PHASE RING SUPPORT STRUCTURE AND ROTATING ELECTRIC MACHINE

WIPO Patent Application WO/2022/239219

A1

The present invention improves, as compared with a conventional insulation construction to ground, a long-term reliability with a phase ring (1) for connecting the armature windings of a rotating electric machine at a stator end portion and a structure in which a metal support structure (2) is disposed on the phase ring outer diameter side and an insulator (3) for ensuring an insulation distance to ground is inserted between the phase ring (1) and the metal support structure (2). The phase ring (1) and the metal support structure (2) are also constructed with an insulation thickness less than or equal to a thickness necessary for insulation to ground by ensuring the insulation distance to ground by the insulator (3), thereby enabling to improve the cooling performance of the phase ring (1) and the metal support structure (2). In addition, the occurrence of induction current occurring in the metal support structure (2) is suppressed, and a simple fastening structure such as, for example, a metal bolt (4) is applicable to a stator frame (5).

JPH09163642	FLAT TYPE MOTOR AND MANUFACTURE OF ITS STATOR
WO/2020/195125	ROTATING ELECTRICAL MACHINE AND STATOR THEREOF
JPWO2011102150	Armature for rotary electric machine

YAMASHITA WATARU (JP)
OKUDA TATSUYA (JP)

PCT/JP2021/018341

November 17, 2022

May 14, 2021

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MITSUBISHI ELECTRIC CORP (JP)

H02K3/04; H02K3/34; H02K3/50; H02K15/10

JP2002010559A	2002-01-11
JP2003250234A	2003-09-05
JPH036078U	1991-01-22
JPH04340344A	1992-11-26
US20120194016A1	2012-08-02
CN201726261U	2011-01-26
US20070188030A1	2007-08-16
CN205647096U	2016-10-12
JPS6218942A	1987-01-27

PALMO PATENT FIRM, P.C. (JP)

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