Rotor assembly for an electric motor

Rotor assembly for an electric motor

A rotor assembly includes several permanent magnets (20, 22, 24, 26) separated by spacers (28). The permanent magnets and the spacers are all fabricated from material having the same coefficient of thermal expansion. The spacers are in a non-magnetized state and provide support for a sleeve (30) pla...

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Hauptverfasser: Rasmussen, Roy D, Legros, Craig R
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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creator Rasmussen, Roy D
Legros, Craig R
description A rotor assembly includes several permanent magnets (20, 22, 24, 26) separated by spacers (28). The permanent magnets and the spacers are all fabricated from material having the same coefficient of thermal expansion. The spacers are in a non-magnetized state and provide support for a sleeve (30) placed in a high interference fit with the permanent magnets. The sleeve is thereby fully supported about the inner circumference (32) such that uneven bending stresses are significantly reduced to provide a desired operational life.
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The permanent magnets and the spacers are all fabricated from material having the same coefficient of thermal expansion. The spacers are in a non-magnetized state and provide support for a sleeve (30) placed in a high interference fit with the permanent magnets. The sleeve is thereby fully supported about the inner circumference (32) such that uneven bending stresses are significantly reduced to provide a desired operational life.</abstract><oa>free_for_read</oa></addata></record>
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subjects CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
title Rotor assembly for an electric motor
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