Title:
電気機械用のロータ・ステータ構造
Document Type and Number:
Japanese Patent JP4312245
Kind Code:
B2
Abstract:
A rotor-stator structure for electrodynamic machinery is disclosed to, among other things, minimize magnetic flux path lengths and to eliminate back-iron for increasing torque and/or efficiency per unit size (or unit weight) and for reducing manufacturing costs. In one embodiment, an exemplary rotor-stator structure can comprise a shaft defining an axis of rotation, and a rotor on which at least two substantially conical magnets are mounted on the shaft. The magnets include conical magnetic surfaces facing each other and confronting air gaps. In some embodiments, substantially straight field pole members can be arranged coaxially and have flux interaction surfaces formed at both ends of those field poles. Those surfaces are located adjacent to the confronting conical magnetic surfaces to define functioning air gaps. Current in coils wound on the field poles provide selectable magnetic fields that interact with magnet flux in flux interaction regions to provide torque to the shaft.
Inventors:
Petro, john, patrick
Wasson, Ken, George
Wasson, Ken, George
Application Number:
JP2007500845A
Publication Date:
August 12, 2009
Filing Date:
October 24, 2005
Export Citation:
Assignee:
Nova Talk Inc.
International Classes:
H02K1/06; H02K1/14; H02K1/22; H02K21/16
Domestic Patent References:
| JP2000166131A | ||||
| JP63171145A | ||||
| JP51018806A | ||||
| JP6511132A |
Attorney, Agent or Firm:
Yuichi Yamada
Masakazu Noda
Masakazu Noda