(57) Abstract As for the speed sensor less induction machine control system, operating the induction machine when it is saturated largely, possessing with the size of rotor magnetic flux vector and the rotor magnetic flux calculator which decides position the projection angle which was induced by the signal injector and stator voltage and voltage which throw the interchange signal which was adjusted with the projection detector and the projection axis which detect the angle of the projection which was induced by the magnetic flux regulator torque electric current computer and the saturation which form the projection which is induced by saturation electric current decisive vessel and the saturation which decide electric current, making use of the stator voltage which is decided, and the stator electric current which is decidedIt is. The magnetic flux regulator torque electric current calculator has reached the point where the induction machine is controlled making use of rotor magnetic flux vector.
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