Interannual Wind Speed Variations and Estimated Wind Turbine Generator Energy Output at Selected Sites in the Pacific Northwest

1985 ◽  
Vol 107 (3) ◽  
pp. 237-239
Author(s):  
R. W. Baker
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Pacific Northwest ◽  
Power Measurement ◽  
Energy Output ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Speed Variation ◽  
Percent Increase ◽  
The Mean

The hourly wind speed data collected over a six-year period at four wind power measurement locations are used to estimate the annual energy output of a large wind turbine generator. The interannual energy and wind speed variations are discussed. The estimated interannual energy output at each location is related to the mean annual wind speed variation. The data indicate that at three of the four locations the estimated interannual energy variation varied as the square of the mean annual wind speed variation. That is, a 10 percent increase in the mean annual wind speed resulted in a 20 percent increase in the annual energy output. At the fourth location there was an approximate linear relationship.

scholarly journals A Reliability Based Model for Wind Turbine Selection

2013 ◽  
Vol 2 (2) ◽  
pp. 69-74 ◽  
Author(s):  
A.K. Rajeevan ◽  
P.V. Shouri ◽  
Usha Nair
Keyword(s):  
Power Generation ◽  
Wind Speed ◽  
Wind Turbine ◽  
Wind Power ◽  
Point Of View ◽  
Cube Root ◽  
Mathematical Relationship ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
A Site

A wind turbine generator output at a specific site depends on many factors, particularly cut- in, rated and cut-out wind speed parameters. Hence power output varies from turbine to turbine. The objective of this paper is to develop a mathematical relationship between reliability and wind power generation. The analytical computation of monthly wind power is obtained from weibull statistical model using cubic mean cube root of wind speed. Reliability calculation is based on failure probability analysis. There are many different types of wind turbinescommercially available in the market. From reliability point of view, to get optimum reliability in power generation, it is desirable to select a wind turbine generator which is best suited for a site. The mathematical relationship developed in this paper can be used for site-matching turbine selection in reliability point of view.

scholarly journals An Analysis of a Wind Turbine-Generator System in the Presence of Stochasticity and Fokker-Planck Equations

2020 ◽  
Vol 9 (1) ◽  
pp. 18-43
Author(s):  
Ravish Himmatlal Hirpara ◽  
Shambhu Nath Sharma
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Noise Analysis ◽  
Markov Modeling ◽  
Algebraic Equations ◽  
Turbine Generator ◽  
Generator System ◽  
Wind Turbine Generator ◽  
Wind Turbine Generator System ◽  
Fokker Planck

In power systems dynamics and control literature, theoretical and practical aspects of the wind turbine-generator system have received considerable attentions. The evolution equation of the induction machine encompasses a system of three first-order differential equations coupled with two algebraic equations. After accounting for stochasticity in the wind speed, the wind turbine-generator system becomes a stochastic system. That is described by the standard and formal Itô stochastic differential equation. Note that the Itô process is a strong Markov process. The Itô stochasticity of the wind speed is attributed to the Markov modeling of atmospheric turbulence. The article utilizes the Fokker-Planck method, a mathematical stochastic method, to analyse the noise-influenced wind turbine-generator system by doing the following: (i) the authors develop the Fokker-Planck model for the stochastic power system problem considered here; (ii) the Fokker-Planck operator coupled with the Kolmogorov backward operator are exploited to accomplish the noise analysis from the estimation-theoretic viewpoint.

scholarly journals Automatic control of the synchronous generator converter with permanent magnets of a wind turbine

2020 ◽  
Vol XXIII (2) ◽  
pp. 320-325
Author(s):  
Nitu Anamaria
Keyword(s):  
Wind Speed ◽  
Automatic Control ◽  
Wind Turbine ◽  
Permanent Magnets ◽  
Frequency Converter ◽  
Synchronous Generator ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Current Value ◽  
Intermediate Circuit

he work presents a method of automatic control of the frequency converter of the wind turbine generator so that it operates in the maximum power zone charged at a continuous and rapid wind speed variation to which is added as a disruptive element and the mechanical inertia of the turbine. The method is based on the control and knowledge of the current value in the intermediate circuit of the converter.

A New Simulation and Control Model for a Variable Speed Variable Pitch Direct Drive Large Offshore Wind Turbine Generator With Integrated Energy Storage

2014 ◽  
Author(s):  
B. Kazemtabrizi ◽  
S. Hogg
Keyword(s):  
Energy Storage ◽  
Wind Speed ◽  
Wind Turbine ◽  
Offshore Wind Turbine ◽  
Maximum Output ◽  
Variable Speed ◽  
Turbine Generator ◽  
Super Capacitor ◽  
Variable Pitch ◽  
Wind Turbine Generator

A comprehensive control and simulation model has been presented in this paper for a large multi-megawatt Variable Speed Variable Pitch Wind Turbine Generator (WTG) with Energy Storage System (ESS) integration. The generator is of a Permanent Magnet Synchronous Generator (PMSG) type which is then decoupled from the grid using a Fully-Rated back-to-back Converter (FRC) link. A Rotor Flux Oriented Control (RFOC) strategy has been adopted in order to extract the maximum output electromagnetic torque from the generator according to a Maximum Power Point Tracking (MPPT) profile for any wind speed lower than rated wind speed. The MPPT method presented in this paper relies on the turbine’s optimal output torque curve. The ESS makes provisions for enhanced performance especially during faults on the system. Dynamic performance of a super-capacitor makes it ideal as the integrated ESS in the WTG for satisfying such performance constraints. Results indicate that the WTG integrated with a super-capacitor ESS provides the required enhanced performance in terms of DC link voltage stability and limiting output power fluctuations during sudden variations in the wind speed as well as enhanced Fault Ride-Through (FRT) capability.

scholarly journals RANCANG BANGUN GENERATOR TURBIN ANGIN PUTARAN RENDAH SEBAGAI PEMBANGKIT ENERGI LISTRIK ALTERNATIF DI DAERAH PESISIR

WAHANA ◽  
2018 ◽  
Vol 70 (1) ◽  
pp. 25-34
Author(s):  
Sagita Rochman ◽  
Budi Prijo Sembodo
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Electric Power ◽  
Output Power ◽  
Axial Flux ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Rotor Shaft ◽  
Shaft Rotation

Axial Flux Permanent Magnet Generator (AFPMG) of wind turbine generator has been successfully designed and fabricated. The generator has been designed for wind speed in the range of 2-6 m/s and low rotation. The main purpose of study was to design and analyze wind turbine generator with the low speed of wind that can be generated electric power for household. The results showed that the prototype of wind turbine can be generated voltage around 22.5 - 157.1 V with the rotation of the rotor shaft at 150 - 1000 rpm. Meanwhile, the prototype can be generated output power of 98.5 Watt shaft rotation of 1000 rpm when its connected to load. Both current and voltage can be achieved around 151.4 V and 0.651 A, respectively.The prototype was then conneted with DC to DC converter and DC to AC converter to generate output power of 500 W.

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