Electric motor with different star points
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United States of America Patent
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Jul 23, 2024
Grant Date -
Oct 7, 2021
app pub date -
Jun 17, 2021
filing date -
Dec 20, 2018
priority date (Note) -
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Abstract
An electric motor includes: a rotor with a first number of permanent magnets, wherein each permanent magnet encompasses a first circular sector; a stator with a second number of pole feet, wherein a first group of coils is electrically connected via a first star point, wherein a second group of coils is electrically connected via a second star point to be conductive, wherein the second star point is electrically insulated from the first star point, wherein a coil of the first group of coils is arranged between two coils of the second group of coils; and a controller for applying drive signals to the first group of coils so as to provide the rotor with a torque with respect to the stator, and for applying a control signal that differs from the drive signals to at least one coil of the second group of coils.
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