Vibration analysis for switched reluctance motor system based on finite element and FFT

Vibration is a major problem of switched reluctance motor drive system, which can cause undesirable acoustic noise. Acoustic noise is severe when the periodic excitation of the machine normal force excites a natural vibration mode of the stack. So, it is very important for making the periodic excitation frequency to avoid the natural vibration frequency of the stator. In this paper, the electromagnetic radial force and vibration modes are calculated respectively for obtaining the periodic excitation and natural frequencies of stator with windings based on 3D finite element. FFT is used to analyse the dynamic vibration response of the switched reluctance motor drive system excited by the radial force under the environment of SIMULINK. In the end, a prototype motor is built and the numerical analysis is applied to a four phase 8/6 poles switched reluctance motor. An experimental validation of an operation machine is presented.

[1]  Pragasen Pillay,et al.  Resonant frequencies and mode shapes of switched reluctance motors , 2001 .

[2]  Pragasen Pillay,et al.  Resonance frequencies and mode shapes of switched reluctance motors , 1999, IEEE International Electric Machines and Drives Conference. IEMDC'99. Proceedings (Cat. No.99EX272).

[3]  Chi-Yao Wu,et al.  Analysis and Reduction of Vibration and Acoustic Noise in the Switched Reluctance Drive , 1995, IEEE Transactions on Industry Applications.

[4]  P. Pillay,et al.  Prediction of electromagnetic forces and vibrations in SRMs operating at steady state and transient speeds , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[5]  Pragasen Pillay,et al.  Impact of stator windings and end-bells on resonant frequencies and mode shapes of switched reluctance motors , 2002 .

[6]  Iqbal Husain,et al.  Modeling, Simulation, and control of switched reluctance motor drives , 2005, IEEE Transactions on Industrial Electronics.

[7]  R. S. Colby,et al.  Vibration modes and acoustic noise in a four-phase switched reluctance motor , 1995 .

[8]  R. Krishnan,et al.  Switched reluctance motor drives : modeling, simulation, analysis, design, and applications , 2001 .

[9]  I. Husain,et al.  Modeling, simulation and control of switched reluctance motor drives , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[10]  W. Cai,et al.  Analytical formulae for calculating SRM modal frequencies for reduced vibration and acoustic noise design , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[11]  Jiang Quan.  ANALYTICAL CALCULATING OF NATURAL FREQUENCIES OF STATORS OF SWITCHED RELUCTANCE MOTOR BASED ON ELECTROMECHANICAL ANALOGY METHOD , 2005 .