| Title |
A Study on the Diagnosis Method of Bearing Fault Connected to IPMSM Using First Order Deadbeat Torque Observer |
| Authors |
윤인식(In-Sik Yoon) ; 배홍주(Hong-Joo Bae) ; 김승택(Seung-Taik Kim) ; 오귀운(Gwi-Un Oh) ; 고종선(Jong-Sun Ko) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.10.1159 |
| Keywords |
Bearing Fault Detection; IPMSM; First Order Deadbeat Torque Observer; Band-Pass Filter |
| Abstract |
Ball bearings are used in many mechanical devices with dynamic characteristics. When a failure occurs in a motor or pump, there are many failures due to the ball bearing. So, research on the diagnosis of ball bearing failures is being actively conducted. When a ball bearing fails, vibration occurs due to the natural frequency component of each part, which increases the friction between the ball bearing and the rotating shaft. This increases the load torque applied to the rotating machine performing rotational motion.
In this paper, the torque was observed through the first order deadbeat torque observer for fault diagnosis of ball bearings connected to the IPMSM, and then it is filtered with BPF. The filtered value is used to detect the magnitude in the failure frequency band, and it is applied to the failure diagnosis algorithm to determine whether there was a failure. The proposed fault diagnosis algorithm was verified through simulation using MATLAB/Simulink. In addition, the fault diagnosis algorithm was verified by attaching a bearing housing to the M-G set consisting of 4 IPMSM and 5.5 IM. |