| Abstract |
An Internal Model Control (IMC) structure, used in an indirect vector control scheme, is presented in this paper. It describes a digital robust control approach which allows the obtention of a complete decoupllng between the two stator current components with respect to rotating axes (d,q), and the verification of a dynamic behaviour independent of the working point. The IMC controller design, based on desired closed-loop transfer matrix and combined with the gain scheduling method is explained. Furthermore, a model smoothing concept is introduced in order to minimize disturbances resulting from transition between adjacent models during continuous variation of rotor speed. Finally, simulation and experimental results obtained on a industrial drive system are presented demonstrating performances of the proposed IMC control. |
