桨距角

1
pitch angle
兆瓦级风力发电机组变桨距系统关键词：变桨距系统；ECSxA变频器；桨距角；非线性PID [gap=644]Key words：variable pitch system；ECSxA inverter；pitch angle；non—linear PID
2
pitch angle characteristics of rotor
... 叶尖速度tip speed 桨距角pitch angle characteristics of rotor 翼型airfoil ...
3
pitch angle of blade
... [叶片]扭角/twist angle of blade [叶片]桨距角/pitch angle of blade [叶片]安装角/setting angle of blade ...

短语

1
提出了一种改进的桨距角控制方案——将系统频率偏差信号引入桨距角控制系统。
An improved pitch control scheme is presented by introducing a frequency deviation signal into the control system.
2
变桨距是通过改变风力机叶片桨距角来改变风力机的转速，从而调整发电机输出功率。
Pitch angle control system can change pitch, accordingly regulate the rotational speed and output power by adjusting blade incidence of wind-driven device.
3
在此基础上，利用非线性动态逆方法，设计了系统在额定风速以上工作时的桨距角控制律。
On the basis of this model, the nonlinear dynamic inversion method was applied to design the pitch Angle controller of the system working above the rated wind speed.

桨距角
桨距角（Pitch Angle）也称节距角，出自航空的螺旋桨，顾名思义，就是桨叶距离上的夹角，主要原因是为了找一个参考平面，而这个平面又很容易被区分，所以找到了桨叶最顶端的截面，风机上的桨距角指的是叶片顶端翼型弦线与旋转平面的夹角。风力机采用变桨距控制，通过调整叶片迎风角度，来进行功率调整的方式，桨距角β是指风机叶片与风轮平面夹角。

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