US 11,955,848 B2
Method of calibrating a variable-speed blower motor
Nasim Rahman, Allen, TX (US); Wei Wang, Fort Wayne, IN (US); Yan Yang, Wylie, TX (US); and Ty Winkler, Dallas, TX (US)
Assigned to Lennox Industries Inc., Richardson, TX (US)
Filed by Lennox Industries Inc., Richardson, TX (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,660.
Application 18/112,660 is a continuation of application No. 16/903,497, filed on Jun. 17, 2020.
Prior Publication US 2023/0198343 A1, Jun. 22, 2023
Int. Cl. H02K 11/20 (2016.01); F24F 11/77 (2018.01); G01R 31/34 (2020.01); H02K 11/33 (2016.01); H02P 6/06 (2006.01); H02P 6/08 (2016.01)
CPC H02K 11/20 (2016.01) [F24F 11/77 (2018.01); G01R 31/343 (2013.01); H02K 11/33 (2016.01); H02P 6/06 (2013.01); H02P 6/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of calculating a correction factor for an electric motor, the method comprising:
obtaining at least one electric motor parameter of the electric motor;
calculating the correction factor for the electric motor of a heating, ventilating, and air conditioning (HVAC) system based on the at least one electric motor parameter, wherein the calculating the correction factor consists of:
determining an amount of torque loss acting against the electric motor;
determining a saturation starting point torque level of the electric motor;
determining a saturation torque slope of the electric motor;
determining a torque scaling factor of the electric motor; and
programming a motor controller associated with the electric motor with the correction factor.