Patent ID: 8975842
Filing Date: 2015-03-10
Classification: H02P

Abstract:
1. A method of controlling a three-phase permanent magnet motor by generating two-phase control signals, the two phases defined as a d-phase and a q-phase, the d-phase and q-phase having a d-phase winding and a q-phase winding, respectively, separated by ninety (90) degrees, comprising: generating a rotation speed value representing a rotation speed of the permanent magnet motor based on a q-current reference value and a q-current feedback value, the q-current reference value and the q-current feedback value corresponding to the q-phase winding; generating a d-phase voltage change value based on a d-current reference value and a d-current feedback value, the d-current reference value and the d-current feedback value corresponding to the d-phase winding; generating a first d-phase voltage value based on the rotation speed value, the d-phase voltage change value, the d-current reference value and the q-current reference value; and generating a first q-phase voltage value based on the rotation speed value, the q-current reference value and the d-current reference value.