Real time wind turbine simulator

A novel dynamic real-time wind turbine simulator (WTS) is developed in this thesis, which is capable of reproducing dynamic behavior of real wind turbine. The WTS is expected to reduce the system testing cost, provide an indoor test platform for the generator, controller and interface apparatus development. In WTS, the turbine is represented by mathematical model and the output torque is precisely conrolled on a dc motor drive. By employing the PWM rectifier with LCL filter, the energy is bidirectional which makes the WTS is universal to different scale turbine/generator configurations. PWM rectifier with LCL filter is detail analyzed with different current sensor positions. The results from different sensor positions are compared. A novel torque sensorless inertia compensation algorithm is developed, which enables the WTS to simulate the real wind turbine not only in steady state but also the dynamic procedures in real-time. Simulation and experiment were carried on the 2kW prototype system. Results from both verify the developed scheme of WTS.