| Abstract |
An innovative structure and control concept of linear induction motors, which can produce arbitrary flux distribution in the gap, are proposed instead of a conventional concept of linear motors as an extension of rotary electric machines. High speed power switching devices are available with reasonable costs these days. It is, consequently, possible to use many switching semiconductor devices as a part of an electric machine at present. In the FSLIM (Flux Synthesizing Linear Induction Motor) each slot has a conductor which carries arbitrary electrical current controlled by a PWM current-control-unit. In this paper, authors have proposed a concrete method for decision of switching patterns to apply field-coordinates oriented control scheme to a tubular FSLIM, with an electromagnetic numerical analysis on a coaxial symmetric coordinates and a theory of linear systems. |
