Vector control apparatus and method for induction motor using magnetic flux observer of full order

摘要

In a vector control apparatus and method for an induction motor, a magnetic flux observer of a full order is provided for receiving a primary voltage vector (v1) and a primary current vector (i1) and for generating a vector related to an estimated secondary magnetic flux component to be supplied to a current command calculating section and related to an estimate rotation phase of a rotary coordinate system to be supplied to a current controlling section based on the primary voltage vector and the primary current vector, the magnetic flux observer of the full order having a plurality of coefficients expressed in circuit constants of a T-I type equivalent circuit of the induction motor. <IMAGE>