Analysis of the Wind System Operation in the Optimal Energetic Area at Variable Wind Speed over Time

Ciprian Sorandaru, Sorin Musuroi, Flaviu Mihai Frigura-Iliasa, Doru Vatau and Marian Dordescu
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Ciprian Sorandaru: Electrical Engineering Department, Faculty of Electrical and Power Engineering, Politehnica University Timisoara, 300223 Timișoara, Romania
Sorin Musuroi: Electrical Engineering Department, Faculty of Electrical and Power Engineering, Politehnica University Timisoara, 300223 Timișoara, Romania
Flaviu Mihai Frigura-Iliasa: Power Systems Department, Faculty of Electrical and Power Engineering, Politehnica University Timisoara, 300223 Timișoara, Romania
Doru Vatau: Power Systems Department, Faculty of Electrical and Power Engineering, Politehnica University Timisoara, 300223 Timișoara, Romania
Marian Dordescu: Department of Engineering Sciences in the Electrical Field, Constanta Maritime University, 900663 Constanta, Romania

Sustainability, 2019, vol. 11, issue 5, 1-16

Abstract: Due to high mechanical inertia and rapid variations in wind speed over time, at variable wind speeds, the problem of operation in the optimal energetic area becomes complex and in due time it is not always solvable. No work has been found that analyzes the energy-optimal operation of a wind system operating at variable wind speeds over time and that considers the variation of the wind speed over time. In this paper, we take into account the evolution of wind speed over time and its measurement with a low-power turbine, which operates with no load at the mechanical angular velocity ω MAX . The optimal velocity is calculated. The energy that is captured by the wind turbine significantly depends on the mechanical angular velocity. In order to perform a function in the maximum power point (MPP) power point area, the load on the electric generator is changed, and the optimum mechanical velocity is estimated, ω OPTIM , knowing that the ratio ω OPTIM / ω MAX does not depend on the time variation of the wind speed.

Keywords: wind system; variable wind speeds; maximum power point; power; mechanical inertia; motion equation; mathematical model of wind turbine; maximum energy; maximum power point operation; optimum mechanical angular velocity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
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