According to wind speed variation, under rated wind speed, wind power system was controlled by maximum power point tracking ( MPPT) scheme, wind power system maximum output power was realized; 根据风速的变化,在额定风速以下采用最大功率点追踪控制,以实现风电系统输出功率最大;
When the parameters such as the rated capacity, the rated voltage and the rated reactive power are inputted, the structure parameters, the electromagnetic parameters and the distribution of magnetic field can be computed and output by the software. 用户在使用此软件时,只需要输入额定容量,额定电压和电抗率等参数,就可以通过软件计算并优化得到电抗器的结构参数和电流、电感、损耗、重量以及磁场分布。
This article discussed the factors that limit the rated power output of the motors from the aspects of design theory, normal and special working conditions. The article also gave a brief introduction to condition monitoring and measures for increasing power outputs cf steel rolling mill motors. 本文从设计理论、运行条件、特殊工况等方面出发,阐述了限制大型直流电动机出力诸因素,并简要地介绍了轧钢电机状态监测技术以及提高出力的措施。
When tested in the engine test-bed with rated power and rated rotate speed, the combustion output power of the substitute fuel was equal to that of the diesel fuel. 在额定功率和额定转速的发动机台架实验中,测得替代燃料燃烧的输出功率与柴油的基本相当;
For rated power output of inverter, the efficiency is larger than 90%, and its maxim is 92. 9%. 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%;
The rated output power of one module is 333 VA and the switching frequency of inverter is high to 100 kHz, the double loops control method with the feedback of output voltage and current are used. 该变流器采用了模块化结构,由3个333VA单相DC/AC变换器组合而成,最高开关频率达100kHz,采用了电流电压双闭环DPM滞环控制。
Above rated, restricting the rotate speed or power to their limit to obtain steady and safety output. 该策略体现了变转速风力机的优越性:低速时追踪最优功率,高风速时限制转速/功率,使其输出平稳可靠。
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. 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。