Type 4 Wind Turbine Design and Development of Grid Code Algorithms

In this study, a wind turbine design is proposed that complies with the Turkish grid code. The proposed design consists of the control algorithms of the grid connection regulations of the squirrel cage asynchronous generator (SCIG) and full-scale power converter (FSPC) configuration with 5 MW grid output power, which is called the type 4 wind turbine (WT). The FSPC design based on the 2-level full bridge IGBT model will be explained step by step under three main parts and a case study is conducted for the grid codes. First of all, the control of SCIG by the rectifier module of FSPC with the indirect field oriented control algorithm is explained. In the second part, the energy transferred to the DC busbar with the rectifier modules of FSPC is transferred to the grid with the help of control algorithms created on the inverter according to the grid requirements. Finally, simulation studies of FSPC control algorithms of wind turbines, which will provide solutions to Turkish electrical grid regulations, is carried out.