Patent ID: 8525454
Filing Date: 2013-09-03
Classification: H02P

Abstract:
1. A controller for an AC rotary machine, the controller comprising: current vector detection means for detecting a current vector of the AC rotary machine and outputting the current vector as a detected current vector; AC rotary machine control means for referring to an estimated magnetic flux phase and outputting a voltage instruction vector such that the detected current vector coincides with a current instruction vector; voltage application means for applying a voltage to the AC rotary machine based on the voltage instruction vector; adaptive observation means for outputting the estimated magnetic flux phase based on the voltage instruction vector; and magnetic flux vector detection means for detecting a magnetic flux vector and outputting the magnetic flux vector as a detected magnetic flux vector, wherein the adaptive observation means outputs an estimated current vector and an estimated magnetic flux vector in addition to the estimated magnetic flux phase, based on a current deviation vector and an amplified deviation vector in addition to the voltage instruction vector, and the controller further comprises deviation vector calculation means for calculating the current deviation vector which is a deviation between the estimated current vector and the detected current vector and a magnetic flux deviation vector which is a deviation between the estimated magnetic flux vector and the detected magnetic flux vector and for outputting the calculated current deviation vector and the calculated magnetic flux deviation vector as the amplified deviation vector.