US 12,224,691 B2
Apparatus for detecting motor failure
Gwang Hyun Gye, Yongin-si (KR)
Assigned to Hyundai Mobis Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed on Aug. 25, 2022, as Appl. No. 17/895,419.
Claims priority of application No. 10-2021-0118216 (KR), filed on Sep. 6, 2021.
Prior Publication US 2023/0075730 A1, Mar. 9, 2023
Int. Cl. H02P 29/024 (2016.01)
CPC H02P 29/0241 (2016.02) [H02P 29/0243 (2016.02)] 20 Claims
OG exemplary drawing
 
1. An apparatus for detecting a motor failure, comprising:
a first motor failure detector configured to detect a voltage after applying a reference voltage for failure detection to a motor;
a first motor power switch and a second motor power switch configured to switch respective terminal voltages applied to drive the motor;
a gate amplifier configured to apply a gate signal for controlling turning on/off of the first and second motor power switches; and
a controller configured to diagnose a failure of the motor controlled in one direction of current flowing, based on the voltage detected by the first motor failure detector and potential differences of the first and second motor power switches.