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- Title
Investigation of Stator Windings Looseness of Polyphase Induction Machine after Rewinding in Workshop: Numerical and Experimental Analysis.
- Authors
Ram Prasad, K. V. Sri; Singh, V.
- Abstract
Electric machines, particularly induction motors, are widely used in industry as they are robust in construction and require less maintenance. These machines are continuously operated under high loading conditions, which may result in machine vibrations. The Experimental-Modal-Analysis (EMA) technique is employed in this research to determine electrical machine vibrations. The hammer test is a popular EMA approach for locating the exact location of winding looseness. EMA test is executed on the stator winding to extract the modal parameters to find exact deformation in machine windings. Mathematical calculations and a numerical model are developed to validate the experimental data. The EMA’s Operational Deformation Structure (ODS) validates the winding’s looseness precisely. Two test machines’ MA and MB windings are tested with EMA to evaluate the stator slot structure’s looseness. Finally, the proposed technique is compared with the finite element technique along with mathematical calculations for verification.
- Subjects
NUMERICAL analysis; VIBRATION (Mechanics); STATORS; ELECTRIC machines; NUMERICAL calculations; WINDING machines; INDUCTION machinery; INDUCTION motors
- Publication
Majlesi Journal of Electrical Engineering, 2022, Vol 16, Issue 4, p13
- ISSN
2345-377X
- Publication type
Article
- DOI
10.30486/mjee.2022.696514