Title:
PERMANENT MAGNET FIELD SYSTEM SYNCHRONOUS MACHINE
Document Type and Number:
Japanese Patent JP3791080
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a permanent magnet field system synchronous machine at low cost which delivers high peak thrust and achieves a fine pitch of movement.
SOLUTION: In the plurality of the teeth trains 11, 12 of a stator 1, the teeth 11a, 12a are formed with an equal pitch P with grooves 12b in-between. The plurality of the teeth trains 11, 12 are shifted from their adjacent teeth trains by 0.5P in the direction of movement. A mover 2 comprises m pieces of electromagnets of the same structure the centers of which are apart from one another by a phase difference of ⊕180/m° in electrical angle in the direction of movement. Each of the electromagnets consists of a plurality of C-shaped cores in the same shape, permanent magnets 61-64 and a non-magnetic intermediate material 13 inserted into between the plurality of the C-shaped cores, and a coil 41. Teeth are formed on the magnetic poles of the plurality of the C-shaped cores with a pitch of 0.5P in the direction of movement with grooves in-between. The permanent magnets 61-64 are magnetized in the lateral direction with a pitch of 0.5P so that their orientation will be alternated in the direction of movement. The permanent magnets 61-64 are arranged, so that the polarity occurring on the teeth of the magnetic poles of the C-shaped cores will be opposite to the polarity occurring on the teeth of the magnetic poles of the adjacent cores.
More Like This:
| JP2001258206 | ACTUATOR WITH TWO-DEGREE OF FREEDOM |
Inventors:
Toru Kayama
Noriaki Iwabuchi
Noriaki Iwabuchi
Application Number:
JP33763996A
Publication Date:
June 28, 2006
Filing Date:
December 02, 1996
Export Citation:
Assignee:
Yaskawa Electric Co., Ltd.
International Classes:
H02K37/04; H02K41/03; (IPC1-7): H02K41/03; H02K37/04
Domestic Patent References:
| JP3139159A | ||||
| JP4108380U | ||||
| JP7241063A | ||||
| JP8275485A |