ELECTRIC MOTOR AND WIND POWER GENERATION UNIT

WIPO Patent Application WO/2020/048073

A1

An electric motor (100), comprising an active cooling loop (A) and a passive cooling loop (B) that are isolated from each other and are both in communication with the external environment, wherein the active cooling loop comprises chambers (11a, 11b) located at two axial ends of the electric motor and in communication with each other, an air gap (12) between a rotor (10) and a stator (20) of the electric motor, and radial channels (13) distributed at intervals along the axial direction of the stator (20), and the active cooling loop (A) is provided with a cooling device (14) in communication with the external environment; and the passive cooling loop (B) comprises an axial channel passing through the stator (20) in the axial direction and an outer surface of the electric motor (100). Further comprised is a wind power generation unit provided with the electric motor. By means of the electric motor, the problem of insufficient cooling capability of a passive cooling loop in a limited layout space is solved, the burden on the active cooling loop is relieved, the power and self-consumption of a cooling device are reduced, and thus the volume and weight of the cooling device are reduced and the power generation efficiency of the whole machine is improved.

LI JINHUI (CN)
LIU JUNWEI (CN)
XU WENHUA (CN)

PCT/CN2019/070442

March 12, 2020

January 04, 2019

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XINJIANG GOLDWIND SCIENCE & TECH CO LTD (CN)

F03D80/60; H02K9/02; H02K9/04

CN101473514A	2009-07-01
CN103280903A	2013-09-04
CN102738913A	2012-10-17
CN101728901A	2010-06-09
EP3236065A1	2017-10-25
CN102265487A	2011-11-30
CN102725945A	2012-10-10

See also references of EP 3819497A4

BEIJING EAST IP LTD. (CN)

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