scholarly journals A novel optimum tip speed ratio control of low speed wind turbine generator based on type-2 fuzzy system

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Muldi Yuhendri ◽  
Mukhlidi Muskhir ◽  
Taali Taali
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Output Power ◽  
Fuzzy System ◽  
Speed Ratio ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Tip Speed Ratio ◽  
Speed Controller

Variable speed control of wind turbine generator systems have been developed to get maximum output power at every wind speed variation, also called Maximum Power Points Tracking (MPPT). Generally, MPPT control system consists of MPPT algorithm to track the controller reference and generator speed controller. In this paper, MPPT control system is proposed for low speed wind turbine generator systems (WTGs) with MPPT algorithms based on optimum tip speed ratio (TSR) and generator speed controller based on field oriented control using type-2 fuzzy system (T2FS). The WTGs are designed using horizontal axis wind turbines to drive permanent magnet synchronous generators (PMSG). The simulation show that the MPPT system based optimum TSR has been able to control the generator output power around the maximum point at all wind speeds.

scholarly journals Comparisons between the Wake of a Wind Turbine Generator Operated at Optimal Tip Speed Ratio and the Wake of a Stationary Disk

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Takanori Uchida ◽  
Yuji Ohya ◽  
Kenichiro Sugitani
Keyword(s):  
Numerical Simulations ◽  
Wind Turbine ◽  
Speed Ratio ◽  
Turbine Generator ◽  
Velocity Deficit ◽  
Wind Turbine Generator ◽  
Tip Speed Ratio ◽  
Stationary Disk ◽  
Eddy Simulation ◽  
Les Model

The wake of a wind turbine generator (WTG) operated at the optimal tip speed ratio is compared to the wake of a WTG with its rotor replaced by a stationary disk. Numerical simulations are conducted with a large eddy simulation (LES) model using a nonuniform staggered Cartesian grid. The results from the numerical simulations are compared to those from wind-tunnel experiments. The characteristics of the wake of the stationary disk are significantly different from those of the WTG. The velocity deficit at a downstream distance of (: rotor diameter) behind the WTG is approximately 30 to 40% of the inflow velocity. In contrast, flow separation is observed immediately behind the stationary disk (), and the velocity deficit in the far wake () of the stationary disk is smaller than that of the WTG.

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

2004 ◽  
Vol 124 (12) ◽  
pp. 1455-1462 ◽  
Author(s):  
Tomonobu Senjyu ◽  
Ryosei Sakamoto ◽  
Naomitsu Urasaki ◽  
Hiroki Higa ◽  
Katsumi Uezato ◽  
...  
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Output Power ◽  
Pitch Angle ◽  
Minimum Variance ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Minimum Variance Control

scholarly journals Maximizing the Output Power of Wind-Driven Grid-Connected Cage Induction Generator through Pole Control

2018 ◽  
Vol 29 (2) ◽  
pp. 39-49
Author(s):  
M. A. Abdel-Halim M. A. Abdel-Halim
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Output Power ◽  
Amplitude Modulation ◽  
Electrical Power ◽  
Mechanical Power ◽  
Induction Generator ◽  
Speed Ratio ◽  
Tip Speed Ratio ◽  
Slip Ring

In this research, a cage induction generator has been linked to the grid and driven with a wind-turbine to generate electrical power. The cage generator has been used in place of the costly slip-ring generator. The performance characteristics of the cage induction generator have been ameliorated through changing its number of poles to comply with the level of the wind speed to maximize the mechanical power extracted from the wind. Pole changing has been achieved employing pole-amplitude modulation technique resulting in three sets of pole numbers. The results proved the feasibility and effectiveness of the suggested method, as the proposed technique led to driving the generator, and consequently the wind-turbine at speeds close or equal to those satisfying the optimum tip-speed ratio which corresponds to the point of maximum mechanical power.

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