额定输出功率

本文介绍一种能在单相电源电压变化率较大场合下，维持额定输出功率的连续或断续工作，并具有较高起动转矩和过载能力的双值电容异步电动机。

This paper introduces a design of two-value capacitor motor which remains in operation with rated output and presents satisfactory performance under the conditions that obvious voltage variation arises .

高于额定风速时，能保持机组的额定输出功率；

At above rated wind speed , it can keep rated output power of wind turbine .

电池模型的额定输出功率是3W，总效率最高达5.6%，有效寿命最长达三年以上。

The rated power is 3 watts and the total energy converting efficiency obtained is 5.6 % . The effective lifetime is more than 3 years .

在额定输出功率40W时，输出电流恒为1.7A，功率因数大于0.9，效率大于0.85。

For rated power output of 40W , the output current is constantly 1.7A , power factor is above 0.9 and the efficiency is larger than 0.85 .

采用本文的方法可获得高的额定输出功率、高功率密度和宽的调速范围。

Large rating output power , high power density and wide speed range are achieved .

三相并网逆变器额定输出功率时，效率大于90%，最大效率为92.9%；

For rated power output of inverter , the efficiency is larger than 90 % , and its maxim is 92 . 9 % .

当风力发电机组在额定输出有功功率跳闸退出电网时，对电网频率的影响最大；

Wind turbine generators have the biggest influence on grid frequency when the generators trip and exit the power grid at rated active output power .

控制器的输入为风机额定功率和实际输出功率的偏差，输出为桨距角命令值，由此构成一个闭环的系统。

The input of controller is the error between rated power and actual output power . The output of controller is pitch angle and than a closed-loop system is composed .

变桨距风力发电机组与定桨距风力发电机组相比，在额定功率点以上输出功率平稳、具有较高的风能利用系数、能够确保高风速段的额定功率、起动性能与制动性能好等特点。

Compared with fix-pitch wind turbine , the variable-pitch wind turbine has the virtue : stable output power over rated power , high wind power coefficient , holding rated power at high wind speed , good starting and shut-off etc.

在额定风速以上，使功率维持在额定输出，减少功率波动，并通过BLADED软件的仿真计算对控制策略进行了验证。

The control strategy has been validated by simulations in the BLADED software .