Title :
Accurate computation of electromagnetic forces in switched reluctance motors
Author :
Cai, W. ; Pillay, P. ; Reichert, K.
Author_Institution :
Delco Remy America, Inc., Anderson, IN, USA
Abstract :
The theory and practice of electromagnetic force calculations are briefly summarized. Different factors causing numerical errors of magnetic forces are systemically analyzed, and the methods to avoid those errors in Maxwell´s stress tensor method are discussed. It is suggested that three layers of finite elements in the air-gap of electrical machines, instead of two element layers used by many magnetic experts, be used for accurate computations. An example of the force computation and torque test of the SRM is presented to validate the theoretical analysis in the paper
Keywords :
air gaps; electromagnetic forces; finite element analysis; machine theory; reluctance motors; Maxwell´s stress tensor method; air-gap; electromagnetic forces; force computation; magnetic experts; magnetic forces; numerical errors; switched reluctance motors; torque test; two element layers; Electromagnetic forces; Finite element methods; Magnetic analysis; Magnetic forces; Reluctance machines; Reluctance motors; Stators; Stress; Testing; Torque;
Conference_Titel :
Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
7-5062-5115-9
DOI :
10.1109/ICEMS.2001.971862
