An investigation into vibration in switched reluctance motors

Two disadvantages of the switched reluctance motor (SRM) are its torque ripple and acoustic noise. Previous work on vibration modes and resonant frequencies of the laminations of an 8-6 SRM is extended here to include the effects of the frame. Both a smooth frame and a ribbed frame are examined and the presence of numerous additional vibratory modes in the ribbed frame demonstrated. Accelerometer tests behind a pole verify some of the theoretical predictions.

[1]  Jeffrey H. Lang,et al.  The origin and reduction of acoustic noise in doubly salient variable-reluctance motors , 1992 .

[2]  S. P. Verma,et al.  Resonance Frequencies of Electrical Macchine Stators Having Encased Construction, Part II: Numerical Results and Experimental Verification , 1973 .

[3]  C. Y. Wu,et al.  Time domain analysis of vibration and acoustic noise in the switched reluctance drive , 1993 .

[4]  A. Michaelides,et al.  Reduction of noise and vibration in switched reluctance motors: new aspects , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

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

[6]  R. Blevins,et al.  Formulas for natural frequency and mode shape , 1984 .

[7]  S. P. Verma,et al.  Experimental verification of resonant frequencies and vibration behaviour of stators of electrical machines. Part 1: Models, experimental procedure and apparatus , 1981 .

[8]  R. S. Girgis,et al.  Method for accurate determination of resonant frequencies and vibration behaviour of stators of electrical machines , 1981 .

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

[10]  P. Pillay,et al.  A chopper-controlled SRM drive for reduced acoustic noise and improved ride-through capability using super capacitors , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[11]  S. P. Verma,et al.  Experimental verification of resonant frequencies and vibration behaviour of stators of electrical machines. Part 2: Experimental investigations and results , 1981 .

[12]  S. P. Verma,et al.  Resonance Frequencies of Electrical Machine Stators Having Encased Construction, Part I: Derivatiion of the General Frequency Equation , 1973 .

[13]  A. V. Radun,et al.  Design considerations for the switched reluctance motor , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[14]  R. S. Colby,et al.  Vibration modes and acoustic noise in a 4-phase switched reluctance motor , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[15]  Yifan Tang.  Characterization, numerical analysis and design of switched reluctance motor for improved material productivity and reduced noise , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[16]  Jeffrey Mahn,et al.  A systematic approach toward studying noise and vibration in switched reluctance machines: preliminary results , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.