Using parameters of the external magnetic field for diagnosing faults in automotive alternator

The rationale of the problem being investigated is driven by the lack of informativeness and significant complexity of the existing methods of diagnosis of automotive alternators. The method leading to the investigation of this problem is evaluation of external magnetic field parameters, which gives an opportunity to detect electrical faults of an automotive alternator. It was established that the magnitude of the external magnetic field measured by the Hall sensor is sensitive to the technical condition of the generator. By analyzing the distribution of the axial component of the external magnetic field, the optimal point on the surface of the generator is selected, which ensures the uniqueness of the diagnostic parameter. An algorithm for recognizing electrical faults based on the magnitude of an external magnetic field is developed. Information in this paper may be used for further development and implementation of the proposed method of diagnosis of automotive alternators.