Patent ID: 6339308
Filing Date: 2002-01-15
Classification: H02P

Abstract:
A vector control method for a synchronous reluctance motor, which has a current control process for controlling to divide a stator current contributing to generation of a torque into a d-axis component and a q-axis component of a current vector on rotational d-q coordinates which consist of mutually orthogonal d and q axes mutually intersecting at right angles associated with vector rotators, wherein:a stator linkage flux is determined as a stator flux vector, the stator flux vector is divided into an in-phase flux vector having the same direction as the current vector and a mirror-phase flux vector determined as a difference between the stator flux vector and the in-phase flux vector, and estimates of cosine and sine of an intermediate angle of angles formed by the in-phase flux vector and the mirror-phase flux vector are used as a rotation signal for vector rotators.