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Abstract-Flux-switching permanent-magnet (FSPM) motors are been studied as a promising candidate for many industrial applications, but they suffer from vibration and acoustic noise of electromagnetic origins. This paper proposes a new five-phase fault-tolerant FSPM motor in order to reduce vibration and acoustic noise, which has double fault-tolerant teeth on stator. By cutting down the lowest harmonic...
This paper proposes a differential evolution (DE) optimization-based current profiling method for simultaneous reduction of the torque ripple and vibration of switched reluctance motors (SRMs). The mechanism of torque generation in SRMs produces radial forces in addition to the required tangential force. It has been shown that the radial forces acting on the stator are the main vibration source in...
The aim of this paper is to study the saturation effect on the electromagnetic and acoustic behavior of Switched Reluctance Machines (SRMs). Two 4-phase SRMs (8/6 and 16/12) are analyzed through numerical models under the hypothesis of linear and nonlinear magnetic material characteristics. The harmonic content of the radial Maxwell pressure and the radiated acoustic power are compared in both qualitative...
The paper discusses the advanced spectral analysis performed on two important classes of electric drive systems, namely Switched Reluctance Motors (SRM) and Permanent Magnet Synchronous Machines (PMSM). In particular, the noise and vibration signatures as a function of operating speed are analyzed by using a waterfall analysis and an order analysis. The harmonic and modulation components attributable...
The switched reluctance motor is a good candidate for electrical traction and more specifically in automotive applications. The conventional switched reluctance motor presents two major drawbacks which are torque ripple and stator vibrations. In this work, a solution to limit these problems is proposed: a switched reluctance motor with magnetic slot wedges is used to reduce the impact of vibrations...
Acoustic noise in the linear switched reluctance motor (LSRM) is caused primarily by the deformation of the stator lamination stack. Acoustic noise is most severe when the periodic excitation of the LSRM phases excites a natural vibration mode of the stack. Noise and vibration are usually high in LSRM because of doubly salient structures. The natural vibration modes and frequencies of a three-phase...
Radial magnetic force acts on the motor stator cause large vibration and acoustic noise, that have limit the application of switched reluctance motors (SRMs). They can be aggravated when there is unbalanced force due to rotor eccentricity. This paper analyzed the function of bearingless technique in compensating the unbalanced magnetic attraction force; Then the stator radial force mathematic model...
Predicting the vibration of the switched reluctance motor (SRM) is the key to design low vibration motor. In this paper, a comprehensive study of SRM vibration prediction from low frequency to high frequency is presented. For the low frequency vibration, the prediction model based on transfer function is proposed. The transfer function is calculated using modal analysis and mechanical harmonic analysis...
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