Hybrid eccentricity fault diagnosis method for permanent magnet synchronous motor

• Main Authors: ZHAO YUE, MA CONGGAN, ZHANG XINGXING, SUN QILI, LI QIONGYAO, GAO FA, WANG JINHAO, YUE JIAN
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a hybrid eccentricity fault diagnosis method for a permanent magnet synchronous motor. The method comprises the following steps: arranging detection coils on stator teeth of the permanent magnet synchronous motor; building a permanent magnet synchronous motor finite element model for arranging a detection coil under different mixed eccentric working conditions; obtaining mixed eccentricity fault diagnosis indexes of each detection coil under different mixed eccentricity working conditions; establishing a permanent magnet synchronous motor hybrid eccentricity fault diagnosis model based on the neural network; and mixed eccentricity fault diagnosis of the to-be-diagnosed permanent magnet synchronous motor. According to the method, the static eccentricity rate, the static eccentricity circumference angle and the dynamic eccentricity rate of the motor can be rapidly and accurately identified based on the voltage signal of the detection coil, the diagnosis precision of the static eccentrici