Optimal design of a surface mounted permanent-magnet BLDC motor for spacecraft applications

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...

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Bibliographic Details
Main Authors: Praveen, R P, Ravichandran, M H, Achari, V T S, Raj, V P J, Madhu, G, Bindu, G R, Dubas, F
Format: Conference Proceeding
Language:English
Subjects:
Arrays
Brushless DC motor
cogging
Forging
Halbach
Magnetic cores
Magnetic flux
Rotors
slotless
slotted
space application
Stators
Torque
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Summary: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.
DOI:10.1109/ICETECT.2011.5760152