In this paper, the mathematical model of DFIG and variable pitch system is established.
本文分别分析了双馈发电机和变桨距系统的数学模型。
It is a policy of controllable vector in directional stator magnetic field that the MW DFIG use.
而双馈异步风力发电机采用的是定子磁场定向的矢量控制策略。
Combined with reasonable simplified conditions, the paper establishes the model of the DFIG system.
结合合理的简化条件，建立绕线式双馈风力发电系统的数学模型。
With the increasing capacity of DFIG wind farm, the restriction of grid code to wind farm is more rigorous than ever.
随着双馈电机风电场在电网中容量比重的增大，电网导则对风电场的规范和约束也在增强。
The appropriate control strategy is the key to good regulation performance operational flexibility and Reliability of DFIG.
采用合适的控制策略是发电机能够发挥其良好的调节性能、运行的灵活性及可靠性的关键。
The modeling of a grid connected DFIG system is first set up and research is carried out to argue the stability of the single generator.
首先在风力发电系统建模的基础上，研究了双馈风力发电机本体的小信号稳定性。
It consists of a doubly fed induction generator (DFIG) and a voltage-source pulse width modulation (PWM) rectifier-inverter used, as an AC exciter.
它由双馈电机(DFIG)和作为交流励磁电源的电压源型双pwm变换器组成。
This thesis builds a simple mathematical model for the controllable principle, transient stability and harmonic waves of the DFIG, and analyses them.
本文对双馈发电机的控制机理、稳定性和谐波成分建立简单的数学模型，进行了一定的分析。
This technology can change the DFIG technology world because the power Semiconductor technology is getting more compact and this is a perfect combination.
该技术能改变双馈风机世界。越来越紧凑的功率半导体技术，能做到两种类型变频器的完美融合。
The low-frequency instability in variable speed constant frequency doubly fed induction generator(DFIG) widely used in wind power generation is investigated.
研究了广泛应用于风力发电的变速恒频双馈感应电机系统中的低频不稳定现象。
The strategy can realize cutting-in without accurate parameters of doubly-fed induction generator(DFIG)and the controller can be designed without accurate DFIG model.
该控制方案不需要精确电机参数就可以实现并网，控制器的设计也不需要建立精确的数学模型。
During the power oscillation of a power system, a damping active power is injected into the network from the DFIG machine via regulating the rotor excitation voltage Angle.
在系统发生功率振荡时，通过改变转子励磁电压的相角调节双馈变速风电机组输出与振荡相关的阻尼功率，达到使风电场能够改善系统阻尼的目的。
The simulation results indicate that the system has good dynamic performance, DC bus voltage is stable and has small fluctuations, and it satisfies the demand of DFIG excitation.
仿真结果表明，双馈发电机控制系统具有良好的动态控制性能，直流母线电压稳定，波动小，能够满足双馈发电机交流励磁的需要。
A new excitation control strategy is proposed for the rotor side converter in a doubly fed induction generator (DFIG) to allow the system to ride through a symmetrical grid fault.
提出了一种电网对称故障时保持双馈感应风力发电机不脱网运行的新型励磁控制策略。
A new excitation control strategy is proposed for the rotor side converter in a doubly fed induction generator (DFIG) to allow the system to ride through a symmetrical grid fault.
提出了一种电网对称故障时保持双馈感应风力发电机不脱网运行的新型励磁控制策略。
应用推荐