风力发电机组变桨系统的设计

为了解决风力发电机组在复杂多变的风况下,能够基本保持其发电机稳定运转的问题,将PLC、变频器技术应用到风力发电机的变桨系统中。开展了变桨系统自动控制的分析,建立了PLC、变频器和变桨电机之间的关系,利用PLC及PLC的模拟量输入模块对风电场自然风风速以及风力发电机组3片桨叶的桨距角度进行了数据信息的采集,并自动进行了内部数据的处理;然后再通过对变频器的输出控制进而控制变桨电机的工作状态,使3片桨叶旋转到与自然风风速相对应的桨距角度。在发电机能自动保持稳定运转的基础上,对其性能进行了评价。分析和验证结果表明,该系统实现了对风力发电机组变桨系统的自动控制。

Design of wind power generators change oars system

In order to solve the problems that the wind generator set in the complex wind condition can basic maintain the stability running, the PLC, frequency changer technology was investigated to the wind power generators change oars system. After the analysis of change oars system automatic control, the relationship between the PLC, frequency changer, and the change oars motor was established. The PLC and PLC analogue inputs module were used to collect the natural wind speed and the wind power generators three blades＇s angle data information, and the internal data was processed automatically. Through the control of frequency changer output, and then the change oars motor working condition was controlled, making three piece of blades rotate on and natural wind speed with the oars angle of the corresponding. The performance was evaluated on the condition that the generator can automatically remain stable operation. Through the analysis and verification, the results show that the system realizes the automatic control of the wind power generators change oars system.