Title :
Evaluation of eddy current losses in axial flux permanent magnet (AFPM) machine with an ironless stator
Author :
Wang, R. ; Kamper, M.J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
Abstract :
This paper presents a hybrid method for the calculation of eddy current losses in axial flux permanent magnet (AFPM) machines with an ironless stator. The method combines two-dimensional (2-D) finite element (FE) field solutions with the closed-form formula for eddy current loss calculation. The computational limitations of using 2-D FE modeling are discussed and a multi-slice and multi-layer FE model is developed to account for three-dimensional (3-D) effects. Relevant tests at high frequencies are carried out to validate the method. It is shown that the proposed method can predict the eddy current losses of ironless stator AFPM machines with reasonable accuracy.
Keywords :
eddy current losses; finite element analysis; machine theory; magnetic flux; permanent magnet machines; stators; 2-D finite element field solutions; 3-D effects; 300 kW; axial flux PM machine; eddy current losses; finite element method; high frequency tests; ironless stator; multi-layer FE model; multi-slice FE model; permanent magnet machines; three-dimensional effects; two-dimensional finite element field solutions; Coils; Conductors; Eddy currents; Finite element methods; Frequency; Iron; Permanent magnets; Stators; Testing; Wires;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042724
