Young Researcher Paper Award 2021

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Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Analysis of Stator Material for Eliminating Cogging Torque

Ming-Jen Huang and Chia-Hung Lin

(Received March 29, 2022; Accepted June 21, 2022)

Keywords: cogging torque, nano Fe3O4 powder, hysteresis loop, permanent magnet brushless motor

Eliminating or reducing cogging torque has been the most important issue in the development of permanent magnet brushless motors. Because of the structure of the motor, the stator is traditionally made of a silicon steel plate with a copper wire winding, while the rotor silicon steel plate is clamped with a permanent magnet. Usually, when the power is off, the relative motion of the stator's silicon steel plate and the rotor's magnet produces cogging torque. This phenomenon affects the motor's smooth rotation and shorten the motor's life. In this paper, based on the book TRIZ by the Soviet inventor Altshuller, we analyze the effect of the matter field on components or subsystems of interest, such as the components requiring improvement or with the lowest functional value in the system, or when a quick and simple model is required to provide a designer with a different direction of thinking. Thus, it is unnecessary to use a set tool; any tool may be helpful for generating a good idea. We propose that the silicon steel plate of the motor is replaced with nano Fe3O4 powder.

Corresponding author: Chia-Hung Lin

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