US 7,009,320 B2Granted

Stator of electric rotating machine

AssigneeMitsubishi Denki Kabushiki Kaisha

InventorsHiroyuki Akita, Yoshito Asao, Haruyuki Kometani

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Abstract

A stator of a wire connection structure is capable of producing an unlimited number of non-integer turns. This stator is made by turning back first to sixth conductors on the outside of an end face of a stator iron core, and by mounting them in slots at a predetermined slot pitch in each of U, V and W phases. The sixth conductor is divided into two 0.5 turns coils. Connecting in parallel 1.5 turns of each coil, in which the second conductor and a first of the coils are connected, and 1.5 turns of a coil in which the fourth conductor and a second of the coils are connected, forms a 1.5 turns coil. Connecting in series the 1.5 turns coil, and 3 turns of a coil formed by connecting in series the first conductor, the third conductor, and the fifth conductor forms a 4.5 turns coil.

Claims7

Dependent claims

A stator of an electric rotating machine comprising:

a stator iron core having a plurality of slots that extend in an axial direction of an annular member of laminated thin steel plates and that are disposed at a determined pitch circumferentially;
and
coils forming a U-phase, a V-phase and a W-phase, wherein
each of a U-phase, a V-phase, and a W-phase coil is formed by turning back n conductors on an outside of an end face of said stator iron core, and mounting said conductors in said slots at a predetermined slot pitch,
the number of slots in each of said U-phase, V-phase, and W-phase is S, and, in each of said U-phase, V-phase, and W-phase, plural sets of m conductors are selected out of (S·n) conductors in all of the slots and are connected in parallel, thereby forming a non-integer m/S turns coil and
a non-integer number of turns coil is formed by combining said non-integer m/S turns coil with integer number of turns coils composed of said conductors that are not selected.

3 more elements

Dependencies are inferred from the claim text.