Impact of punching on a small induction motor

This article deals with impact of punching processes on a small induction motor performance. Attempt to estimate shape of BH curve in areas damaged by punching is present here. To the estimation, simulations by the finite elements method together with laboratory measurement are used. The effect of punching is studied due to measurement of two samples of a small induction motors. First sample is a serial produced motor and second sample is the same motor except that sheets of its magnetic circuit were annealed after punching. The negative impact of punching can be eliminated by annealing. The results of both laboratory measurements and FEM simulations of the both motors are presented in this article.

[1]  Deepak Singh,et al.  Effect of Manufacturing on Stator Core Losses , 2013 .

[2]  Philip Beckley,et al.  Electrical Steels for Rotating Machines , 2002 .

[3]  Alexander C. Smith,et al.  Influence of manufacturing processes on iron losses , 1995 .

[4]  Andrea Cavagnino,et al.  Estimation of the Magnetic Properties of the Damaged Area Resulting From the Punching Process: Experimental Research and FEM Modeling , 2013, IEEE Transactions on Industry Applications.

[5]  Ion Boldea,et al.  The Induction Machine Handbook , 2001 .

[6]  R. Billardon,et al.  Effect of punching on electrical steels: Experimental and numerical coupled analysis , 2000 .

[7]  L. Ferraris,et al.  No tooling cost process for induction motors energy efficiency improvements , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[8]  Andrea Cavagnino,et al.  Effects of punch process on the magnetic and energetic properties of soft magnetic material , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[9]  A. Cavagnino,et al.  Analytical method for determining the damaged area width in magnetic materials due to punching process , 2011, IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society.

[10]  T. Nakata,et al.  Effects of stress due to cutting on magnetic characteristics of silicon steel. , 1991 .

[11]  L. Ferraris,et al.  Estimation of magnetic properties and damaged area width due to punching process: Modeling and experimental research , 2012, 2012 XXth International Conference on Electrical Machines.

[12]  A. Moses,et al.  Effect of mechanical and Nd:YAG laser cutting on magnetic flux distribution near the cut edge of non-oriented steels , 2005 .