US 12,451,826 B2
Adjustable phase advance for PM motor control
Andrei Dinu, Leicester (GB)
Assigned to Goodrich Control Systems, Solihull (GB)
Filed by Goodrich Control Systems, West Midlands (GB)
Filed on May 5, 2023, as Appl. No. 18/143,841.
Claims priority of application No. 22275063 (EP), filed on May 9, 2022.
Prior Publication US 2023/0361704 A1, Nov. 9, 2023
Int. Cl. H02P 21/28 (2016.01); H02P 21/00 (2016.01)
CPC H02P 21/28 (2016.02) [H02P 21/0003 (2013.01); H02K 2213/03 (2013.01); H02P 2205/03 (2013.01); H02P 2207/05 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of advancing phase of a DQ reference frame in a Field Oriented Control (FOC) algorithm for a permanent magnet motor, the method comprising:
monitoring a component of a stator voltage demand of the permanent magnet motor, wherein the component comprises one or more components of a Park transformation;
either (i) calculating a phase advance angle based on a gain multiplied by a difference between the component of the stator voltage demand and the threshold of the component if the component of the stator voltage demand exceeds a threshold of the component or (ii) setting the phase advance angle to zero if the component of the stator voltage demand is within the threshold of the component; and
advancing the phase of the DQ reference frame in the FOC algorithm based on the phase advance angle either (i) up to a maximum phase advance angle when motor speed is positive or (ii) down to a minimum phase advance angle when the motor speed is negative;
wherein the motor speed is positive based on one of a clockwise rotation or an anticlockwise rotation of a motor current vector and a motor voltage vector about a Q-axis and negative based on another of the clockwise rotation or the anticlockwise rotation of the motor current vector and the motor voltage vector about the Q-axis.