Method for fabricating a split-loop armature coil for a motor

Details Method for fabricating a split-loop armature coil for a motor Method for fabricating a split-loop armature coil for a motor

1995-07-26

1998-03-03

Schwartz, Larry I.

Metal working

Method of mechanical manufacture

Electrical device making

H02K 1502

Patent

active

057221537

ABSTRACT:
A particular coil configuration for an armature coil for a motor is disclosed, wherein a single-turn armature coil is preferably comprised of eight individual parallel conductors electrically insulated from each other and arranged to have a rectangular cross-section, wherein the eight conductors are split into two groups of four conductors to form an air gap at the loop portion of the coil. This "split-loop" armature coil configuration provides a greater cooling surface area for the armature coils at a hot spot of the coil, thereby reducing the hot spot temperature and increasing the current capability of the machine. Moreover, the split-loop armature coil configuration avoids the problem of shorted turns between the individual conductors and thus increases the reliability of the machine.

REFERENCES:
patent: 565647 (1896-08-01), Armstrong
patent: 688317 (1901-12-01), Lamme

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