Directly Implemented Flux/Torque Control: Induction Motor Vector Control Without an Encoder, 1997 Process Control, Electrical & Info. Conference Proceedings
The basic evolution of directly implemented flux / torque control (F/T control) from other drive types is explained. Qualita-tive comparisons with other drives are included. The basic concepts behind F/T control are clarified. An explanation of direct self-control and the field orientation concepts implemented in the adaptive motor model block is presented. The reliance of the control method on fast processing techniques is stressed. The theoretical foundations for the control concept are provided in summary format. Information on the ancillary control blocks outside the basic F/T control is given. The implementation of special functions directly related to the control approach is described. Implications for pulp and paper applications is discussed. Finally, performance data from an actual system is presented.