首页>
外国专利>
EARLY DETECTION OF MOTOR STATOR WINDING FAULTS
EARLY DETECTION OF MOTOR STATOR WINDING FAULTS
展开▼
机译：电机定子绕组故障的早期检测
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and system for detecting a fault in a permanent magnet synchronous motor (PMSM), operably connected to a controller. The method includes receiving at a controller a stator voltages and currents for the PMSM, computing a negative sequence current and a negative sequence voltage for the PMSM; and determining if conditions are satisfied for monitoring for a fault of the PMSM. The method also includes ascertaining a change in the negative sequence current and a change in the negative sequence voltage for a selected time duration, calculating a ratio of the change in the negative sequence current and the negative sequence voltage corresponding to a negative sequence admittance for the PMSM, determining if the negative sequence admittance differs from a nominal value in excess of a threshold; and identifying the stator winding as faulted if the ratio exceeds the threshold.
展开▼
