Permanent magnet type rotating electrical machine

Details Permanent magnet type rotating electrical machine Permanent magnet type rotating electrical machine

2008-09-16

2008-09-16

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156530, C310S156540, C310S156560

Reexamination Certificate

active

11289425

ABSTRACT:
A permanent magnet type rotating electrical machine that is capable of producing a higher output and is suitable for high-speed rotation. A pair of nonmagnetic portions are formed in a rotor core at opposite ends of each pole. The waveform of induced voltage and a motor voltage are adjusted based on two parameters, i.e., an angle covering minimum magnetic path portions formed by the nonmagnetic portions and a magnet width. Assuming that a circumferential pitch of teeth cores with respect to a rotor axis is τs (degree) and an opening angle contained by a circumferential width between radial width minimum points of the pair of magnetic path portions with respect to the rotor axis is θ (degree), θ≈(n+Y)×τs (n: integer larger than 0) is met. Y=0.5 is set when the stator windings are wound in a distributed winding way, and Y=0.9-1.2 is set when they are wound in a concentrated winding way. The magnet forming one pole is divided into two parts, and a bridge portion is formed between the two divided magnet parts.

REFERENCES:
patent: 4795936 (1989-01-01), Crosetto et al.
patent: 5159220 (1992-10-01), Kliman
patent: 6121706 (2000-09-01), Nashiki et al.
patent: 6208054 (2001-03-01), Tajima et al.
patent: 6359359 (2002-03-01), Miura et al.
patent: 6486581 (2002-11-01), Miyashita et al.
patent: 6703744 (2004-03-01), Yoshinaga et al.
patent: 7105971 (2006-09-01), Asai et al.
patent: 7233090 (2007-06-01), Evans et al.
patent: 2003/0094875 (2003-05-01), Sakuma et al.
patent: 2004/0017123 (2004-01-01), Miyashita et al.
patent: 2004/0145263 (2004-07-01), Kojima et al.
patent: 2005/0168089 (2005-08-01), Miyashita et al.
patent: 0 901 214 (1999-03-01), None
patent: 0 930 691 (1999-07-01), None
patent: 1 067 656 (2001-01-01), None
patent: 1 139 548 (2001-10-01), None
patent: 1 298 773 (2003-04-01), None
patent: 1 363 381 (2003-11-01), None
patent: 1 569 320 (2005-08-01), None
patent: U 7-11859 (1995-02-01), None
patent: 08-256440 (1996-10-01), None
patent: A 10-126985 (1998-05-01), None
patent: 2000-270503 (2000-09-01), None
patent: A 2001-112202 (2001-04-01), None
patent: A 2002-78260 (2002-03-01), None
patent: 2002-354726 (2002-12-01), None
patent: A 2002-354726 (2002-12-01), None
patent: B2 3598887 (2004-09-01), None
patent: A 2005-6484 (2005-01-01), None
patent: WO 03/081748 (2003-10-01), None
European Search Report dated Jul. 11, 2006 (Twenty-two (22) pages).
European Search Report (Six (6) pages) dated Apr. 5, 2006.

Affiliated with

Also associated with

Rating

Permanent magnet type rotating electrical 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 Permanent magnet type rotating electrical machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet type rotating electrical machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3955257