水平轴潮流能发电机组变桨距系统研究  

STUDY ON BLADE PITCHING SYSTEM FOR HORIZONTAL AXIS TIDAL CURRENT TURBINE

作　　者：马舜[1,2] 李伟[1] 刘宏伟[1] 林勇刚[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027 [2]杭州市特种设备检测院,杭州310003

出　　处：《太阳能学报》2011年第11期1605-1610,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金重点项目(50735004);国家高技术研究发展(863)计划(2007AA05Z443);浙江省重大科技攻关项目(2006C11012)

摘　　要：针对水平轴潮流能发电机组的变桨距系统进行研究。利用理论力学及叶素动量理论对桨叶在机组工作时的受力进行详细分析,提出变桨载荷的理论计算方法。根据潮流能机组轮毂体积小、变桨载荷及调桨范围大等特点,设计了一种新型的基于电液比例技术的齿轮齿条式变桨距执行机构。该机构结构紧凑、油路新颖、驱动力矩及调桨角度大。在建立系统数学模型的基础上,通过数字仿真对系统的控制特性进行研究。仿真结果表明采用PID控制算法的变桨距系统具有较好的动态特性,能够满足机组功率控制的需求。A novel blade pitching system for horizontal axis tidal current turbine was presented. The force that the blades were subject to when the turbine worked was analyzed in detail using theoretical mechanics and blade ele- ment momentum theory. A theoretical pitching load calculation method was proposed. According to tidal current turbine＇ s characteristics including small hub, large pitching load, and large range of pitch adjustment, a novel pin- ion-and-rack variable pitch actuating mechanism based on electrohydraulic proportional technique was designed. This mechanism has a compact structure, an original oil passage, large driving torque, and large range of pitch adjustment. The system＇ s control performance was studied through simulation after the mathematic model was built. The simulation results showed that the blade pitching system with a PID control algorithm has good dynamic characteristics, and with the designed pitching system the turbine＇ s power control can be performed.

关 键 词：潮流能 变桨距 系统设计 

分 类 号：TK73[交通运输工程—轮机工程]