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公开(公告)号：US11569697B2
公开(公告)日：2023-01-31
申请号：US17073502
申请日：2020-10-19
Applicant: Mitsubishi Electric Corporation
Inventor： Naohiko Ayukawa , Tatsuro Hino , Kohei Egashira , Kazuya Hasegawa , Yasuhiro Hayasaka , Kenji Maekawa
Abstract: An annular stator core in which, out of slots arrayed in a circumferential direction and extending in a radial direction, q slots are formed per pole and per phase; and stator windings, for respective phases, attached to the stator core. For each stator winding, q*n unit coils obtained by winding wire conductors at regular intervals into concentric winding forms are used to obtain n coils in each of which the q unit coils wound in a same direction are connected so as to be shifted from each other in the circumferential direction, and the stator winding is composed of two coil groups each obtained by joining the n/2 coils together. The two coil groups are connected in parallel to each other between power feed portions and neutral points, and two coils that are connected to the power feed portions are disposed so as to share the slot.
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公开(公告)号：US11569700B2
公开(公告)日：2023-01-31
申请号：US17082541
申请日：2020-10-28
Applicant: Mitsubishi Electric Corporation
Inventor： Tatsuro Hino , Kohei Egashira , Shinya Matsunaga , Yasuhiro Hayasaka , Norihiro Murata , Kazuya Hasegawa , Katsuya Ito
Abstract: To obtain a rotating electric machine capable of downsizing the rotating electric machine in an axial direction and in a radial direction. A first inner-peripheral-side terminal includes a first conductor-exposed portion and a second inner-peripheral-side terminal includes a second conductor-exposed portion opposed to the first conductor-exposed portion. An opposing portion being a portion, at which the first conductor-exposed portion and the second conductor-exposed portion are opposed to each other, extends in a radial direction, and at least a part of the opposing portion of the first conductor-exposed portion and the second conductor-exposed portion is arranged on an inner side in the radial direction compared to the first outer-peripheral-side terminal and the second outer-peripheral-side terminal.
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公开(公告)号：US20210175758A1
公开(公告)日：2021-06-10
申请号：US17073502
申请日：2020-10-19
Applicant: Mitsubishi Electric Corporation
Inventor： Naohiko Ayukawa , Tatsuro Hino , Kohei Egashira , Kazuya Hasegawa , Yasuhiro Hayasaka , Kenji Maekawa
Abstract: An annular stator core in which, out of slots arrayed in a circumferential direction and extending in a radial direction, q slots are formed per pole and per phase; and stator windings, for respective phases, attached to the stator core. For each stator winding, q*n unit coils obtained by winding wire conductors at regular intervals into concentric winding forms are used to obtain n coils in each of which the q unit coils wound in a same direction are connected so as to be shifted from each other in the circumferential direction, and the stator winding is composed of two coil groups each obtained by joining the n/2 coils together. The two coil groups are connected in parallel to each other between power feed portions and neutral points, and two coils that are connected to the power feed portions are disposed so as to share the slot.
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公开(公告)号：US12165788B2
公开(公告)日：2024-12-10
申请号：US17082751
申请日：2020-10-28
Applicant: Mitsubishi Electric Corporation
Inventor： Shiori Natori , Naoki Yasuda , Kazuya Hasegawa , Kenji Maekawa , Yasuhiro Hayasaka
Abstract: In the insulation sheet, an insulation resin layer made of a thermosetting resin composition in an uncured or semi-cured state is formed on one or each of both surfaces of the base material. The thermosetting resin composition contains: a thermosetting resin (A) that is in solid form at 25° C.; a thermosetting resin (B) that is in liquid form at 25° C.; a latent curing agent that is unreactive at 60° C. or lower; and an inorganic filler having a maximum particle diameter smaller than a film thickness of the insulation resin layer and having an average particle diameter smaller than 0.5 times the film thickness. The insulation resin layer of the insulation sheet is efficiently compressed into a predetermined thickness by pressure application at normal temperature and permeates a gap between a stator core and a stator coil by heating during curing treatment, whereby both members can be insulated and fixed.
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