Patent ID: 8810168
Filing Date: 2014-08-19
Classification: H02P

Abstract:
1. A rotating machine controller that feedback-controls a torque of the rotating machine to a required torque by operating a voltage applying circuit that applies voltage to the rotating machine equipped with a permanent magnet comprising: a norm setting means that sets a vector norm of an output voltage of the voltage applying circuit; a phase control means that controls a phase of the output voltage of the voltage applying circuit so that a torque of the rotating machine is feedback-controlled to the required torque; an abnormality determination means that determines whether abnormalities arise in a magnetic flux of the permanent magnet based on the phase controlled by the phase control means; and a region setting means that sets a normal region of the phase controlled by the phase control means using at least two parameters among the vector norm of the output voltage, a revolving speed of the rotating machine, and the required torque as inputs; wherein, the abnormality determination means determines that the abnormalities are arisen in the magnetic flux of the permanent magnet based on the phase controlled by the phase control means departing from the normal region.