Jagathy Raj, V P; Praveen, R P; Ravichandran, M H; Sadasivan Achari, V T; Madhu, G; Bindu, G R; Dubas, F(IEEE, March 23, 2011)
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Abstract:
This paper presents the optimal design of a surface
mounted permanent-magnet (PM) Brushless direct-current
(BLDC) motor meant for spacecraft applications. The spacecraft
applications requires the choice of a motor with high torque
density, minimum cogging torque, better positional stability and
high torque to inertia ratio. Performance of two types of machine
configurations viz Slotted PMBLDC and Slotless PMBLDC with
Halbach array are compared with the help of analytical and
finite element (FE) methods. It is found that unlike a Slotted
PMBLDC motor, the Slotless type with Halbach array develops
zero cogging torque without reduction in the developed torque.
Moreover, the machine being coreless provides high torque to
inertia ratio and zero magnetic stiction
Description:
Emerging Trends in Electrical and Computer Technology (ICETECT), 2011 International Conference on