Identification of an Induction Motor by a Microcomputer based Structure

Abstract The paper deals with the parameter estimation of an induction motor performed through a microcomputer based data acquisition system and recursive identification algorithms (RLS and RGLS) implemented by means of a general purpose computer. The microcomputer based data acquisition system is essentially made by connecting the Z80 CPU with its peripherals and auxiliary memories through a bus standard. The motor is represented by a classical 5th order model linearized around a usual working point; an approximate 3rd order model, obtained via balanced realization, gives very good agreement with the original one according to the identification aims and to the measurement set efficiency The motor estimation is performed through recursive algorithms in unified forin according to the discrete model structure. Finally an original CAD procedure is utilized to determine the electrical parameters.