兆瓦级风力发电机组有功功率调节综述_英文_.pdfVIP

31 20 Vol. 31 No. 20 2007 10 Power System Technology Oct. 2007 100020-0024-11 TM315 A 470·4047 William E. LeitheadSergio Dominguez G1 1QE Active Regulation of Multi-MW Wind Turbines: An Overview William E. LeitheadSergio Dominguez Department of Electronic and Electrical EngineeringUniversity of StrathclydeGlasgow G1 1QEUK ABSTRACT: With the recent trend towards large multi-MW wind turbines with a rating up to 5 MW are available. wind turbines, the role of the control system has become After exploring many different concepts (one-bladed increasingly important and its design increasingly demanding. machines, two-bladed machines, vertical axis Furthermore, the realisation that not only the performance of machines, constant speed, etc.), the industry standard the machine but also the structural loads depend on the has now settled on what is known as the Danish controller, has given research into the control of wind turbines Concept, a three bladed up-wind horizontal-axis a new impetus. The extension of the role of the controller to machine, see Figure 1. alleviate structural loads has motivated the exploration of novel control strategies, which seek to maximise load alleviation by exploiting the blade pitch system. An overview to raise Nacelle Hub awareness of the possibilities and potential of control for multi- Blade MW wind turbines is presented. The place within the wind energy technology of the control system and its role as an integrating techn