Electromechanical Evaluation of a Double-Core Motor With Ceramic Elements

Oleksandr Dobzhanskyi; Rupert Gouws; Kevin Bennion; Bidzina Kekelia; J. Tomerlin; E. Cousineau; Sreekant Narumanchi

doi:10.1109/ACCESS.2022.3231740

Electromechanical Evaluation of a Double-Core Motor With Ceramic Elements

Oleksandr Dobzhanskyi, Rupert Gouws, Kevin Bennion, Bidzina Kekelia, J. Tomerlin, E. Cousineau, Sreekant Narumanchi

Center for Integrated Mobility Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

This study investigated the prospect of embedding ceramic elements in the body of a double-core transverse-flux machine to mitigate heat in the machine's coil. In addition, the ceramic elements were used to hold the coil above the permanent magnets in order to reduce the negative flux leakage of the magnets into the coil. Three types of ceramics were investigated for this purpose: glass ceramic, aluminum oxide, and silicon nitride. Steady-state thermal analysis demonstrated a significant temperature drop in the motor coil when the ceramic element was embedded in the design. The back electromotive force of the winding improved by 30% as a result of reduced leakage flux. Structural analysis of the motor demonstrated high endurance of the ceramic elements to thermal stress and motor vibration. The results of computer thermal analysis were verified in the laboratory by performing a test on a section of a motor.

Original language	American English
Pages (from-to)	133698-133707
Number of pages	10
Journal	IEEE Access
Volume	10
DOIs	https://doi.org/10.1109/ACCESS.2022.3231740 https://doi.org/10.1109/ACCESS.2022.3231740
State	Published - 2022

Bibliographical note

Publisher Copyright:
© 2013 IEEE.

NREL Publication Number

NREL/JA-5400-83669

Keywords

Ceramic element
thermal stress
transverse-flux motor
vibration analysis

Access to Document

https://www.nrel.gov/docs/fy23osti/83669.pdf

Cite this

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title = "Electromechanical Evaluation of a Double-Core Motor With Ceramic Elements",

abstract = "This study investigated the prospect of embedding ceramic elements in the body of a double-core transverse-flux machine to mitigate heat in the machine's coil. In addition, the ceramic elements were used to hold the coil above the permanent magnets in order to reduce the negative flux leakage of the magnets into the coil. Three types of ceramics were investigated for this purpose: glass ceramic, aluminum oxide, and silicon nitride. Steady-state thermal analysis demonstrated a significant temperature drop in the motor coil when the ceramic element was embedded in the design. The back electromotive force of the winding improved by 30% as a result of reduced leakage flux. Structural analysis of the motor demonstrated high endurance of the ceramic elements to thermal stress and motor vibration. The results of computer thermal analysis were verified in the laboratory by performing a test on a section of a motor.",

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AU - Dobzhanskyi, Oleksandr

AU - Gouws, Rupert

AU - Bennion, Kevin

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AU - Tomerlin, J.

AU - Cousineau, E.

AU - Narumanchi, Sreekant

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AB - This study investigated the prospect of embedding ceramic elements in the body of a double-core transverse-flux machine to mitigate heat in the machine's coil. In addition, the ceramic elements were used to hold the coil above the permanent magnets in order to reduce the negative flux leakage of the magnets into the coil. Three types of ceramics were investigated for this purpose: glass ceramic, aluminum oxide, and silicon nitride. Steady-state thermal analysis demonstrated a significant temperature drop in the motor coil when the ceramic element was embedded in the design. The back electromotive force of the winding improved by 30% as a result of reduced leakage flux. Structural analysis of the motor demonstrated high endurance of the ceramic elements to thermal stress and motor vibration. The results of computer thermal analysis were verified in the laboratory by performing a test on a section of a motor.

KW - Ceramic element

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KW - vibration analysis

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Electromechanical Evaluation of a Double-Core Motor With Ceramic Elements

Abstract

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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