FIELD: electrical engineering; three-phase multispeed motors.
SUBSTANCE: proposed pole-change three-phase winding where coil number alternation in groups is 1, 1, 4, 1, 1, 4 ... has its phase winding connected to coil groups numbered 6i - 5, 6i 3, 6i - 1, 6i + 4, 6i - 6, 6i = 8; finishing lead of group 6i - 5 is connected to starting lead of group 6i - 1; finishing lead of 6i - 1, to finishing lead of 6i + 4; staring lead of 6i + 4, to finishing lead of 6i + 8; starting lead of 6i + 8, to finishing lead of 5i - 3; phase leads are brought out from starting leads of 6i - 5, 6i - 3, 6i + 3, 6i + 6; finishing leads of coil groups 6i + 6 are interconnected in neutral point; novelty is that starting lead of coil group 6i + 6 is not connected to starting lead of group 6i + 8 and to finishing lead of 6i - 3 and that phase leads are brought out from starting leads of group 6i + 8, where i = 1, 2, 3.
EFFECT: enhanced use factor of induction motor size at minimal pole number.
1 cl, 5 dwg
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SU1001340A1 |
