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Title: Numerical analysis of a brushless permanent magnet DC motor using coupled systems
Authors: HLA NU PHYU
Keywords: Brushless permanent magnet motors, Time stepping FEM, Coupled analysis, Numerical analysis, Permanent magnet motors, Spindle motor
Issue Date: 25-Aug-2005
Citation: HLA NU PHYU (2005-08-25). Numerical analysis of a brushless permanent magnet DC motor using coupled systems. ScholarBank@NUS Repository.
Abstract: This thesis deals with the modeling, simulation and performance analysis of a brushless permanent magnet DC motor (BLDC) using numerical methods. The primary objective is to develop efficient and practical procedures based on numerical techniques to analyze the steady state and dynamic performances of the BLDC motor. Dynamic model of the BLDC motor is developed using circuit-field coupled time stepping FEM. An improved steady state model is proposed using time stepping FEM combined with magneto-static FEM to reduce the computational expense using time stepping FEM alone. To analyze the motor with a controller as an actual system, a new approach to couple the time stepping FEM with closed loop control structure is implemented. Using this new scheme, application characteristics of the HDD spindle motor is investigated. In order to determine the accuracy and validation of the numerical models, DSP based BLDC motor test stand is developed and tested.
Appears in Collections:Ph.D Theses (Open)

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