Canadian Patents Database

Patent Summary

(12) Patent Application:	(11) CA 2774303
(54) English Title:	MAGNET SHAPING IN PERMANENT MAGNET SYNCHRONOUS MACHINES
(54) French Title:	FORMAGE D'AIMANTS DANS UNE MACHINE SYNCHRONE A AIMANTS PERMANENTS

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Representative Drawing

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Abstracts

English Abstract

A permanent magnet synchronous machine comprises a stator, a rotor
and a plurality of permanent magnets mounted to the rotor. Each magnet has a
shaped body characterized by an arcuate radially outer surface, a flat inner
surface,
a first side surface facing an opposite pole, and a second side surface facing
a like
pole, wherein the first side surface and the flat inner surface subtend an
angle .delta.1
that is greater than 90 degrees and wherein the second side surface and the
flat
inner surface subtend an angle .delta.2 that is also greater than 90 degrees.
The
permanent magnet synchronous machine may be used in a flywheel energy storage
system or in other electromechanical systems.

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Patent Details

(51) International Patent Classification (IPC):	H01F 7/02 (2006.01) F03G 3/08 (2006.01) H02K 1/17 (2006.01) H02K 1/27 (2006.01) H02K 21/02 (2006.01)
(72) Inventors (Country):	WILKINS, MATTHEW M. (Canada) MCARTHUR, JOHNATHON G. R. (Canada)
(73) Owners (Country):	FLYWHEEL ENERGY SYSTEMS INC. (Canada)
(71) Applicants (Country):	FLYWHEEL ENERGY SYSTEMS INC. (Canada)
(74) Agent:	GOWLING LAFLEUR HENDERSON LLP
(45) Issued:
(22) Filed Date:	2012-04-19
(41) Open to Public Inspection:	2012-06-26
Examination requested:	2012-04-19
(30) Availability of licence:	N/A
(30) Language of filing:	English

Patent Cooperation Treaty (PCT):	No

(30) Application Priority Data:	None

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View Patent Image	Download Patent Image in PDF Format	Size of Image (KB)	Number of Pages
Cover Page	Cover Page	37	1
Abstract	Abstract	17	1
Claims	Claims	146	5
Description	Description	435	10
Drawings	Drawings	131	4
Representative Drawing	Representative Drawing	7	1

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