Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1996-07-11
1998-12-29
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310162, 310179, H02K 112, H02K 2112, H02K 2114, H02K 2116
Patent
active
058545263
ABSTRACT:
A three-phase permanent-magnet electric rotating machine having necessary performance which can be realized easily at a low cost, wherein a stator includes a stator iron core having a disc portion and 3n magnetic poles formed so as to be erected at right angles from an outer circumference of the disc portion, and excitation windings mounted on the magnetic poles so as to have a predetermined width in the axial direction, and wherein a rotor is constituted by permanent magnets magnetized into N and S poles arranged alternately in the direction of rotation of the rotor and the rotor is supported so as to face the top ends of the respective magnetic poles of the stator through a predetermined air gap. In this case, the number n is an integer not smaller than 1. Alternatively, n may be selected to be an even number not smaller than 2 so that the excitation windings may be mounted on every other one of the magnetic poles. Preferably, a plurality of magnetic teeth of a predetermined shape may be formed on each of the top end portions of the magnetic poles formed in the stator iron core. Further preferably, excitation windings are mounted on first and second stator iron cores which are doubly arranged so as to be concentric with each other to thereby form a stator provided with a double structure of the magnetic poles.
REFERENCES:
patent: 2484001 (1949-10-01), Raymond
patent: 2518756 (1950-08-01), Cochran
patent: 3226584 (1965-12-01), Pintell
patent: 3952219 (1976-04-01), Mitsui et al.
patent: 4029980 (1977-06-01), Gamble et al.
patent: 4051401 (1977-09-01), Hayward
patent: 4206374 (1980-06-01), Goddijn
patent: 4347457 (1982-08-01), Sakamoto
patent: 4384226 (1983-05-01), Sato et al.
patent: 4503368 (1985-03-01), Sakamoto
patent: 4620120 (1986-10-01), Laing
patent: 4672253 (1987-06-01), Tajima et al.
patent: 4675564 (1987-06-01), Isozaki
patent: 4764697 (1988-08-01), Christiaens
patent: 4764698 (1988-08-01), Murakami
patent: 4949000 (1990-08-01), Petersen
patent: 4983867 (1991-01-01), Sakamoto
patent: 4999559 (1991-03-01), Katz
patent: 5032747 (1991-07-01), Sakamoto
patent: 5128570 (1992-07-01), Isozaki
patent: 5243246 (1993-09-01), Sakamoto
patent: 5289064 (1994-02-01), Sakamoto
patent: 5298825 (1994-03-01), Oudet et al.
patent: 5386161 (1995-01-01), Sakamoto
patent: 5410200 (1995-04-01), Sakamoto et al.
Japan Servo Co. Ltd.
LaBalle Clayton
LandOfFree
Three-phase permanent-magnet electric rotating machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-phase permanent-magnet electric rotating machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-phase permanent-magnet electric rotating machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1426862