AC generator with annular permanent magnets

Details AC generator with annular permanent magnets AC generator with annular permanent magnets

1991-02-22

1992-07-21

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 63, 310181, H02K 906, H02K 1922

Patent

active

051325810

ABSTRACT:
In an AC generator having a plurality of claw-shaped magnetic pole portions in a rotor, a pair of projected portions which extend toward an outer circumference from both ends of boss portions on an outer circumference of a shaft are provided, and permanent magnets are also provided so as to abut against the projected portions so that magnetic flux is applied in the same direction as the magnetic flux applied to the projected portions when an electric current is applied to a field winding which is wound around the boss portions. With a magnetic path thus constructed, it is possible that the magnetic flux if permanent magnets is put on the magnetic flux produced by a field winding, thus applying much magnetic flux to the stator. As a result, the output per weight can be increased.

REFERENCES:
patent: 4388545 (1983-06-01), Honsinger et al.
patent: 4451749 (1984-05-01), Kanazama et al.
patent: 4459501 (1984-07-01), Fawzy
patent: 4656551 (1987-03-01), Farr
patent: 4659950 (1987-04-01), Gotoh
patent: 4794285 (1988-12-01), Nimura et al.
patent: 4882515 (1989-11-01), Radomski
patent: 5046150 (1991-09-01), Rom et al.

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