@article { author = {Hassanzadeh, M. R. and Kiyoumarsi, A. and Moallem, M.}, title = {A Novel Technique on the Analytical Calculation of Open-Circuit Flux Density Distribution in Brushless Permanent-Magnet Motor}, journal = {International Journal of Engineering}, volume = {17}, number = {1}, pages = {51-58}, year = {2004}, publisher = {Materials and Energy Research Center}, issn = {1025-2495}, eissn = {1735-9244}, doi = {}, abstract = {Both the cogging and electromagnetic torques depends on the shape of the flux density distribution in the airgap region. A two-dimensional (2-D) analytical method for predicting the open- circuit airgap field distribution in brushless permanent magnet motors, considering the direction of magnetization, i.e., radial or parallel, and the effect of real shape of stator slot-openings is presented in this paper. It involves the solution of the governing field equations in polar coordinates in airgap and magnet regions. This method uses a new 2-D relative permeance function. For the comparison purposes, a 2-D finite element (FE) analysis is used for the analysis of a fully-pitched, double-layer windings brushless permanent-magnet (PM) drive. The results obtained by this method are very close to those obtained by FE analysis especially at the corner tips of the tooth.}, keywords = {Brushless Permanent Magnet Motor,analytical method,Finite element method}, url = {https://www.ije.ir/article_71493.html}, eprint = {https://www.ije.ir/article_71493_0c2491a930aeb10c749caa5c98c7b8c4.pdf} }