Optimal vector control for wound rotor salient pole synchronous motors over full speed range

This contribution introduces an optimal control for wound rotor salient pole synchronous motor intended for a new mining machine drive. The optimum considers demand for maximum torque of the motor. Hence, the main idea is to find optimal values of stator flux current I_sd and rotor field excitation current I_f to achieve maximum available torque of the machine. This contribution describes proposed control. The theoretical conclusions are verified by simulation results and extensive experiments made on developed down-scale prototype of the investigated drive.