Investigation Of Noise Generation In SRM And Method Of Reduction

Siti Nurul Husna, Ahmad Tajudin (2013) Investigation Of Noise Generation In SRM And Method Of Reduction. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Noise is displeasing to any mankind or any living things ever existed.Same with motor application, motor drive that produce noise excessively will cause damage to the motor itself. One of the examples of DC motor that greatly affected by this noise is Switch reluctance motor or known as SRM. Construction of SRM is simple witha salient pole stator having concentrated excitation windings and a salient pole rotor that have no conductors or permanent magnets, but SRM also are commonly reviewed by its main problem of vibration and noisethat are caused by the radial force and torque pulsation between stator and rotor which resulted in torque ripple. In view of that scenario, SRM is less popular due to that drawback. In this thesis, the main study is about the investigation of noise generation in SRM and methods of reduction that have been done on the relationship of construction, winding and flux with the emission of noise and vibrations. The effect of SRM geometry in noise generation have been analysed based on three main parameters that are the pole embrace, number of phase and air gap length. An analysis by using Maxwell 2-D of Finite Element Analysis (FEA) has been used throughout this thesis so that a precise result of noise torque production can be obtained. At the end of the thesis, an optimum design that present the best motor with the lowest torque ripple production have been proposed. The outline used to develop the design is general enough for further investigation by either evaluating other designs of its components or by extending its application to other problems.

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