ELECTRIC MOTOR WITH INSULATED PERMANENT MAGNET
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United States of America
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Issued Date -
Mar 20, 2025
app pub date -
Sep 14, 2023
filing date -
Sep 14, 2023
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Abstract
A method of manufacturing a rotor for an electric motor comprises: positioning a permanent magnet within a magnet hole formed in a rotor body, the rotor body and the permanent magnet to form a rotor for an electric motor; providing an electrically insulating layer between the permanent magnet and a surface of the rotor body, the surface at least partially defines the magnet hole; performing an electrical continuity test on the permanent magnet and the rotor body while the permanent magnet is within the magnet hole and the electrically insulating layer is between the permanent magnet and the surface of the rotor body; determining whether the electrically insulating layer provides at least a threshold electric insulation to prevent of eddy currents circulating; and based on the electrically insulating layer providing at least the threshold electric insulation, approving the rotor for the electric motor.
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