基于多观测器的永磁同步电机退磁故障检测及电感失配影响消除方法

This letter proposes to use multiple sliding mode (SM) observers to accurately detect demagnetization fault (DF) for permanent magnet synchronous motors (PMSM). First, relying on the properties of the PMSM, three sequential SM observers including a flux linkage observer, a q-axis inductance observer, and a d-axis inductance observer are developed, with their stability discussed. Second, the estima...