Temperature Rise Analysis of Switched Reluctance Motors Due to Electromagnetic Losses

We present a finite-element analysis of the temperature rise of switched reluctance motors (SRM) due to electromagnetic losses. We estimate the various components of electromagnetic losses, including core loss in the lamination as well as copper and eddy-current losses in windings, and then predict the temperature rise within the motor due to these losses. We present simulation results for an 8/6 SRM and discuss various aspects of thermal design of SRMs. To validate the procedure for the estimation of electromagnetic losses, we compare predicted and measured losses.

[1]  A. Cavagnino,et al.  Convection Heat Transfer and Flow Calculations Suitable for Analytical Modelling of Electric Machines , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[2]  Jawad Faiz,et al.  Heat distribution and thermal calculations for switched reluctance motors , 1991 .

[3]  M. Markovic,et al.  Determination of the Thermal Convection Coefficient for a Small Electric Motor , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[4]  G. Jewell,et al.  Prediction and measurement of core losses in a high-speed switched-reluctance Machine , 2005, IEEE Transactions on Magnetics.

[5]  P. Lagonotte,et al.  Coupling control volume modeling in fluid and lumped thermal model - Application to an induction machine , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[6]  Andrea Cavagnino,et al.  Solving the more difficult aspects of electric motor thermal analysis in small and medium size industrial induction motors , 2005 .

[7]  Jawad Faiz,et al.  Lumped thermal model for switched reluctance motor applied to mechanical design optimization , 2007, Math. Comput. Model..

[8]  W. Wu,et al.  Design optimization of switched reluctance motor by electromagnetic and thermal finite element analysis , 2003, Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401).

[9]  R. Krishnan,et al.  Estimation of switched reluctance motor losses , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[10]  Koichiro Sawa,et al.  A temperature rise analysis of switched reluctance motor due to the core and copper loss by FEM , 2003 .

[11]  Jawad Faiz,et al.  Core losses estimation in a multiple teeth per stator pole switched reluctance motor , 1994 .

[12]  Rik W. De Doncker,et al.  Eddy currents in windings of switched reluctance machines , 2008 .

[13]  K. N. Srinivas,et al.  Analysis and characterization of switched reluctance motors , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[14]  A. Abdel-azim.  Fundamentals of Heat and Mass Transfer , 2011 .

[15]  Pragasen Pillay,et al.  THERMAL MODEL FOR A SWITCHED RELUCTANCE MOTOR OF TEFC DESIGN DURING STEADY AND TRANSIENT OPERATION , 1998 .

[16]  Jawad Faiz,et al.  Loss prediction in switched reluctance motors using finite element method , 2009 .

[17]  A. Radun,et al.  Modeling of losses in switched reluctance machines , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..