It is very important to obtain smooth power and limit over-currents in grid-connected doubly fed induction generator (DFIG)-based wind turbines. Therefore, the rotor resistance unit can be used for power and over-currents control in DFIG. However, it may be insufficient to reduce oscillations in large power systems. This study aims to develop a new rotor resistance unit for low voltage ride through (LVRT) capability in DFIG. Moreover, electromotive-force (emf) models have been also developed in the stator and rotor circuit. The stator emf model of the simulation study was developed in the DFIG for accuracy and speed, while the rotor emf model was developed for over-current occurring in transient situations. In using the new rotor resistance unit and the stator-rotor emf, it was observed that the system stabilized in a short time, and the oscillations formed by the balanced and unbalanced faults on the grid side were damped.

在并网双馈感应发电机（DFIG）的风力涡轮机中，获得平稳的功率并限制过电流非常重要。因此，转子电阻单元可用于DFIG中的功率和过电流控制。但是，在大型电力系统中减少振动可能不足。这项研究旨在为DFIG中的低压穿越（LVRT）能力开发一种新的转子电阻单元。此外，在定子和转子电路中还开发了电动势（emf）模型。仿真研究的定子电动势模型是在DFIG中开发的，以提高准确性和速度，而转子电动势模型是针对瞬态情况下发生的过电流而开发的。在使用新的转子电阻单元和定子-转子电动势时，观察到系统在短时间内稳定下来，