A Review of Modeling and Diagnostic Techniques for Eccentricity Fault in Electric Machines

Research on the modeling and fault diagnosis of rotor eccentricities has been conducted during past two decades. A variety diagnostic theories methods have proposed based different mechanisms, there are reviews following either one type electric machines or eccentricity. Nonetheless, research routes common, regardless machine eccentricity types. This article tends to review all possible approaches for common types with provide suggestions future roadmap. The paper indicates that a reliable low-cost non-intrusive real-time online visualized method is trend. Observer-based strategies thought promising continued research.