Experimental investigation of the 3D vibrational behaviour of an induction machine

An experimental investigation regarding the structural behaviour of an operating induction machine has been carried out, focusing on an examination of the vibrational behaviour that results in noise radiation. Acceleration measurements have been performed, first on the stator core stack in azimuthal as well as axial direction, and then on the housing. Besides steady measurements for different supply frequencies also unsteady measurements have been recorded. The occurring oscillation modes of the stator have been evaluated and compared to the vibration of the housing.

[1]  Harmonic theory of noise in induction motors , 1940, Electrical Engineering.

[2]  S. Watanabe,et al.  Natural Frequencies and Vibration Behaviour of Motor Stators , 1983, IEEE Transactions on Power Apparatus and Systems.

[3]  Oszkar Biro,et al.  Computation of the noise radiation of an induction machine using 3D FEM/BEM , 2011 .

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

[5]  K. Bathe.  Finite Element Procedures , 1995 .

[6]  S. P. Verma,et al.  The effect of windings, frame and impregnation upon the resonant frequencies and vibrational behavior of an electrical machine stator , 1990 .

[7]  Kay Hameyer,et al.  Asymptotic Fourier decomposition of tooth forces in terms of convolved air gap field harmonics for noise diagnosis of electrical machines , 2009 .

[8]  Andrej Stermecki,et al.  Computation of Rotating Force Waves in Skewed Induction Machines Using Multi-Slice Models , 2011, IEEE Transactions on Magnetics.

[9]  S. P. Verma,et al.  Experimental investigations on the stators of electrical machines in relation to vibration and noise problems , 1997 .

[10]  Alan V. Oppenheim,et al.  Discrete-time Signal Processing. Vol.2 , 2001 .

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

[12]  E. Erdelyi,et al.  Predetermination of Sound Pressure Levels of Magnetic Noise of Polyphase Induction Motors [includes discussion] , 1955, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems.

[13]  Michael Möser,et al.  Structure-borne Sound , 2009 .

[14]  R. Girgis,et al.  Resonant Frequencies and Vibration Behaviour of Stators of Electrical Machines as Affected by Teeth, Windings, Frame and Laminations , 1979, IEEE Transactions on Power Apparatus and Systems.

[15]  Wayne J. Morrill.  Harmonic Theory of Noise in Induction Motors , 1940, Transactions of the American Institute of Electrical Engineers.