STATOR FOR ROTARY ELECTRIC MACHINE
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United States of America Patent
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Issued Date -
Mar 30, 2023
app pub date -
Mar 30, 2021
filing date -
Mar 30, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A stator for a rotary electric machine, including a stator core having a plurality of slots, and a multi-phase stator coil wound around the stator core by double-layer winding. The multi-phase stator coil is formed by winding a plurality of double-wound coils around an entire circumference of the stator core for each phase, each of the double-wound coils being wound concentrically with different circumferential lengths. Each of the double-wound coils is formed of a coil portion having a larger circumferential length and a coil portion having a smaller circumferential length. In one of the double-wound coils, a total number of coils inserted into the plurality of slots for the coil portion having the larger circumferential length and a total number of coils inserted into the plurality of slots for the coil portion having the smaller circumferential length are equal to each other.
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