US 11,658,547 B2
Method of calibrating a variable-speed blower motor
Stephen J. Vendt, Lewisville, TX (US); Austin Clay Styer, Melissa, TX (US); Palanivel Subramaniam, Richardson, TX (US); Sunil K. Khiani, Plano, TX (US); Wei Wang, Fort Wayne, IN (US); and Nasim Rahman, Allen, TX (US)
Assigned to Lennox Industries Inc., Richardson, TX (US)
Filed by Lennox Industries Inc., Richardson, TX (US)
Filed on Sep. 14, 2022, as Appl. No. 17/944,491.
Application 17/944,491 is a continuation of application No. 16/903,434, filed on Jun. 17, 2020, granted, now 11,482,909.
Prior Publication US 2023/0006518 A1, Jan. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 11/20 (2016.01); F24F 11/77 (2018.01); G01R 31/34 (2020.01); H02K 11/33 (2016.01); G06K 19/077 (2006.01); 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); G06K 19/07749 (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 calibrating a motor assembly, the method comprising:
selecting an electric motor and a motor controller for the motor assembly of a heating, ventilating, and air conditioning (HVAC) system;
obtaining at least one electric motor parameter of the electric motor;
determining, using the at least one electric motor parameter of the electric motor, an expected torque output of the motor assembly;
determining a correction factor for the electric motor based upon the determined expected torque output of the motor assembly;
programming the motor controller with the correction factor; and
wherein the determining the correction factor consists of determining a measured rotor flux of the electric motor, a friction torque slope of the electric motor, and a friction torque bias of the electric motor.