ROTOR TIME CONSTANT ESTIMATION APPARATUS FOR INDUCTION MOTOR DIRECT VECTOR CONTROL, AND INDUCTION MOTOR DIRECT VECTOR CONTROL USING THE PROPOSED APPARATUS

摘要

induction motor vector control can directly e-corrective devices and estimated times for induction motor control system is presented using the same The. Apparatus for estimating the number of rotor time constant of the induction motor of the present invention is Gopinath model flux observer for calculating a Gopinath model estimated rotor flux from the stator voltage and current; Flux observer current model to calculate the estimated rotor flux from the stator current model voltage and current; The first circuit model to calculate the estimated time Gopinath Gopinath model estimated from the flux of each e-flux; A second circuit for calculating the current model and the current model estimates magnetic flux from the rotor flux angle; Gopinath model and the estimated flux angle and the current model estimate using each of the flux phase angle error and a PI controller for calculating an estimate of the number of rotor time constant. According to the present invention, Gopinath based on an estimated flux value model by the model flux observer, the flux estimates of the current model, the number of rotor time constant to apply the MRAC (Model Reference Adaptive Control) method for a real-time adaptive model values Gopinath is to improve the performance of the model flux observer has excellent control performance can be implemented directly by estimating a vector control system.