Aug 2026· 2026 IEEE International Conference on Mechatronics and Automation (ICMA)· pp. 1574-1579· 0 citations· 7 references
Abstract
This paper proposes a reliability analysis method and process for the rotor of a high-speed permanent magnet generator. Firstly, the typical structure of the magnetic bearing rotor of the high-speed permanent magnet generator is analyzed, and the rotor reliability block diagram is established. Based on the reliability block diagram, a rotor fault tree is constructed, and fault description, cause analysis, and qualitative analysis are carried out on the fault tree. On the basis of the fault tree, failure mode, effects, and criticality analysis (FMECA) is performed to obtain the rotor FMECA table. Through the FMECA table, risk analysis and criticality analysis are conducted to identify high-risk items, and suggestions for design and process improvements are proposed.
This study analyzes the failure mechanisms of the key rotor components of a high-speed permanent magnet generator, namely permanent magnets, sleeves, and backup bearings. For rotor permanent magnets, mechanical failure and magnetic performance failure are investigated, with emphasis on the magnetic failure mechanism un...
Zhao-Jun Cheng, Shan Li, Jiayu Zhang et al.· 2026 IEEE International Conf...· 0 citations
This paper presents an enhanced method for detecting broken rotor bar (BRB) faults in squirrel-cage induction motors (SCIMs), with a focus on low- and no-load conditions. The approach relies on harmonic analysis of stray magnetic flux and is benchmarked against conventional Motor Current Signature Analysis (MCSA). Faul...
A. Zorig, B. Babes, N. Hamouda et al.· Revue Roumaine des Sciences...· 0 citations
Rotor faults are a prevalent failure mode in induction motors. In the stator current of induction motors, the fault characteristic frequency component is in close spectral proximity to the fundamental component, yet possesses an extremely low amplitude. This makes it prone to being overwhelmed by the leakage of the fun...
Wenbiao Hu, Zhaorui Lv· International Conference on...· 0 citations
High-speed permanent magnet motors, due to their high speed, compact size, and light weight, are increasingly widely used in renewable energy systems, electric pump drives, fuel cell air compressors, and other fields. As a core component of high-speed permanent magnet motors, the reasonable design of the rotor system s...
Li Cao, Yan Hu, Jingshan Zhang et al.· Electronics· 0 citations
To address the need for monitoring of the operating condition of low-speed motor bearings, a novel noncontact magnetostrictive vibration sensor is developed. A dedicated bearing-vibration test platform is built to verify its performance and practical applicability. An Aner CH28 three-phase asynchronous motor is used to...
Mechanical faults in permanent magnet synchronous motor (PMSM)-driven systems can introduce disturbances and system interruptions leading to reduced performance and reliability. Effective fault diagnosis is essential for early fault detection and identification, which enables timely maintenance, reduced downtime, and e...
Konstantinos Koutrakos, Epameinondas Mitronikas, C. Michenthaler· IEEE Open Journal of Industr...· 0 citations
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