Stator having three-line connection structure, BLDC motor using same, and driving method therefor
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United States of America Patent
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Jul 18, 2017
Issued Date -
N/A
app pub date -
Mar 29, 2013
filing date -
Mar 30, 2012
priority date (Note) -
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Abstract
Provided are a stator having a three-coil wiring structure, a BLDC motor using the same, and a driving method thereof, in which coils are wound by using a three-coil wiring method, to thus minimize a ratio between slots and poles, and to thereby reduce cogging noise, and a gap between cores is set small, to thus increase an effective area between a magnet and a core and to thereby reduce leakage magnetic flux. The BLDC motor includes: a stator having a plurality of split cores that are disposed between an inner rotor and an outer rotor, and on which coils of three phases are connected and wound in a three-phase drive method, in which the plurality of split cores include a number of core groups in which the coils of the respective phases are wound on three consecutive split cores in sequence of a forward direction, a reverse direction, and a forward direction, and the three consecutive split cores generate magnetic flux in opposite directions to each other.
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