Mitsubishi Electric Corporation

Yasuhiro Hayasaka

Kazuya Hasegawa

Tatsuro Hino

Kohei Egashira

Kenji Maekawa

Masaya Inoue

Masashi Nakamura

Akihiro Yamamura

Shogo Okamoto

Naoki Yasuda

Yoshiaki Kitta

Norihiro Murata

Katsuya Ito

Shiori Natori

Naohiko Ayukawa

Sho Nakano

Shinya Matsunaga

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.

Insulation sheet and producing method therefor, and rotary electric machine

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.

Rotary electric machine

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.

Rotating electric machine

A stator includes multiple bus bars formed in an annular shape and laminated in a radial direction and an insulation member covering both radial side surfaces and both axial end faces of each bus bar, and the insulation member contains a sheet-like insulation member covering both radial side surfaces and the axial end face of each bus bar.

Rotating electrical machine equipped with a stator having a bus bar wrapped with insulation sheet/layers

Growing community of inventors

Tokyo, Japan

Yasuhiro Hayasaka