Diagnostically Oriented Experiments and Modelling of Switched Reluctance Motor Dynamic Eccentricity

Area of Science:

• Electrical Engineering
• Mechanical Engineering
• Reliability Engineering

Background:

• Switched reluctance motors (SRMs) are increasingly used in demanding applications.
• Understanding motor behavior under fault conditions is crucial for reliability.
• Dynamic eccentricity is a common mechanical fault in rotating machinery.

Purpose of the Study:

• To compare experimental and modeling results for SRMs under normal and dynamic eccentricity fault conditions.
• To analyze the effect of dynamic eccentricity on SRM phase current.
• To validate mathematical models against experimental data.

Main Methods:

• Experimental testing of an SRM on a test bench.
• Mathematical modeling using quasi-static and dynamic analysis of a 2D geometry model.
• Phase current analysis in both time and frequency domains (Fast Fourier Transform - FFT).

Main Results:

• The study successfully compared experimental and modeling data for SRMs.
• Dynamic eccentricity significantly affects the phase current of the SRM.
• FFT analysis effectively identified fault-induced changes in the phase current.

Conclusions:

• The research provides a validated method for analyzing SRM faults.
• Findings can improve the maintenance and reliability of SRMs.
• Enhanced SRM reliability supports applications in special purpose vehicles, military, and industrial sectors.