Small wind turbine emulator with separately excited DC motor using analog electronic circuit

In this paper, a small wind turbine emulator (WTE) using separately excited DC motor is modelled, simulated, and implemented. An armature controlled 1 HP separately excited DC motor driven by a thyristor DC drive with closed loop cascaded PI controller is used to emulate the characteristics of the rotor of small wind turbine. The DC motor is loaded by a separately excited DC generator. A small cheap analog electronic circuit with less interfacing is designed and implemented to emulate the governing equation of a small wind turbine rotor. This circuit generates a specific reference rotor speed based on the wind turbine rotor characteristics and the mechanical wind power available based on the wind speed. Modelling, simulation and experimental results are presented.