Control of power converters in the brushless doubly fed induction generator with rotary transformer
Brushless doubly fed induction generators (BDFIGs) show commercial promise for wind-power generation due to their lower capital and operational costs and higher reliability as compared with doubly fed induction generators. This paper proposed a control method of power converters in the brushless doubly fed induction generator with rotary transformer (BDFIG-RT), which operate as a variable-speed generator. The proposed controller is designed on the rotating dq reference frame, and simulated in Matlab Simulink. The simulation results show that the proposed controller has good dynamic performance when changes in wind speed and short circuit fault on grid. Thanks to this control system, the generator is still connected to the grid, and operates stably during a short circuit fault.