公开(公告)号：US20240204638A1

公开(公告)日：2024-06-20

申请号：US18279391

申请日：2021-11-29

申请人： SOUTHEAST UNIVERSITY

发明人： Wei HUA ,  Yuchen WANG ,  Kai LIU ,  Chao ZHANG

IPC分类号： H02K29/08 ,  H02K11/215 ,  H02P21/18

CPC分类号： H02K29/08 ,  H02K11/215 ,  H02P21/18

摘要： Disclosed are a method and system for measuring a flux-switching electric motor rotor angle on the basis of linear Hall. The method comprises: firstly, selecting four linear Hall sensors and respectively mounting same in four slots of a stator; a first linear Hall sensor is mounted in any slot of the stator, and a second linear Hall sensor is spaced apart from the first linear Hall sensor by N1 slots in a unified direction; N1 is an even number, and N1≠ks/(2p); a third linear Hall sensor is spaced apart from the first linear Hall sensor by N2 slots; N2 is an odd number, and N2=(2k−1)s/(2p); and a fourth linear Hall sensor is spaced apart from the second linear Hall sensor by N2 slots; and then calculating an electric motor rotor angle according to voltage signals of the four linear Hall sensors.

公开(公告)号：US20240183649A1

公开(公告)日：2024-06-06

申请号：US18279211

申请日：2021-11-29

申请人： SOUTHEAST UNIVERSITY

发明人： Wei HUA ,  Yuchen WANG ,  Chao ZHANG ,  Kai LIU

IPC分类号： G01B7/312 ,  G01R33/07

CPC分类号： G01B7/312 ,  G01R33/072

摘要： A linear Hall-based eccentricity diagnosis method and detection system for a permanent magnet motor. First, three linear Hall elements are mounted in stator slots at the same space interval, respectively; second, analog signals output by the three-phase linear Hall are converted into digital signals by means of a digital signal processor, and the digital signals are converted into a quadrature signal by means of linear combination; then, a negative sequence signal and a sideband signal are extracted from the quadrature signal by means of a complex factor filter; then the amplitude of the negative sequence signal and the amplitude of the sideband signal are extracted by means of synchronous reference frame phase-locked loops as a static eccentricity indicator and a dynamic eccentricity indicator; finally, percentages representing the degrees of eccentricity are calculated from the static eccentricity indicator and the dynamic eccentricity indicator in the digital signal processor.