US 12,283,910 B2
Model-based health monitoring of electric motors
Ganga P. Jayaraman, Buffalo Grove, IL (US); and Steven Adams, Park Ridge, IL (US)
Assigned to Woodward, Inc., Fort Collins, CO (US)
Filed by Woodward, Inc., Fort Collins, CO (US)
Filed on Dec. 5, 2022, as Appl. No. 18/075,165.
Prior Publication US 2024/0186922 A1, Jun. 6, 2024
Int. Cl. F04B 49/06 (2006.01); H02P 7/22 (2006.01); H02P 7/32 (2006.01)
CPC H02P 7/22 (2013.01) [H02P 7/325 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An electric motor health monitoring system comprising:
an estimator module configured to model one or more estimated motor values of an electric motor based on one or more motor control parameters and one or more motor control states;
a non-transitory computer readable medium; and
a fault detector module configured to (1) provide a motor fault signal representative of a presence of a fault of the electric motor and based on the modeled one or more estimated motor values of the motor and a predetermined parameter threshold value, and (2) modify the non-transitory computer readable medium based on the motor fault signal.
 
12. A method of monitoring electric motor health, comprising:
receiving one or more motor control states of an electric motor;
estimating one or more estimated motor values of the electric motor based on one or more of the received motor control states and one or more motor control parameters;
comparing one or more of the estimated motor values to a predetermined parameter threshold value;
providing a motor fault signal representative of a presence of a fault of the electric motor based on the comparing; and
modifying a non-transitory computer readable medium based on the provided motor fault signal.
 
23. An electric motor control system comprising:
a motor controller configured to determine one or more motor control states and provide the one or more determined motor control states to an electric motor; and
a motor health monitor comprising:
an estimator module configured to model one or more estimated motor values of the electric motor based on one or more motor control parameters and the one or more motor control states; and
a fault detector module configured to (1) provide a motor fault signal representative of a presence of a fault of the electric motor and based on the modeled one or more estimated motor values of the electric motor and a predetermined motor value threshold value, and (2) modify a non-transitory computer readable medium based on the provided motor fault signal.