Title :
A Consideration of electric and magnetic networks for calculating eddy current loss in SPM motor
Author :
Yoshida, Yutaka ; Nakamura, Kentaro ; Ichinokura, Osamu
Author_Institution :
Grad. Sch. of Eng., Tohoku Univ., Sendai, Japan
Abstract :
This paper presents a method for calculating eddy current loss in permanent magnets of a surface permanent magnet (SPM) motor based on electric and magnetic networks. First, an electric network model to calculate the eddy current loss is indicated. Then, to find the resistivity of a Nd-Fe-B magnet, eddy current loss in the magnet is measured by using a test core. Next, a reluctance network analysis (RNA) model of the SPM motor considering the rotor rotation is presented. The eddy current losses in the magnet of the SPM motor from no load to full load conditions are calculated by the RNA model and electric network model. The proposed model can be taken into account the effect of carrier harmonics.
Keywords :
boron; eddy current losses; iron; neodymium; permanent magnet motors; Nd-Fe-B; RNA model; SPM motor; carrier harmonic effect; eddy current loss; electric network model; magnet resistivity; magnetic networks; reluctance network analysis model; rotor rotation; surface permanent magnet motor; Eddy currents; Reluctance network analysis (RNA); eddy current loss; surface permanent magnet (SPM) motor;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Print_ISBN :
978-1-4673-2327-7
