TY - JOUR ID - 71493 TI - A Novel Technique on the Analytical Calculation of Open-Circuit Flux Density Distribution in Brushless Permanent-Magnet Motor JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Hassanzadeh, M. R. AU - Kiyoumarsi, A. AU - Moallem, M. AD - Electerical Engineering, Isfahan University of Technology AD - Electerical and Computer Engineering, Isfahan University of Technology Y1 - 2004 PY - 2004 VL - 17 IS - 1 SP - 51 EP - 58 KW - Brushless Permanent Magnet Motor KW - analytical method KW - Finite element method DO - N2 - 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. UR - https://www.ije.ir/article_71493.html L1 - https://www.ije.ir/article_71493_0c2491a930aeb10c749caa5c98c7b8c4.pdf ER -