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This paper describes design modifications of a brushed permanent magnet DC motor. Test motor is modeled using a Finite Element Method (FEM) based software. Model accuracy is investigated by comparing measurement and simulation results. Reducing material consumption in motor fabrication while the motor develops the desired torque at a higher efficiency is aimed in this paper. Modifications are done...
This paper deals with the design process of brushless dc (BLDC) motor considering with the magnetization process included the skewed magnetizing fixture. The optimal design is also conducted to compensate the reduced back-EMF due to the skewed PM. The BLDC motor is designed by the loading distribution method and the skewed PM is analyzed 3D FEM. In addition, to reduce the simulation time of 3D FEM,...
We present an analytical method to study magnetic fields in permanent-magnet brushless motors, taking into consideration the effect of stator slotting. Our attention concentrates particularly on the instantaneous field distribution in the slot regions where the magnet pole transition passes over the slot opening. The accuracy in the flux density vector distribution in such regions plays a critical...
In this paper, the method with different pole arc combination was adopted to reduce the cogging torque in PMDC motors. To minimize the cogging torque, a global optimization algorithm (zooming algorithm) and the finite element method (FEM) are combined to find the best pole arc combination. The Fourier coefficient of the square of magnetic flux density is analyzed to determine the feasible region from...
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