Individual Pitch Control of Doubly-fed Wind Turbine Generator Based on Blade Element Theory
The premise of collective pitch control is that wind speed is the same in the rotor plane, but wind shear and tower shadow makes wind speed in the rotor rotating plane changing differently. It affects the corrective pitch control greatly and increases the fatigue load. This paper model 1.5MW doubly-fed WTG (wind turbine generator) for individual pitch control, and analyze the main reason of periodic load fluctuation. Then individual pitch control based on blade element theory was researched combining the actual of the load is difficult to measure. Pitch angle was distributed by weight coefficient to realize individual pitch control. The weight coefficient was computed according to the wind speed with consideration of trailing vortex, wind shear and tower shadow. Simulations indicate that the proposed individual pitch control method not only meet the basic power control request but also reduce fluctuation of load, so it can solve the problem of fatigue load and prolong the lifetime in process of development to large-scale WTG.
WTG Blade Element Theory Individual Pitch Weight Coefficient
Feng Gao Peng Guo
School of Control and Computer Engineering, North China Electric Power University, Beijing 102206
国际会议
The 24th Chinese Control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)
太原
英文
252-257
2012-05-23（万方平台首次上网日期，不代表论文的发表时间）