چكيده به لاتين
In this paper, wind turbine performance is simulated and analyzed using a permanent magnet synchronous generator (PMSG) in a frequency disturbance.The system presented in this research includes a wind turbine, a permanent magnet synchronous generator, a rectifier,a back to back converter with DC-linked capacitor. Frequency droop control is widely used in wind turbine-based permanent magnet synchronous generators to support grid frequency. However, under frequency deviation, significant fluctuations in the DC link voltage may occur during the transition process, sudden changes in the active power of the two ends of the DC link capacitor, which will lead to the damage of the said capacitor. In other words, the main goal of this research is to transfer the maximum productive power of the generator (active power) to the grid in normal working conditions. Also, when there is a frequency disturbance at the connection point of the microgrid to the national grid, which causes the frequency to decrease, all the generator capacity or most of it will be allocated to active power; By injecting active power to the connection point, the frequency will return to its previous condition to prevent overloading or, in worse cases, network shutdown. And similarly, in the form of frequency disturbance, as the frequency increases, the control model somehow tries to consume excess active power so that the frequency of the network at the connection point decreases by increasing the rotor speed of the permanent magnet synchronous generator.To address this issue, a comprehensive control strategy including current feedforward control is proposed for PMSG-based WTs to reduce DC voltage fluctuations when WTs provide frequency support under grid frequency deviations. Meanwhile, the desired supportability of PMSG-based WTs and the stability of the turbine-generator assembly can be guaranteed. Meanwhile, the desired supportability of PMSG-based WTs and the stability of the turbine-generator assembly can be guaranteed.
