Output Power Control of Wind Turbine Generator by Pitch Angle Control using Minimum Variance Control

Abstract

In recent years, there have been problems such as exhaustion of fossil fuels, e.g., coal and oil, and environmental pollution resulting from consumption. Effective utilization of renewable energies such as wind energy is expected instead of the fossil fuel. Wind energy is not constant and windmill output is proportional to the cube of wind speed, which cause the generated power of wind turbine generators (WTGs) to fluctuate. In order to reduce fluctuating components, there is a method to control pitch angle of blades of the windmill. In this paper, output power leveling of wind turbine generator by pitch angle control using an adaptive control is proposed. A self-tuning regulator is used in adaptive control. The control input is determined by the minimum variance control. It is possible to compensate control input to alleviate generating power fluctuation with using proposed controller. The simulation results with using actual detailed model for wind power system show effectiveness of the proposed controller.

Individual pitch control on wind turbines with permanent magnet synchronous generator for reduction of mechanical load and stability of output power

“…Rüzgâr, değişken bir enerji kaynağı olduğundan, rüzgâr türbininden elde edilen enerji de değişkenlik arz etmektedir [1]. Rüzgâr hızı nominal rüzgâr hızının altında olduğu bölgelerde eğer mümkünse rüzgâr türbininde maksimum güç transferi yöntemleri uygulanarak, rüzgâr hızının nominal rüzgâr hızının üzerinde olduğu bölgelerde ise hatve açısı kontrolü yapılarak çıkış gücü nominal çıkış gücünde veya nominal çıkış gücüne en yakın değerlerde tutulmaya çalışılır.…”

Controls of Hydraulic Wind Turbine

“…Wind energy is considered one of the most important green energies being developed and applied worldwide (2,3). The utilization of wind energy as an alternative for fossil fuels is considerably growing due to an increasing environmental concern and exhaustion of fossil fuels (4, 5and 6).…”

Modeling and Control of a Hybrid Hydraulic-Electric Propulsion System

“…The utilization of renewable energies as an alternative for fossil fuels is considerably growing due to an increasing environmental concern and exhaustion of fossil fuels [1][2][3]. Transportation electrification is one way to replace or reduce fossil fuels with renewable energy sources.…”