Asymmetric effect of static radial eccentricity on the vibration characteristics of the rotor system of permanent magnet synchronous motors in electric vehicles

2019 ◽  
Vol 96 (4) ◽  
pp. 2581-2600 ◽  
Author(s):  
Feng Liu ◽  
Changle Xiang ◽  
Hui Liu ◽  
Lijin Han ◽  
Yunhao Wu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Vibration Characteristics ◽  
Rotor System ◽  
Asymmetric Effect ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

scholarly journals Review of intelligent fault diagnosis for permanent magnet synchronous motors in electric vehicles

2020 ◽  
Vol 12 (7) ◽  
pp. 168781402094432
Author(s):  
Xiaowei Xu ◽  
Xue Qiao ◽  
Nan Zhang ◽  
Jingyi Feng ◽  
Xiaoqing Wang
Keyword(s):  
Fault Diagnosis ◽  
Permanent Magnet ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Health Management ◽  
Development Trend ◽  
Operating Conditions ◽  
Intelligent Fault Diagnosis ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

Permanent magnet synchronous motors are the main power output components of electric vehicles. Once a failure occurs, it will affect the vehicle’s power, stability, and safety. While as a complex field-circuit coupling system composed of machine-electric-magnetic-thermal, the permanent magnet synchronous motor of electric vehicle has various operating conditions and complicated condition environment. There are various forms of failure, and the signs of failure are crossed or overlapped. Randomness, secondary, concurrency, and communication characteristics make it difficult to diagnose faults. Based on the research of a list of related references, this article reviews the methods of intelligent fault diagnosis for electric vehicle permanent magnet synchronous motors. The research status and development trend of fault diagnosis are analyzed. It provides theoretical basis for motor fault diagnosis and health management in multi-variable working conditions and multi-physics environment.

scholarly journals Failure Diagnosis of Demagnetization in Interior Permanent Magnet Synchronous Motors Using Vibration Characteristics

2019 ◽  
Vol 9 (15) ◽  
pp. 3111 ◽  
Author(s):  
Takeo Ishikawa ◽  
Naoto Igarashi
Keyword(s):  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Vibration Characteristics ◽  
Failure Diagnosis ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Light Load ◽  
Interior Permanent Magnet ◽  
High Degree

The detection of a precursor to the demagnetization of permanent magnets is very important because a high degree of reliability is necessary in permanent magnet synchronous motors (PMSMs). This paper investigated the diagnosis of very slight PM demagnetization. A part of the permanent magnet was altered to non-magnetic material so as to mimic the effect of demagnetization. The vibration characteristics were clarified for low demagnetization in PMSMs driven under vector control by experiments and 3D finite element (FE) analysis. We found that the amplitude of some components of the vibration was approximately proportional to the demagnetization level of the PM and the load torque. Therefore, the measurement of vibration and torque is very useful for the estimation of the magnetization level of PMSMs under vector control except for under very light load.

Nonlinear vibration of permanent magnet synchronous motors in electric vehicles influenced by static angle eccentricity

2017 ◽  
Vol 90 (3) ◽  
pp. 1851-1872 ◽  
Author(s):  
Feng Liu ◽  
Changle Xiang ◽  
Hui Liu ◽  
Lijin Han ◽  
Yunhao Wu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Nonlinear Vibration ◽  
Electric Vehicles ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors
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