The thesis mostly studies the way of control and analysis the character of vscf double - fed wind power system 本文主要研究双馈型变速恒频风力发电系统的控制手段及其特性的分析。
Many methods have been found out . some people think that the direct method is the most suitable way to doubly fed induction machine 人们研究出多种速度辨识方法，有文献指出，双馈电机一般采用直接法比较方便。
Using the s function of matlab the paper presents the simulation model of the double - fed machine and analyses the startup character of the double - fed machine 用matlab的s函数建立双馈电机仿真模型，对双馈电机起动性能进行分析。
For wind machines and pump load widely used in industry , the more desirable speed adjustment strategy is doubly fed regulation in order to save energy 对于工业中大量应用的风机、泵类负载，为实现节能，比较好的调速方案是采用双馈调速。
Next , the control technique and arithmetic of doubly - fed vscf wind power generator are also studied in detail , including some of author ' s sights 其次，对变速恒频双馈风能发电的控制技术及其控制算法进行了详尽的研究，其中不乏有作者自己独到的见解。
A setback at the double fed running test has been understood not as a problem but a signaling for the indispensable study on the control strategy and system of doubly fed operation 对测试过程中双馈运行的分析，表明了双馈控制策略和控制系统的重要性。
As this adjustable speed system of doubly - fed motor normally needs a bi - directional converter . it ' s control technique is complicated and it ' s cost is rather expensive 由于双馈电机调速系统通常采用双向变流器，控制技术复杂，成本较高，限制了它的应用。
In the first stage , due to the research in years on the magnetic field modulation type doubly fed brushless machine , two doubly fed generators was requested to fabricate 首先，利用我们研究所在磁场调制式无刷双馈电机的多年研究成果，研制并测试两台无刷双馈发电机。
The cascade brushless doubly - fed machine was the prototype of the brushless doubly - fed machine , the study of the principle for the former was fundamental to the research of the latter 作为无刷双馈电机的原型,级联式无刷双馈电机对无刷双馈电机的研究具有基础性的指导意义。
After the detail account of the performance of the variable speed system , we know that if the machine carries out completely speed control , it must use the vector decoupling of the mt voltage 对双馈电机的调速性能进行了详细讨论，得知双馈电机要完全进行调速必须实现mt轴转子电压矢量的完全解耦。
