A study on the reduction of vibration and acoustic noise for switched reluctance motor

A method for reducing the vibration and acoustic noise of switched reluctance motors is proposed. The dominant source of the vibration and acoustic noise is the rapid change of the radial force during commutation, and it is caused by a rapid change of current. When the excitation current is cut off, the radial force suddenly reduces to 0. If the change of current is slow, the vibration and acoustic noise can be reduced. When the current is gradually decreased from a proper angle before the aligned position, the change of current can be controlled. By using this method, it is possible to reduce the vibration and noise. Experimental results show the validity of the proposed method in this paper.

[1]  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.

[2]  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.

[3]  Jin-Woo Ahn,et al.  A three-phase switched reluctance motor with two-phase excitation , 1999 .

[4]  M. Sanada,et al.  Novel rotor pole design of switched reluctance motors to reduce the acoustic noise , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

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

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

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

[8]  R. Carlson,et al.  Finite elements coupled to electrical circuit equations in the simulation of switched reluctance drives: attention to mechanical behaviour , 1996 .