ASYNCHRONOUS MOTOR VECTOR CONTROL SYSTEM

摘要

A vector control system for an asynchronous motor, which is synthesized in coordinate system d, q, 0, uses direct and quadrature regulation channels, value of flux linkage and rate are determined via corresponding units from values of stator voltages and currents, taking into account losses in steel via incorporation to the system of a state controller depending on inductivity of a magnetization contour L, the controller determines L depending on L = f (I), where as magnetization current I the current of direct channel Id is used, improved value L is used in adaptive regulators and to improve motor angle speed calculation; moreover a filter for angle speed signal is used, which is installed behind the angle speed calculation unit.