| Title |
Auto-Diagnosis for Stator Winding Faults Using Distortion Ratio of Park's Vector Pattern |
| Authors |
송명현(Song, Myung-Hyun) ; 박규남(Park, Kyu-Nam) ; 한동기(Han, Dong-Gi) ; 양철오(Yang, Chul-Oh) |
| Keywords |
Auto-Diagnosis ; Park's Vector Pattern ; Distortion Ratio ; Stator Winding ; Fault |
| Abstract |
In this paper, an auto-diagnosis method of the stator winding fault for small induction motor is suggested. 3-phase stator currents are sampled, filtered, and transformed with Park's vector transformation. After then Park's vector patterns are obtained. To detect the stator winding fault automatically, a distortion ratio is newly defined and compared with the one of healthy motor, and the threshold levels of distortion ratio are suggested. The 2-turn, 4-turn, 8-turn winding fault are tested with no load, 25%, 50%, 75%, and 100% rated load. The distortion ratio of the Park's vector patterns are increased as the increase of the faulted turns, but are same as the increase of the load. |