitch angle changes with a constant wind speed and the wind speed changes with a constant pitch angle. At the same time, this paper provides pitch control program based on internal model control after analyzing the disadvantages of PID pitch controller. When the wind speed is beyond the rating, the active power can be limited reasonably around the power rating of wind turbines by adjusting the pitch angle.

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The Simulation of Pitch Control System for Variable Speed Wind Turbine Based on Neural Network

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.2501 ◽

2011 ◽

Vol 383-390 ◽

pp. 2501-2506

Author(s):

Li Na Liu ◽

Hui Juan Qi ◽

Bin Li

Keyword(s):

Neural Network ◽

Control System ◽

Wind Speed ◽

Wind Turbine ◽

Output Power ◽

Pitch Angle ◽

Optimal Control Strategy ◽

Pitch Control ◽

Detailed Simulation ◽

And Performance

The parameters of large wind turbine need to be adjusted timely to avoid excessive wind energy that will cause damage on the wind turbine itself. Based on the simplified mathematical model of wind turbine, we got the relationship curve between its parameters. When the speed of wind was higher than the rated wind speed, we figure out the value of pitch angle during the changes of effective wind speed to keep rated output power. Neural Network used to train the data and pitch control system was built, it used to adjust pitch angle once the wind changes, and maintain the output power at rated value. The complex mathematical relation can be replaced by the trained network model. Detailed simulation results have confirmed the feasibility and performance of the optimal control strategy, which protect the wind turbine from damage and prolong its service life.

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Fractional order control scheme in pitch control loop of synchronous generator wind turbine type 4 at high wind speed operation in a microgrid

Journal of Renewable and Sustainable Energy ◽

10.1063/1.5066447 ◽

2019 ◽

Vol 11 (1) ◽

pp. 013305 ◽

Cited By ~ 3

Author(s):

Hossein Mahvash ◽

Seyed Abbas Taher ◽

Mohammad Shahidehpour

Keyword(s):

Wind Speed ◽

Wind Turbine ◽

Fractional Order ◽

Synchronous Generator ◽

Control Loop ◽

High Wind ◽

High Wind Speed ◽

Fractional Order Control ◽

Pitch Control ◽

Control Scheme

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Study of Supervisory Control Implementation in A Small Scale Variable Speed Wind Turbine

E3S Web of Conferences ◽

10.1051/e3sconf/20184301023 ◽

2018 ◽

Vol 43 ◽

pp. 01023

Author(s):

Katherin Indriawati ◽

Ali Musyafa ◽

Bambang L. Widjiantoro ◽

Anna Milatul Ummah

Keyword(s):

Control System ◽

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Supervisory Control ◽

Regulatory Control ◽

Small Scale ◽

Pi Control ◽

Horizontal Axis Wind Turbine ◽

Power Extraction

In relation to improve wind energy production, efforts to increase the extraction of wind energy should be done when there is a decrease in wind power. The decline occurs when there is a change in wind speed. At low wind speed operating range, such as in Indonesia, the controller optimizes power extraction through wind turbine rotor regulation following optimal rotor speed. This study proposed the use of the PI control system as an intelligent control system to solve nonlinearity problem and the setpoint adjustment mechanism to get at the problem of the uncontrolled stochastic driving force input. The PI control is called as a regulatory control while setpoint adjustment is known as one mechanism in supervisory level. Thus, that control system is called as the supervisory control. This control had a task to maximize output power of a wind turbine. The technique was applied to a small scale horizontal axis wind turbine operating in wind speed range of 3-11 m/s. The applied optimization algorithm generated an optimum set-point simultaneously when there was a change of wind speed.

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