ROTOR AND DESIGN METHOD THEREOF
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United States of America Patent
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Issued Date -
Nov 30, 2023
app pub date -
Sep 26, 2022
filing date -
May 26, 2022
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Abstract
A motor rotor is provided, comprising: a rotor core, comprising a plurality of metal parts and an inner hole of the rotor, the inner hole of the rotor passing through the rotor core, and the metal parts constituting a rotor metal total area ΣAmetal; and a plurality of reluctance parts, disposed surrounding the inner hole of the rotor, each of the reluctance parts comprising at least one flux barrier, at least one of the flux barriers penetrating the rotor core, and the at least one of the flux barriers in each of the reluctance parts constituting a flux barrier total area ΣAair; wherein, the sum of ΣAair and ΣAmetal being a rotor effective total area, and the ratio of ΣAair to the rotor effective total area being a flux barrier ratio KA, expressed as KA=ΣAair/ΣAair+ΣAmetal, and the flux barrier ratio KA satisfying the following relation: 0.25≤KA≤0.5.
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