The speed control performance improvement of a detuned indirect field-oriented (IFO) induction motor drive is studied. First, the dynamic behaviour of a detuned IF0 induction motor drive is observed, and its transfer function model is established. Then a proportional plus integralderivative (PI-D) two-degree-of-freedom controller (2DOFC) is designed for an ideal I F 0 induction motor drive for ...

The application of conventional wind turbines on board a vessel creates a number of new challenges for turbine control systems. Thrust force is used in marine applications as an additional control variable for propulsion of the vessel. Variability of the wind speed and wind direction, together with the yaw rate and range constraints, impose strong requirements on the turbine control system. A n...