Rotating electrical machine with winding segments with insulating film having removed part or thin part
A rotating electrical machine includes an armature that includes a multiphase armature winding. The multiphase armature winding includes winding segments. Each of the winding segments is comprised of a multiply-wound conductive wire member. The winding segments are arranged at predetermined intervals in a circumferential direction of the rotating electrical machine. Each of the winding segments has an end. The ends of the winding segments are collected at a predetermined connection point. The collected ends of the winding segments are connected to a neutral point or an input/output terminal of a power converter.
1. A rotating electrical machine comprising
an armature that includes a multiphase armature winding comprising a plurality of winding segments arranged at predetermined intervals in a circumferential direction of the rotating electrical machine,
each of the winding segments being comprised of a multiply-wound conductive wire member and having an end that has opposing first and second sides in a predetermined perpendicular direction, which is perpendicular to both an alignment direction of the ends of the winding segments and an extending direction of the corresponding one of the conductive wire members, and
the ends of the winding segments being collected at a predetermined connection point, which is a neutral point or an input/output terminal of a power converter, and aligned in one row or two rows, wherein:
the conductive wire member of each of the winding segments comprises:
a bundle of a plurality of wires; and
an insulating film that covers the bundle of the plurality of wires;
each of the winding segments has one of a first configuration and a second configuration,
the first configuration being that a part of the corresponding one of the insulating films for covering at least one of the first side and the second side of the end of the corresponding one of the winding segments has been eliminated therefrom, and
the second configuration being that a part of the corresponding one of the insulating films for covering at least one of the first side and the second side of the end of the corresponding one of the winding segments is thinner than other parts of the corresponding one of the insulating films; and
the at least one of the first side and the second side of the end of each of the winding segments is connected to the neutral point or the input/output terminal of the power converter directly or through the thinner part of the corresponding one of the insulating films.
2. The rotating electrical machine according to claim 1 , wherein:
the conductive wire member of each of the winding segments has a quadrangular shape in a transverse cross section thereof;
the first side or the second side of the end of each of the winding segments is configured as a flat side;
the ends of the winding segments are aligned while the flat sides of the respective ends of the winding segments are aligned;
the first configuration is that the part of the corresponding one of the insulating films for covering the flat side of the end of the corresponding one of the winding segments has been eliminated therefrom;
the second configuration is that the part of the corresponding one of the insulating films that covers the flat side of the end of the corresponding one of the winding segments is thinner than other parts of the corresponding one of the insulating films; and
the flat side of the end of each of the winding segments is connected to the neutral point or the input/output terminal of the power converter directly or through the thinner part of the corresponding one of the insulating films.
3. The rotating electrical machine according to claim 1 , wherein:
the part of each of the insulating films for covering the at least one of the first side and the second side of the end of the corresponding one of the winding segments has been eliminated therefrom, so that the conductors of the respective wires included in the bundle are exposed to be connected to one another.
4. The rotating electrical machine according to claim 1 , further comprising:
a wire member retainer arranged to restrain the first and second sides of the aligned ends of the winding segments to thereby retain the aligned ends of the winding segments.
5. The rotating electrical machine according to claim 4 , wherein:
the conductive wire member of each of the winding segments has a quadrangular shape in a transverse cross section thereof;
the first side or the second side of the end of each of the winding segments is configured as a flat side;
the ends of the winding segments are aligned while the flat sides of the respective ends of the winding segments are aligned;
the first configuration is that the part of the corresponding one of the insulating films for covering the flat side of the end of the corresponding one of the winding segments has been eliminated therefrom;
the second configuration is that the part of the corresponding one of the insulating films that covers the flat side of the end of the corresponding one of the winding segments is thinner than other parts of the corresponding one of the insulating films; and
the flat side of the end of each of the winding segments is connected to the neutral point or the input/output terminal of the power converter directly or through the thinner part of the corresponding one of the insulating films.
6. The rotating electrical machine according to claim 4 , wherein:
the part of each of the insulating films for covering the at least one of the first side and the second side of the end of the corresponding one of the winding segments has been eliminated therefrom, so that the conductors of the respective wires included in the bundle are exposed to be connected to one another.
7. The rotating electrical machine according to claim 1 , wherein:
each of the wires comprises a current-flowable conductor and a fusion layer that covers the conductor;
each of the insulating film and the fusion layer has a thickness;
the thickness of the fusion layer is thinner than the thickness of the insulating film; and
the fusion layer of each wire included in the bundle fuses to the fusion layers of other wires included in the bundle, the other wires being adjacent to the corresponding wire.
8. The rotating electrical machine according to claim 7 , further comprising:
a wire member retainer arranged to restrain the first and second sides of the aligned ends of the winding segments to thereby retain the aligned ends of the winding segments.
9. The rotating electrical machine according to claim 7 , wherein:
the conductive wire member of each of the winding segments has a quadrangular shape in a transverse cross section thereof;
the first side or the second side of the end of each of the winding segments is configured as a flat side;
the ends of the winding segments are aligned while the flat sides of the respective ends of the winding segments are aligned;
the first configuration is that the part of the corresponding one of the insulating films for covering the flat side of the end of the corresponding one of the winding segments has been eliminated therefrom;
the second configuration is that the part of the corresponding one of the insulating films that covers the flat side of the end of the corresponding one of the winding segments is thinner than other parts of the corresponding one of the insulating films; and
the flat side of the end of each of the winding segments is connected to the neutral point or the input/output terminal of the power converter directly or through the thinner part of the corresponding one of the insulating films.
10. The rotating electrical machine according to claim 7 , wherein:
the part of each of the insulating films for covering the at least one of the first side and the second side of the end of the corresponding one of the winding segments has been eliminated therefrom, so that the conductors of the respective wires included in the bundle are exposed to be connected to one another.