Power Control Strategy for a SCIG Wind Turbine Generator

This research paper presents a new approach to examine the behavior of a grid connected Squirrel Cage Induction Generator (SCIG) system, both in steady state and dynamic condition. The SCIG which is driven by a wind turbine via a gearbox, is connected to the distribution system through Power Electronics Converters (PECS), filters, and step-up transformers. The main focus of this paper is on the vector strategy employed for the SCIG, which allows independent control of flux and electromagnetic torque on the PWM converter, while achieving maximum power point tracking (MPPT). The grid side converter plays a crucial role in regulating the DC link voltage, injecting active power through d-axis current, and controlling reactive power injection through q-axis current. The effectiveness of the proposed method is demonstrated through simulation results. The simulation of the entire system are conducted within the MATLAB/Simulink environment, and the obtained results are considered satisfactory.