Acoustic Noise/Vibration Reduction of a Single-Phase SRM Using Skewed Stator and Rotor

This paper presents a single-phase switched reluctance motor (SRM) with skewed stator and rotor so that the acoustic noise and vibration have been significantly reduced. The motor has the same skew angle for both stator and rotor laminations. The main source of acoustic noise and vibration is the rapid change of radial magnetic force along the air gap between the stator and rotor poles. Since the radial force (RF) is most intensified on the stator yoke near the salient poles, the abrupt change of the RF can be mitigated by skewing the stator and/or rotor laminations. Therefore, the RF can be more distributed throughout the stator core, and in turn, the peak value of the RF is reduced. In this paper, the distribution of the RF with respect to the skew angles is analyzed through the finite-element method simulation to design a single-phase SRM with the significantly reduced vibration and noise. Based on the simulation results, prototype motors with three different skew angles (0°, 30°, and 64°) have been constructed and tested, validating that the proposed design is effective in mitigating acoustic noise and vibration.

[1]  C.Y. Wu,et al.  Analysis and reduction of vibration and acoustic noise in the switched reluctance drive , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[2]  Sayed Javad Mousavi,et al.  Acoustic Noise Reduction and Power Factor Correction in Switched Reluctance Motor Drives , 2011 .

[3]  M Moallem,et al.  Double-Stator Switched Reluctance Machines (DSSRM): Fundamentals and Magnetic Force Analysis , 2010, IEEE Transactions on Energy Conversion.

[4]  Chang-Ming Liaw,et al.  Comparative study of switching controls in vibration and acoustic noise reductions for switched reluctance motor , 2006 .

[5]  Juan Ramón Heredia-Larrubia,et al.  Reducing Acoustic Noise Radiated by Inverter-Fed Induction Motors Controlled by a New PWM Strategy , 2010, IEEE Transactions on Industrial Electronics.

[6]  Michel Hecquet,et al.  Characterization and Reduction of Audible Magnetic Noise Due to PWM Supply in Induction Machines , 2010, IEEE Transactions on Industrial Electronics.

[7]  Iqbal Husain,et al.  Radial force calculation and acoustic noise prediction in switched reluctance machines , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[8]  Jin-Woo Ahn,et al.  Hybrid excitation of SRM for reduction of vibration and acoustic noise , 2004, IEEE Transactions on Industrial Electronics.

[9]  A. Bardsley,et al.  Description-Level Optimisation of Synthesisable Asynchronous Circuits , 2010, 2010 13th Euromicro Conference on Digital System Design: Architectures, Methods and Tools.

[10]  Rik W. De Doncker,et al.  Calculation of the Acoustic Noise Spectrum of SRM Using Modal Superposition , 2010, IEEE Transactions on Industrial Electronics.

[11]  P.O. Rasmussen,et al.  Structural stator spacers-a solution for noise reduction of switched reluctance motors , 2004, IEEE Transactions on Industry Applications.

[12]  Jingjun Zhang,et al.  Radial force reduction for switched reluctance motor with skewed slot structure based on FEM , 2010 .

[13]  Morgan Kiani.  Active mitigation of vibration in switched reluctance motor drives , 2012, 2012 IEEE International Symposium on Industrial Electronics.

[14]  M. Divandari,et al.  Radial force and torque ripple optimization for acoustic noise reduction of SRM drives via fuzzy logic control , 2010, 2010 9th IEEE/IAS International Conference on Industry Applications - INDUSCON 2010.

[15]  Yongbin Li,et al.  Doubly Salient Permanent-Magnet Machine With Skewed Rotor and Six-State Commutating Mode , 2007 .

[16]  R. Deodhar,et al.  Vibration and noise in novel variable flux reluctance machine with DC-field coil in stator , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[17]  Chi-Yao Wu,et al.  Acoustic noise cancellation techniques for switched reluctance drives , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[18]  J.H. Lang,et al.  The origin of acoustic noise in variable-reluctance motors , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[19]  Minh-Khai Nguyen,et al.  Harmonic Intensity Reduction Technique for Single Phase Switched Reluctance Motor Drives Using a New Random PWM Scheme , 2010 .

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