Title:
BRUSHLESS PERMANENT MAGNET MOTOR WITH HIGH POWER DENSITY, LOW COGGING AND LOW VIBRATION
Document Type and Number:
WIPO Patent Application WO2005043723
Kind Code:
B1
Abstract:
A brushless permanent magnet electric machine includes a stator assembly having a stator core that defines (12 x n) slots and stator teeth having a generally "T"-shaped cross section. Winding wire is wound around the stator teeth, wherein a radially outer edge of the stator teeth define a crowned surface. A rotor includes permanent magnets defining (12 ± 2)n poles, wherein n is an integer greater than zero.
Inventors:
CRAPO ALAN D (US)
HORST GARY E (US)
HORST GARY E (US)
Application Number:
PCT/US2004/032079
Publication Date:
July 21, 2005
Filing Date:
October 01, 2004
Export Citation:
Assignee:
EMERSON ELECTRIC CO (US)
CRAPO ALAN D (US)
HORST GARY E (US)
CRAPO ALAN D (US)
HORST GARY E (US)
International Classes:
D06F37/30; G11B19/20; H02K1/16; H02K21/22; H02K29/03; H02K1/08; (IPC1-7): H02K29/03; H02K1/14; H02K1/27; H02K21/22
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